Sarnissa-french-aquaculture November 2016

sarnissa-french-aquaculture@lists.stir.ac.uk

4 participants
8 discussions

Problèmes de taux de survie des juvéniles de Clarias dans l'écloserie ....

by William Leschen

Bonjour Utilisez Gemna 0.1 mm de Skretting ou Essence 0.2 mm- 0.3 mm de COPPENS. J'obtiens de très bons résultats et je produit 150 000 à 200 000 alevins toutes les 2 semaines avec deux femelles. Artemia causer une mortalité élevée que vous avez dit quelque chose de mal sur la formule. Je l'ai laissé depuis 2 ans pour cette 2 fois de nourriture sèche mentionnée. Merci BADIANE Abdoul Aziz Spécialiste en aquaculture / Consultant Conception et installation de l'écloserie RAS et croissance Formation des techniciens dans tous les aspects de la pisciculture Employeurs: FAO, FIDA, gouvernements et secteur privé Zone cible: Afrique Sénégal Mobil: (+221) 77 670 13 89 Skype: badianeab BADIANE Abdoul Aziz Aquaculture Specialist /Consultant Design and installation of RAS hatchery and grow out Training technicians in all aspect of fish farm Employers: FAO, IFAD, Governments and private sector Target area: Africa Senegal Mobil : (+221) 77 670 13 89 Skype: badianeab From: BADIANE ABDOUL [mailto:badianeabdoul@yahoo.fr] Sent: 20 November 2016 18:34 To: Babatunde Oreyemi <oreyemibabs(a)gmail.com>; AHOCOU Alexandre K <alexahocou(a)gmail.com> Cc: sarnissa-african-aquaculture Mailing List <sarnissa-african-aquaculture(a)lists.stir.ac.uk>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk> Subject: Re: FW: Problems with survival rates of Clarias juveniles in the hatchery .... Hello Use Gemna 0.1 mm of Skretting or Essence 0.2 mm- 0.3 mm from COPPENS. I get very good results and produce 150 000-200 000 fries every 2 weeks with two females. Artemia cause high mortality as you told something wrong on the formula. I left it since 2 years for this 2 time of dry feed mentioned. Thanks BADIANE Abdoul Aziz Aquaculture Specialist /Consultant Design and installation of RAS hatchery and grow out Training technicians in all aspect of fish farm Employers: FAO, IFAD, Governments and private sector Target area: Africa Senegal Mobil : (+221) 77 670 13 89 Skype: badianeab Please consider the environment before printing this e-mail. ________________________________ De : Babatunde Oreyemi via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>> À : AHOCOU Alexandre K <alexahocou(a)gmail.com<mailto:alexahocou@gmail.com>> Cc : sarnissa-african-aquaculture Mailing List <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-french-aquaculture@lists.stir.ac.uk>> Envoyé le : Dimanche 20 novembre 2016 15h52 Objet : Re: FW: Problems with survival rates of Clarias juveniles in the hatchery .... Hello Neil, Sorry for the lateness of my reply. Kindly Google 'inve artemia' u ll be shown the product and the producer. For years hatcheries around depend on this product for the fries feed. I guess they changed something in the formula which is now making the fries to die once they start feeling on it. I wouldn't mind if i can have access to what u use over there and be able to produce my own artemia. The best we do now is get 0.5-0.8mm of feeds meant for fingerlings. Grind to powder and feed the fries. Tunde On 10 Nov 2016 10:08, "AHOCOU Alexandre K" <alexahocou(a)gmail.com<mailto:alexahocou@gmail.com>> wrote: 2016-11-09 14:49 UTC, Babatunde Oreyemi via Sarnissa-african-aquaculture <sarnissa-african-aquaculture@ lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: > Neil, > The type we use here required you apply the quantity the fries can eat into > the water and the fries will feed on it. (inve type) > > Tunde > On 9 Nov 2016 10:37, "William Leschen via Sarnissa-african-aquaculture" < > sarnissa-african-aquaculture@ lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>> wrote: > > In English below > > > > > > Bonjour à tous, > > Nous avons eu le même problème des faibles taux de survie des juvéniles de > poisson-chat africain Djo provient principalement de cannibalisme, mais a > réussi à surmonter ce problème par quatre procédures: > 1. Le classement des alevins chaque 8-10 jours (pas moins et pas plus). > 2. Dépôt direct alimentaires (rotifères) pour la nouvelle alevins hachurée. > 3. Construire petite brique plus approprié pour le poisson-chat de > fingerlings de réservoirs d'élevage les hapas de charbon net. > (Et la quatrième procédure était de réduire l'agressivité des géniteurs, si > vous n'appréhendé à partir de ce problème, vous pouvez l'éliminer) > Les mâles et les femelles 4. Injecter avec ovaprim ® réduit l'agressivité > et nombre accru mà d'œufs. > > > Meilleures salutations, > Nabil > >> <>> <>> <> <> <<> <<> < > Dr. Nabil A. Ibrahim, > Scientifique, Aquaculture durable (Genetics) > T: + 2055-3404227, Abbassa, Abou Hammad, Sharkia, Egypte GMT + 2 > - 3405579 (Ext 222.) > M: + 2010-20043128, PO Box 1261 Maadi, Le Caire, Egypte-11728- > Skype: nabibr1 > F: + 20 55 3405578 www.worldfishcenter.org<http://www.worldfishcenter.org/> > > > > *From:* Ibrahim, Nabil Ahmed (WorldFish) [mailto:N.Ibrahim@cgiar.org<mailto:N.Ibrahim@cgiar.org>] > *Sent:* 08 November 2016 13:34 > > *To:* William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>>; > sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture@ > lists.stir.ac.uk<http://lists.stir.ac.uk/>> > *Subject:* RE: Problems with survival rates of Clarias juveniles in the > hatchery .... > > > > Dear All, > > > > We had the same problem of low survival rates of juveniles of African > catfish which mainly came from cannibalism, but we managed to overcome this > problem through the following four procedures: > > 1. Grading the fry each 8 – 10 days (not less and not more). > > 2. Introduced live food (rotifers) for the new hatched fry. > > 3. Built small brick tanks which is more suitable for rearing the > catfish fingerlings than net hapas. > > (And the fourth procedure was to reduce the aggressiveness of the > broodstock, if you don’t suffering from this problem you can eliminate it) > > 4. Inject both males and females with ovaprim ® which reduced the > aggressiveness and increased egg numbers. > > > > Hope to find it useful. > > > > Best regards, > > Nabil > > > >><> ><> ><> <>< <>< <>< > *Dr. Nabil A. Ibrahim,* > Scientist, Sustainable Aquaculture (Genetics) > > T: + 2055-3404227, Abbassa, Abou Hammad, Sharkia, Egypt GMT+2 > > - 3405579 (Ext. 222) > > M:+2010-20043128, PO Box 1261 Maadi, Cairo-11728- > Egypt > > Skype: nabibr1 > > F: + 20 55 3405578 *www.worldfishcenter.org<http://www.worldfishcenter.org/> > <http://www.worldfishcenter. org/<http://www.worldfishcenter.org/>>* > > > > [image: Description: cid:image001.gif@01D09B90. 3ED24D30] > <http://www.worldfishcenter. org/<http://www.worldfishcenter.org/>> > > [image: Description: cid:image002.gif@01D09B90. 3ED24D30] > > [image: Description: cid:image003.gif@01D09B90. 3ED24D30] > > [image: Description: cid:image004.gif@01D09B90. 3ED24D30] > <https://www.facebook.com/ worldfishcenter<https://www.facebook.com/worldfishcenter>> > > [image: Description: cid:image005.gif@01D09B90. 3ED24D30] > <https://plus.google.com/b/ 102211402723514246103/ 102211402723514246103<https://plus.google.com/b/102211402723514246103/102211402723514246103>> > > [image: Description: cid:image006.gif@01D09B90. 3ED24D30] > <https://twitter.com/#%21/ worldfishcenter<https://twitter.com/#%21/worldfishcenter>> > > [image: Description: cid:image007.gif@01D09B90. 3ED24D30] > <http://www.worldfishcenter. org/sites/default/files/email- signature/www.youtube.com/ theworldfishcenter<http://www.worldfishcenter.org/sites/default/files/email-signature/www.yout…>> > > [image: Description: cid:image008.gif@01D09B90. 3ED24D30] > <http://www.flickr.com/photos/ theworldfishcenter/<http://www.flickr.com/photos/theworldfishcenter/>> > > [image: Description: cid:image009.gif@01D09B90. 3ED24D30] > <http://www.worldfishcenter. org/rss-feeds<http://www.worldfishcenter.org/rss-feeds>> > > > > > > > > *From:* Sarnissa-african-aquaculture [mailto:sarnissa-african-<mailto:sarnissa-african-> > aquaculture-bounces@lists. stir.ac.uk<mailto:aquaculture-bounces@lists.stir.ac.uk> > <sarnissa-african-aquaculture- bounces(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk>>] *On Behalf Of > *William > Leschen via Sarnissa-african-aquaculture > *Sent:* Tuesday, November 08, 2016 11:37 AM > > *To:* sarnissa-african-aquaculture Mailing List; > sarnissa-french-aquaculture Mailing List > *Subject:* FW: Problems with survival rates of Clarias juveniles in the > hatchery .... > > > > Traduire en francais au dessus > > > > *From:* Leslie [mailto:leslie@aquaafrica.co. za<mailto:leslie@aquaafrica.co.za> <leslie(a)aquaafrica.co.za<mailto:leslie@aquaafrica.co.za>>] > *Sent:* 08 November 2016 03:42 > *To:* William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>>; > sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture@ > lists.stir.ac.uk<http://lists.stir.ac.uk/>> > *Subject:* RE: Problems with survival rates of Clarias juveniles in the > hatchery .... > > > > Good morning Koba > > > > With clients and on our own R&D facility we have put enormous effort into > perfecting the survival and growth rate of African catfish over the past > years. I can tell you that there are several factors that are key to > obtaining this, including optimising both water quality & feed, but even so > a 50% survival is not realistic. If you get a 20% survival from egg to 1kg > you are doing well. > > > > Regards, > > Leslie > > > > Bonjour Koba > > Avec nos clients et notre propre centre de R & D, nous avons déployé des > efforts considérables pour améliorer le taux de survie et de croissance du > poisson-chat africain au cours des dernières années. Je peux vous dire > qu'il ya plusieurs facteurs qui sont essentiels à l'obtention de ce, y > compris l'optimisation de la qualité de l'eau et de l'alimentation, mais > même si une survie de 50% n'est pas réaliste. Si vous obtenez une survie de > 20% de l'œuf à 1kg vous faites bien. > > Cordialement, > Leslie > > > > [image: AI email signature] <http://www.aquaafrica.co.za/> > > > > *From:* Sarnissa-african-aquaculture [mailto:sarnissa-african-<mailto:sarnissa-african-> > aquaculture-bounces@lists. stir.ac.uk<mailto:aquaculture-bounces@lists.stir.ac.uk> > <sarnissa-african-aquaculture- bounces(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk>>] *On Behalf Of > *William > Leschen via Sarnissa-african-aquaculture > *Sent:* 07 November 2016 05:10 PM > *To:* sarnissa-african-aquaculture Mailing List; > sarnissa-french-aquaculture Mailing List > *Subject:* Problems with survival rates of Clarias juveniles in the > hatchery .... > > > > English translation below > > > > *From:* AHOCOU Alexandre K [mailto:alexahocou@gmail.com<mailto:alexahocou@gmail.com> > <alexahocou(a)gmail.com<mailto:alexahocou@gmail.com>>] > *Sent:* 07 November 2016 12:48 > *To:* William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>> > *Subject:* Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings > available for sale in Mowe ( close to market) The power of networks....... > > > > Bonjour à tous > > Juste savoir si quelqu'un peut me donner des infos sur comment faire pour > avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. > > En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour de > nourrissage à l'artémia décapsulé on observe une forte mortalité et pour > les jours suivants. Et pourtant on fait un bon siphonnage, l'eau (eau de > forage à ph =5.3) sur les larves est renouvelée au moins 2 fois dans la > journée après s'être oxigénée. > > J'ai à un moment donné pensé que la cause de la mortalité des alevins > pouvait être soit des virus, bactéries, levures ou champignons. Alors j'ai > fait installer un stérilisateur UV de 30 watt à travers lequel l'eau > transite avant d'atteindre les larves mais pas d'amélioration. > > Si quelqu'un a donc une expérience en la matière je serai très sensible à > sa bonne volonté de partage. > > Merci > > AHOCOU Koba > > alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> > > Tél : 90 22 15 83 > > > > 2016-11-07 10:23 GMT+00:00 William Leschen via Sarnissa-african-aquaculture > <sarnissa-african-aquaculture@ lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: > > > > Hello everyone > Just to know if anyone can give me information on how to get a survival > rate of at least 50% catfish fingerlings gariepinus. > Indeed, the hatching rate is good but already from the 3rd day of feeding > decapsulated Artemia there are high mortalities and for the following > days. And yet we also siphoned off water and replaced it (well water at > pH = 5.3) for the larvae repeating this at least 2 times a day after the > water had been well oxygenated. > At first I thought that the cause of the mortality of the fry could be > either virus, bacteria, yeast or fungi. So I installed a 30 watt UV > sterilizer through which the water passes before reaching the larvae but no > improvement. > So if anyone has experience in this area I will be very willing to hear > from you . > Thank you > Koba AHOCOU > alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 > > *Email and mobile phone whats app networks developing commercial > aquaculture in Nigeria * > > > > Dear all > > > > Please see below note how this simple yahoo email catfish farmers forum > in Nigeria now with hundreds of members all over the country are buying > and selling not just fingerlings and market fish but also inputs > feed fertilisers etc also for questions and advice There is also a > similar equally popular Nigerian catfish farmers mobile phone whats app > group which has daily messages on the same subjects and thus huge > networks of fish farmers communicating with each other on daily basis- > In the last weeks on the catfish farmers app they have been > discussing market process for their grow out fish and how they can > potentially state and then country wide try to control prices - as > their margins are ever declining due to the continually increasing prices > per tonne of commercial feed in the country…………………. > > > > Please note this for sarnissa fish farmers in other countries - > also for those involved in aquaculture development across SS Africa > both govts and also national and international donors and investors - > These email and mobile phone whats app networks cost next to nothing to > set up and normally just the time of a dedicated individual to run them > - And the impacts and concrete positive outcomes from them are huge …. > > > > Best wishes Will > > > > *Sustainable Aquaculture Research Group * > > *Institute of Aquaculture, University of Stirling UK * > > > > *www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> <http://www.aqua.stir.ac.uk/> * > > > > *Read about the Sustainable Aquaculture Research Group’s new projects and > activities at http://www.susaquastirling. net/<http://www.susaquastirling.net/> > <http://www.susaquastirling. net/<http://www.susaquastirling.net/>>* > > > > *Follow Daily updated Facebook sites (news, publications, videos, > employment, funding, investment and other) for:* > > > > *Inst of Aquaculture Stirling Scotland UK > <https://www.facebook.com/ pages/Institute-of- Aquaculture-Stirling-Scotland- UK/219303798156967?ref=hl<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Scotland-U…>> > * > > > > *SARNISSA African Aquaculture Network > <https://www.facebook.com/ sarnissaafrica?ref=hl<https://www.facebook.com/sarnissaafrica?ref=hl>> * > > > > *Aquaculture Enterprise Malawi > <https://www.facebook.com/ pages/Aquaculture-Enterprise- Malawi/572805602862378?fref=nf<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57280560286237…> >* > > > > *SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) > <https://www.facebook.com/ SEATGlobal?ref=hl<https://www.facebook.com/SEATGlobal?ref=hl>> * > > > > <http://www.aqua.stir.ac.uk/> > > > > > > *From:* catfishfarmersnig@yahoogroups. co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk> [mailto:catfishfarmersnig@<mailto:catfishfarmersnig@> > yahoogroups.co.uk<http://yahoogroups.co.uk/>] > *Sent:* 07 November 2016 09:03 > *To:* catfishfarmersnig <catfishfarmersnig@ yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>> > *Subject:* [catfishfarmersnig] 10,000 Catfish fingerlings available for > sale in Mowe ( close to market) > > > > > > Dear Farmers, > Good morning. > > We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for sale at > our farm site in mowe. > > Serious buyers should please call Okey on 09034871998 for pricing > information and pickup arrangements. > > Regards and God Bless, > OkeE > > sent from myMTN Sm@rtphone > > __._,_.___ > ------------------------------ > > Posted by: okenima_info <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> > ------------------------------ > > *Reply via web post > <https://uk.groups.yahoo.com/ neo/groups/catfishfarmersnig/ conversations/messages/7714;_ ylc= X3oDMTJxY3M2ZmIyBF9TAzk3NDkwNT A1BGdycElkAzE0MDU3NjExBGdycHNw SWQDMTY5MjM1NzUzNARtc2dJZAM3Nz E0BHNlYwNmdHIEc2xrA3JwbHkEc3Rp bWUDMTQ3ODUwOTQxMQ--?act= reply&messageNum=7714<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/mess…>> > * > > • > > Reply to sender > <MailScanner has detected a possible fraud attempt from "okenima_info(a)yahoo.co.uk" claiming to be MailScanner has detected a possible fraud attempt from "okenima_info(a)yahoo.co.uk" claiming to be MailScanner has detected a possible fraud attempt from "okenima_info(a)yahoo.co.uk" claiming to be MailScanner has detected a possible fraud attempt from "okenima_info(a)yahoo.co.uk" claiming to be okenima_info(a)yahoo.co.uk? 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8 years, 1 month

[Dialoguebarrages] Manuel sur le consentement préalable, libre et éclairé

by KOUNDOUNO Jérôme

10 octobre 2016, Rome - Le droit des populations autochtones de donner ou non leur consentement à des projets de développement ayant une incidence sur leurs ressources naturelles et leurs modes de vie a pris de l'importance grâce à un nouveau manuel destiné à guider les acteurs du développement dans la conception et la mise en œuvre de ce type de projets. Le manuel sur le Consentement préalable, libre et éclairé (FPIC)<http://www.fao.org/3/a-i6190e.pdf> présente les différents moyens de s'assurer que les populations autochtones puissent donner ou non leur consentement aux interventions proposées sur leurs terres et territoires, et ceci sans contrainte, avant qu'une décision ne soit prise, et avec les informations nécessaires présentées de manière culturellement appropriée. Lire la suite : http://www.fao.org/news/story/fr/item/446031/icode/ Jérôme KOUNDOUNO Dialogue régional de la CEDEAO sur les grandes infrastructures hydrauliques en Afrique de l'Ouest (www.dialoguebarrages.net<http://dialoguebarrages.net/fr/>) Cette liste de diffusion a été créée en 2009 pour renforcer le partage d’information sur les barrages dans l'espace CEDEAO en appui au processus d’élaboration de la Directive sur les grandes infrastructures hydrauliques Pour partager un document, envoyer un message directement à Dialoguebarrages(a)lists.dialoguebarrages.net<mailto:Dialoguebarrages@lists.dialoguebarrages.net> Pour s'inscrire ou se désinscrire, contacter jerome.koundouno(a)iucn.org<mailto:jerome.koundouno@iucn.org> ECOWAS regional dialogue on large water infrastructure in West Africa (www.dialoguebarrages.net<http://dialoguebarrages.net/en/>) This list was created in 2009 to facilitate the sharing of information on dams in the ECOWAS zone and support the development process for the Directive on large water infrastructure To share any document, send it directly to Dialoguebarrages(a)lists.dialoguebarrages.net<mailto:Dialoguebarrages@lists.dialoguebarrages.net> To subscribe or unsubscribe, contact jerome.koundouno(a)iucn.org<mailto:jerome.koundouno@iucn.org> ________________________________ This communication, together with any attachment, may contain confidential information and/or copyright material and is intended only for the person(s) to whom it is addressed. If you are not the intended recipient of this communication, or if you received it in error, you are asked to kindly delete it and promptly notify us. Any review, copying, use, disclosure or distribution of any part of this communication, unless duly authorized by or on behalf of IUCN, is strictly forbidden. _______________________________________________ Dialoguebarrages mailing list Dialoguebarrages(a)lists.dialoguebarrages.net http://lists.dialoguebarrages.net/listinfo/dialoguebarrages

8 years, 1 month

FW: Problems with survival rates of Clarias juveniles in the hatchery ....

by William Leschen

In English below Bonjour à tous, Nous avons eu le même problème des faibles taux de survie des juvéniles de poisson-chat africain Djo provient principalement de cannibalisme, mais a réussi à surmonter ce problème par quatre procédures: 1. Le classement des alevins chaque 8-10 jours (pas moins et pas plus). 2. Dépôt direct alimentaires (rotifères) pour la nouvelle alevins hachurée. 3. Construire petite brique plus approprié pour le poisson-chat de fingerlings de réservoirs d'élevage les hapas de charbon net. (Et la quatrième procédure était de réduire l'agressivité des géniteurs, si vous n'appréhendé à partir de ce problème, vous pouvez l'éliminer) Les mâles et les femelles 4. Injecter avec ovaprim ® réduit l'agressivité et nombre accru mà d'œufs. Meilleures salutations, Nabil > <>> <>> <> <> <<> <<> < Dr. Nabil A. Ibrahim, Scientifique, Aquaculture durable (Genetics) T: + 2055-3404227, Abbassa, Abou Hammad, Sharkia, Egypte GMT + 2 - 3405579 (Ext 222.) M: + 2010-20043128, PO Box 1261 Maadi, Le Caire, Egypte-11728- Skype: nabibr1 F: + 20 55 3405578 www.worldfishcenter.org From: Ibrahim, Nabil Ahmed (WorldFish) [mailto:N.Ibrahim@cgiar.org] Sent: 08 November 2016 13:34 To: William Leschen <william.leschen(a)stir.ac.uk>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk> Subject: RE: Problems with survival rates of Clarias juveniles in the hatchery .... Dear All, We had the same problem of low survival rates of juveniles of African catfish which mainly came from cannibalism, but we managed to overcome this problem through the following four procedures: 1. Grading the fry each 8 – 10 days (not less and not more). 2. Introduced live food (rotifers) for the new hatched fry. 3. Built small brick tanks which is more suitable for rearing the catfish fingerlings than net hapas. (And the fourth procedure was to reduce the aggressiveness of the broodstock, if you don’t suffering from this problem you can eliminate it) 4. Inject both males and females with ovaprim ® which reduced the aggressiveness and increased egg numbers. Hope to find it useful. Best regards, Nabil ><> ><> ><> <>< <>< <>< Dr. Nabil A. Ibrahim, Scientist, Sustainable Aquaculture (Genetics) T: + 2055-3404227, Abbassa, Abou Hammad, Sharkia, Egypt GMT+2 - 3405579 (Ext. 222) M:+2010-20043128, PO Box 1261 Maadi, Cairo-11728- Egypt Skype: nabibr1 F: + 20 55 3405578 www.worldfishcenter.org<http://www.worldfishcenter.org/> [Description: cid:image001.gif@01D09B90.3ED24D30]<http://www.worldfishcenter.org/> [Description: cid:image002.gif@01D09B90.3ED24D30] [Description: cid:image003.gif@01D09B90.3ED24D30] [Description: cid:image004.gif@01D09B90.3ED24D30]<https://www.facebook.com/worldfishcenter> [Description: cid:image005.gif@01D09B90.3ED24D30]<https://plus.google.com/b/102211402723514246103/102211402723514246103> [Description: cid:image006.gif@01D09B90.3ED24D30]<https://twitter.com/#%21/worldfishcenter> [Description: cid:image007.gif@01D09B90.3ED24D30]<http://www.worldfishcenter.org/sites/default/files/email-signature/www.yout…> [Description: cid:image008.gif@01D09B90.3ED24D30]<http://www.flickr.com/photos/theworldfishcenter/> [Description: cid:image009.gif@01D09B90.3ED24D30]<http://www.worldfishcenter.org/rss-feeds> From: Sarnissa-african-aquaculture [mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk] On Behalf Of William Leschen via Sarnissa-african-aquaculture Sent: Tuesday, November 08, 2016 11:37 AM To: sarnissa-african-aquaculture Mailing List; sarnissa-french-aquaculture Mailing List Subject: FW: Problems with survival rates of Clarias juveniles in the hatchery .... Traduire en francais au dessus From: Leslie [mailto:leslie@aquaafrica.co.za] Sent: 08 November 2016 03:42 To: William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-french-aquaculture@lists.stir.ac.uk>> Subject: RE: Problems with survival rates of Clarias juveniles in the hatchery .... Good morning Koba With clients and on our own R&D facility we have put enormous effort into perfecting the survival and growth rate of African catfish over the past years. I can tell you that there are several factors that are key to obtaining this, including optimising both water quality & feed, but even so a 50% survival is not realistic. If you get a 20% survival from egg to 1kg you are doing well. Regards, Leslie Bonjour Koba Avec nos clients et notre propre centre de R & D, nous avons déployé des efforts considérables pour améliorer le taux de survie et de croissance du poisson-chat africain au cours des dernières années. Je peux vous dire qu'il ya plusieurs facteurs qui sont essentiels à l'obtention de ce, y compris l'optimisation de la qualité de l'eau et de l'alimentation, mais même si une survie de 50% n'est pas réaliste. Si vous obtenez une survie de 20% de l'œuf à 1kg vous faites bien. Cordialement, Leslie [AI email signature]<http://www.aquaafrica.co.za/> From: Sarnissa-african-aquaculture [mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk] On Behalf Of William Leschen via Sarnissa-african-aquaculture Sent: 07 November 2016 05:10 PM To: sarnissa-african-aquaculture Mailing List; sarnissa-french-aquaculture Mailing List Subject: Problems with survival rates of Clarias juveniles in the hatchery .... English translation below From: AHOCOU Alexandre K [mailto:alexahocou@gmail.com] Sent: 07 November 2016 12:48 To: William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>> Subject: Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings available for sale in Mowe ( close to market) The power of networks....... Bonjour à tous Juste savoir si quelqu'un peut me donner des infos sur comment faire pour avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour de nourrissage à l'artémia décapsulé on observe une forte mortalité et pour les jours suivants. Et pourtant on fait un bon siphonnage, l'eau (eau de forage à ph =5.3) sur les larves est renouvelée au moins 2 fois dans la journée après s'être oxigénée. J'ai à un moment donné pensé que la cause de la mortalité des alevins pouvait être soit des virus, bactéries, levures ou champignons. Alors j'ai fait installer un stérilisateur UV de 30 watt à travers lequel l'eau transite avant d'atteindre les larves mais pas d'amélioration. Si quelqu'un a donc une expérience en la matière je serai très sensible à sa bonne volonté de partage. Merci AHOCOU Koba alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tél : 90 22 15 83 2016-11-07 10:23 GMT+00:00 William Leschen via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: Hello everyone Just to know if anyone can give me information on how to get a survival rate of at least 50% catfish fingerlings gariepinus. Indeed, the hatching rate is good but already from the 3rd day of feeding decapsulated Artemia there are high mortalities and for the following days. And yet we also siphoned off water and replaced it (well water at pH = 5.3) for the larvae repeating this at least 2 times a day after the water had been well oxygenated. At first I thought that the cause of the mortality of the fry could be either virus, bacteria, yeast or fungi. So I installed a 30 watt UV sterilizer through which the water passes before reaching the larvae but no improvement. So if anyone has experience in this area I will be very willing to hear from you . Thank you Koba AHOCOU alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 Email and mobile phone whats app networks developing commercial aquaculture in Nigeria Dear all Please see below note how this simple yahoo email catfish farmers forum in Nigeria now with hundreds of members all over the country are buying and selling not just fingerlings and market fish but also inputs feed fertilisers etc also for questions and advice There is also a similar equally popular Nigerian catfish farmers mobile phone whats app group which has daily messages on the same subjects and thus huge networks of fish farmers communicating with each other on daily basis- In the last weeks on the catfish farmers app they have been discussing market process for their grow out fish and how they can potentially state and then country wide try to control prices - as their margins are ever declining due to the continually increasing prices per tonne of commercial feed in the country…………………. Please note this for sarnissa fish farmers in other countries - also for those involved in aquaculture development across SS Africa both govts and also national and international donors and investors - These email and mobile phone whats app networks cost next to nothing to set up and normally just the time of a dedicated individual to run them - And the impacts and concrete positive outcomes from them are huge …. Best wishes Will Sustainable Aquaculture Research Group Institute of Aquaculture, University of Stirling UK www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> Read about the Sustainable Aquaculture Research Group’s new projects and activities at http://www.susaquastirling.net/ Follow Daily updated Facebook sites (news, publications, videos, employment, funding, investment and other) for: Inst of Aquaculture Stirling Scotland UK<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Scotland-U…> SARNISSA African Aquaculture Network <https://www.facebook.com/sarnissaafrica?ref=hl> Aquaculture Enterprise Malawi<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57280560286237…> SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) <https://www.facebook.com/SEATGlobal?ref=hl> [cid:image002.jpg@01D239D3.409142B0]<http://www.aqua.stir.ac.uk/> [cid:image003.jpg@01D239D3.409142B0] From: catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk> [mailto:catfishfarmersnig@yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>] Sent: 07 November 2016 09:03 To: catfishfarmersnig <catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>> Subject: [catfishfarmersnig] 10,000 Catfish fingerlings available for sale in Mowe ( close to market) Dear Farmers, Good morning. We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for sale at our farm site in mowe. Serious buyers should please call Okey on 09034871998 for pricing information and pickup arrangements. Regards and God Bless, OkeE sent from myMTN Sm@rtphone __._,_.___ ________________________________ Posted by: okenima_info <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> ________________________________ Reply via web post<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/mess…> • Reply to sender <mailto:okenima_info@yahoo.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Reply to group <mailto:catfishfarmersnig@yahoogroups.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Start a new topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/newt…> • Messages in this topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/topi…> (1) Visit Your Group<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/info;_ylc=X3oDMTJm…> [Yahoo! Groups]<https://uk.groups.yahoo.com/neo;_ylc=X3oDMTJlamQ0aTBqBF9TAzk3NDkwNTAzBGdycE…> • Privacy<https://info.yahoo.com/privacy/uk/yahoo/groups/details.html> • Unsubscribe<mailto:catfishfarmersnig-unsubscribe@yahoogroups.co.uk?subject=Unsubscribe> • Terms of Use<https://info.yahoo.com/legal/uk/yahoo/utos/en-gb/details.html> . __,_._,___ No virus found in this message. Checked by AVG - www.avg.com<http://www.avg.com> Version: 2016.0.7859 / Virus Database: 4664/13362 - Release Date: 11/07/16

8 years, 1 month

FW: FW: Problems with survival rates of Clarias juveniles in the hatchery ....

by William Leschen

Bonjour, La plupart des éleveurs je sais obtiennent plus de 60% taux de survie des alevins. Ma suggestion personnelle est d'arrêter l'alimentation de la saumure de crevettes vous donner les alevins. Il peut tuer les alevins. Je vous conseille de rechercher des solutions de rechange. Tunde, Nigeria From: Babatunde Oreyemi [mailto:oreyemibabs@gmail.com] Sent: 08 November 2016 15:27 To: William Leschen <william.leschen(a)stir.ac.uk> Cc: sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk>; sarnissa-african-aquaculture Mailing List <sarnissa-african-aquaculture(a)lists.stir.ac.uk> Subject: Re: FW: Problems with survival rates of Clarias juveniles in the hatchery .... Hello, Most breeders around me do get over 60% rate of survival of the fingerings. My personal suggestion is stop the artemia feed you give the fries. It kills the fries. I ll suggest you look for alternatives. Tunde, Nigeria On 8 Nov 2016 10:43, "William Leschen via Sarnissa-african-aquaculture" <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>> wrote: Traduire en francais au dessus From: Leslie [mailto:leslie@aquaafrica.co.za<mailto:leslie@aquaafrica.co.za>] Sent: 08 November 2016 03:42 To: William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-french-aquaculture@lists.stir.ac.uk>> Subject: RE: Problems with survival rates of Clarias juveniles in the hatchery .... Good morning Koba With clients and on our own R&D facility we have put enormous effort into perfecting the survival and growth rate of African catfish over the past years. I can tell you that there are several factors that are key to obtaining this, including optimising both water quality & feed, but even so a 50% survival is not realistic. If you get a 20% survival from egg to 1kg you are doing well. Regards, Leslie Bonjour Koba Avec nos clients et notre propre centre de R & D, nous avons déployé des efforts considérables pour améliorer le taux de survie et de croissance du poisson-chat africain au cours des dernières années. Je peux vous dire qu'il ya plusieurs facteurs qui sont essentiels à l'obtention de ce, y compris l'optimisation de la qualité de l'eau et de l'alimentation, mais même si une survie de 50% n'est pas réaliste. Si vous obtenez une survie de 20% de l'œuf à 1kg vous faites bien. Cordialement, Leslie [AI email signature]<http://www.aquaafrica.co.za/> From: Sarnissa-african-aquaculture [mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk] On Behalf Of William Leschen via Sarnissa-african-aquaculture Sent: 07 November 2016 05:10 PM To: sarnissa-african-aquaculture Mailing List; sarnissa-french-aquaculture Mailing List Subject: Problems with survival rates of Clarias juveniles in the hatchery .... English translation below From: AHOCOU Alexandre K [mailto:alexahocou@gmail.com] Sent: 07 November 2016 12:48 To: William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>> Subject: Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings available for sale in Mowe ( close to market) The power of networks....... Bonjour à tous Juste savoir si quelqu'un peut me donner des infos sur comment faire pour avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour de nourrissage à l'artémia décapsulé on observe une forte mortalité et pour les jours suivants. Et pourtant on fait un bon siphonnage, l'eau (eau de forage à ph =5.3) sur les larves est renouvelée au moins 2 fois dans la journée après s'être oxigénée. J'ai à un moment donné pensé que la cause de la mortalité des alevins pouvait être soit des virus, bactéries, levures ou champignons. Alors j'ai fait installer un stérilisateur UV de 30 watt à travers lequel l'eau transite avant d'atteindre les larves mais pas d'amélioration. Si quelqu'un a donc une expérience en la matière je serai très sensible à sa bonne volonté de partage. Merci AHOCOU Koba alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tél : 90 22 15 83 2016-11-07 10:23 GMT+00:00 William Leschen via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: Hello everyone Just to know if anyone can give me information on how to get a survival rate of at least 50% catfish fingerlings gariepinus. Indeed, the hatching rate is good but already from the 3rd day of feeding decapsulated Artemia there are high mortalities and for the following days. And yet we also siphoned off water and replaced it (well water at pH = 5.3) for the larvae repeating this at least 2 times a day after the water had been well oxygenated. At first I thought that the cause of the mortality of the fry could be either virus, bacteria, yeast or fungi. So I installed a 30 watt UV sterilizer through which the water passes before reaching the larvae but no improvement. So if anyone has experience in this area I will be very willing to hear from you . Thank you Koba AHOCOU alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 Email and mobile phone whats app networks developing commercial aquaculture in Nigeria Dear all Please see below note how this simple yahoo email catfish farmers forum in Nigeria now with hundreds of members all over the country are buying and selling not just fingerlings and market fish but also inputs feed fertilisers etc also for questions and advice There is also a similar equally popular Nigerian catfish farmers mobile phone whats app group which has daily messages on the same subjects and thus huge networks of fish farmers communicating with each other on daily basis- In the last weeks on the catfish farmers app they have been discussing market process for their grow out fish and how they can potentially state and then country wide try to control prices - as their margins are ever declining due to the continually increasing prices per tonne of commercial feed in the country…………………. Please note this for sarnissa fish farmers in other countries - also for those involved in aquaculture development across SS Africa both govts and also national and international donors and investors - These email and mobile phone whats app networks cost next to nothing to set up and normally just the time of a dedicated individual to run them - And the impacts and concrete positive outcomes from them are huge …. Best wishes Will Sustainable Aquaculture Research Group Institute of Aquaculture, University of Stirling UK www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> Read about the Sustainable Aquaculture Research Group’s new projects and activities at http://www.susaquastirling.net/ Follow Daily updated Facebook sites (news, publications, videos, employment, funding, investment and other) for: Inst of Aquaculture Stirling Scotland UK<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Scotland-U…> SARNISSA African Aquaculture Network <https://www.facebook.com/sarnissaafrica?ref=hl> Aquaculture Enterprise Malawi<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57280560286237…> SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) <https://www.facebook.com/SEATGlobal?ref=hl> [cid:image002.jpg@01D23981.A73AD1E0]<http://www.aqua.stir.ac.uk/> [cid:image003.jpg@01D23981.A73AD1E0] From: catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk> [mailto:catfishfarmersnig@yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>] Sent: 07 November 2016 09:03 To: catfishfarmersnig <catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>> Subject: [catfishfarmersnig] 10,000 Catfish fingerlings available for sale in Mowe ( close to market) Dear Farmers, Good morning. We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for sale at our farm site in mowe. Serious buyers should please call Okey on 09034871998 for pricing information and pickup arrangements. Regards and God Bless, OkeE sent from myMTN Sm@rtphone __._,_.___ ________________________________ Posted by: okenima_info <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> ________________________________ Reply via web post<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/mess…> • Reply to sender <mailto:okenima_info@yahoo.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Reply to group <mailto:catfishfarmersnig@yahoogroups.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Start a new topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/newt…> • Messages in this topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/topi…> (1) Visit Your Group<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/info;_ylc=X3oDMTJm…> [Yahoo! Groups]<https://uk.groups.yahoo.com/neo;_ylc=X3oDMTJlamQ0aTBqBF9TAzk3NDkwNTAzBGdycE…> • Privacy<https://info.yahoo.com/privacy/uk/yahoo/groups/details.html> • Unsubscribe<mailto:catfishfarmersnig-unsubscribe@yahoogroups.co.uk?subject=Unsubscribe> • Terms of Use<https://info.yahoo.com/legal/uk/yahoo/utos/en-gb/details.html> . __,_._,___ No virus found in this message. Checked by AVG - www.avg.com<http://www.avg.com> Version: 2016.0.7859 / Virus Database: 4664/13362 - Release Date: 11/07/16

8 years, 1 month

FW: Problems with survival rates of Clarias juveniles in the hatchery ....

by William Leschen

-----Original Message----- From: Ingénieur Halieute [mailto:hulianzangue@gmail.com] Sent: 08 November 2016 10:23 To: William Leschen <william.leschen(a)stir.ac.uk> Subject: Re: Problems with survival rates of Clarias juveniles in the hatchery .... bien vouloir me contacter au +237 676840456 pour expertise conseils pour votre soucis larvaire. 2016-11-07 16:10 UTC+01:00, William Leschen via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk>: > English translation below > > From: AHOCOU Alexandre K [mailto:alexahocou@gmail.com] > Sent: 07 November 2016 12:48 > To: William Leschen <william.leschen(a)stir.ac.uk> > Subject: Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings > available for sale in Mowe ( close to market) The power of networks....... > > Bonjour à tous > Juste savoir si quelqu'un peut me donner des infos sur comment faire > pour avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. > En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour > de nourrissage à l'artémia décapsulé on observe une forte mortalité et > pour les jours suivants. Et pourtant on fait un bon siphonnage, l'eau > (eau de forage à ph =5.3) sur les larves est renouvelée au moins 2 > fois dans la journée après s'être oxigénée. > J'ai à un moment donné pensé que la cause de la mortalité des alevins > pouvait être soit des virus, bactéries, levures ou champignons. Alors > j'ai fait installer un stérilisateur UV de 30 watt à travers lequel > l'eau transite avant d'atteindre les larves mais pas d'amélioration. > Si quelqu'un a donc une expérience en la matière je serai très > sensible à sa bonne volonté de partage. > Merci > AHOCOU Koba > alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> > Tél : 90 22 15 83 > > 2016-11-07 10:23 GMT+00:00 William Leschen via > Sarnissa-african-aquaculture > <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: > > Hello everyone > Just to know if anyone can give me information on how to get a > survival rate of at least 50% catfish fingerlings gariepinus. > Indeed, the hatching rate is good but already from the 3rd day of > feeding decapsulated Artemia there are high mortalities and for the following days. > And yet we also siphoned off water and replaced it (well water at pH = > 5.3) for the larvae repeating this at least 2 times a day after the water > had been well oxygenated. > At first I thought that the cause of the mortality of the fry could > be either virus, bacteria, yeast or fungi. So I installed a 30 watt UV > sterilizer through which the water passes before reaching the larvae > but no improvement. > So if anyone has experience in this area I will be very willing to > hear from you . > Thank you > Koba AHOCOU > alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 > Email and mobile phone whats app networks developing commercial > aquaculture in Nigeria > > Dear all > > Please see below note how this simple yahoo email catfish farmers forum > in Nigeria now with hundreds of members all over the country are buying > and selling not just fingerlings and market fish but also inputs feed > fertilisers etc also for questions and advice There is also a > similar equally popular Nigerian catfish farmers mobile phone whats app > group which has daily messages on the same subjects and thus huge > networks of fish farmers communicating with each other on daily basis- In > the last weeks on the catfish farmers app they have been discussing > market process for their grow out fish and how they can potentially > state and then country wide try to control prices - as their margins are > ever declining due to the continually increasing prices per tonne of > commercial feed in the country…………………. > > Please note this for sarnissa fish farmers in other countries - > also for those involved in aquaculture development across SS Africa > both govts and also national and international donors and investors - > These email and mobile phone whats app networks cost next to nothing to > set up and normally just the time of a dedicated individual to run them > - And the impacts and concrete positive outcomes from them are huge …. > > Best wishes Will > > Sustainable Aquaculture Research Group Institute of Aquaculture, > University of Stirling UK > > www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> > > Read about the Sustainable Aquaculture Research Group’s new projects > and activities at http://www.susaquastirling.net/ > > Follow Daily updated Facebook sites (news, publications, videos, > employment, funding, investment and other) for: > > Inst of Aquaculture Stirling Scotland > UK<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Sc > otland-UK/219303798156967?ref=hl> > > SARNISSA African Aquaculture Network > <https://www.facebook.com/sarnissaafrica?ref=hl> > > Aquaculture Enterprise > Malawi<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57 > 2805602862378?fref=nf> > > SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) > <https://www.facebook.com/SEATGlobal?ref=hl> > > [cid:image005.jpg@01D238E1.06B88A00]<http://www.aqua.stir.ac.uk/> > [cid:image006.jpg@01D238E1.06B88A00] > > > From: > catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogrou > ps.co.uk> > [mailto:catfishfarmersnig@yahoogroups.co.uk<mailto:catfishfarmersnig@y > ahoogroups.co.uk>] > Sent: 07 November 2016 09:03 > To: catfishfarmersnig > <catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogro > ups.co.uk>> > Subject: [catfishfarmersnig] 10,000 Catfish fingerlings available for > sale in Mowe ( close to market) > > > > Dear Farmers, > Good morning. > > We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for > sale at our farm site in mowe. > > Serious buyers should please call Okey on 09034871998 for pricing > information and pickup arrangements. > > Regards and God Bless, > OkeE > > sent from myMTN Sm@rtphone > __._,_.___ > ________________________________ > Posted by: okenima_info > <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> > ________________________________ > Reply via web > post<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversa > tions/messages/7714;_ylc=X3oDMTJxY3M2ZmIyBF9TAzk3NDkwNTA1BGdycElkAzE0M > DU3NjExBGdycHNwSWQDMTY5MjM1NzUzNARtc2dJZAM3NzE0BHNlYwNmdHIEc2xrA3JwbHk > Ec3RpbWUDMTQ3ODUwOTQxMQ--?act=reply&messageNum=7714> > > • > > Reply to sender > <mailto:okenima_info@yahoo.co.uk?subject=Re%3A%2010%2C000%20Catfish%20 > fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20 > market%29> > > • > > Reply to group > <mailto:catfishfarmersnig@yahoogroups.co.uk?subject=Re%3A%2010%2C000%2 > 0Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20cl > ose%20to%20market%29> > > • > > Start a new > topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/convers > ations/newtopic;_ylc=X3oDMTJmaTZhM2wwBF9TAzk3NDkwNTA1BGdycElkAzE0MDU3N > jExBGdycHNwSWQDMTY5MjM1NzUzNARzZWMDZnRyBHNsawNudHBjBHN0aW1lAzE0Nzg1MDk > 0MTE-> > > • > > Messages in this > topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/convers > ations/topics/7714;_ylc=X3oDMTM1ZXR2NTM2BF9TAzk3NDkwNTA1BGdycElkAzE0MD > U3NjExBGdycHNwSWQDMTY5MjM1NzUzNARtc2dJZAM3NzE0BHNlYwNmdHIEc2xrA3Z0cGME > c3RpbWUDMTQ3ODUwOTQxMQR0cGNJZAM3NzE0> > (1) > > Visit Your > Group<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/info;_y > lc=X3oDMTJmZW1vNmExBF9TAzk3NDkwNTA1BGdycElkAzE0MDU3NjExBGdycHNwSWQDMTY > 5MjM1NzUzNARzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzE0Nzg1MDk0MTE-> > [Yahoo! > Groups]<https://uk.groups.yahoo.com/neo;_ylc=X3oDMTJlamQ0aTBqBF9TAzk3N > DkwNTAzBGdycElkAzE0MDU3NjExBGdycHNwSWQDMTY5MjM1NzUzNARzZWMDZnRyBHNsawN > nZnAEc3RpbWUDMTQ3ODUwOTQxMQ--> • > Privacy<https://info.yahoo.com/privacy/uk/yahoo/groups/details.html> • > Unsubscribe<mailto:catfishfarmersnig-unsubscribe@yahoogroups.co.uk?sub > ject=Unsubscribe> > • Terms of > Use<https://info.yahoo.com/legal/uk/yahoo/utos/en-gb/details.html> > > . > > > __,_._,___ > > -- Hulian ZANGUE Ingénieur Conception Aquaculture Responsable des Projets Cameroun Industrie & Service BP. 5770 Douala, Siège social: Douala - Akwa Portable: (237) 699686639 Bureau: (237) 233 42 39 27

8 years, 1 month

FW: Problems with survival rates of Clarias juveniles in the hatchery ....

by William Leschen

Traduire en francais au dessus From: Leslie [mailto:leslie@aquaafrica.co.za] Sent: 08 November 2016 03:42 To: William Leschen <william.leschen(a)stir.ac.uk>; sarnissa-french-aquaculture Mailing List <sarnissa-french-aquaculture(a)lists.stir.ac.uk> Subject: RE: Problems with survival rates of Clarias juveniles in the hatchery .... Good morning Koba With clients and on our own R&D facility we have put enormous effort into perfecting the survival and growth rate of African catfish over the past years. I can tell you that there are several factors that are key to obtaining this, including optimising both water quality & feed, but even so a 50% survival is not realistic. If you get a 20% survival from egg to 1kg you are doing well. Regards, Leslie Bonjour Koba Avec nos clients et notre propre centre de R & D, nous avons déployé des efforts considérables pour améliorer le taux de survie et de croissance du poisson-chat africain au cours des dernières années. Je peux vous dire qu'il ya plusieurs facteurs qui sont essentiels à l'obtention de ce, y compris l'optimisation de la qualité de l'eau et de l'alimentation, mais même si une survie de 50% n'est pas réaliste. Si vous obtenez une survie de 20% de l'œuf à 1kg vous faites bien. Cordialement, Leslie [AI email signature]<http://www.aquaafrica.co.za/> From: Sarnissa-african-aquaculture [mailto:sarnissa-african-aquaculture-bounces@lists.stir.ac.uk] On Behalf Of William Leschen via Sarnissa-african-aquaculture Sent: 07 November 2016 05:10 PM To: sarnissa-african-aquaculture Mailing List; sarnissa-french-aquaculture Mailing List Subject: Problems with survival rates of Clarias juveniles in the hatchery .... English translation below From: AHOCOU Alexandre K [mailto:alexahocou@gmail.com] Sent: 07 November 2016 12:48 To: William Leschen <william.leschen(a)stir.ac.uk<mailto:william.leschen@stir.ac.uk>> Subject: Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings available for sale in Mowe ( close to market) The power of networks....... Bonjour à tous Juste savoir si quelqu'un peut me donner des infos sur comment faire pour avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour de nourrissage à l'artémia décapsulé on observe une forte mortalité et pour les jours suivants. Et pourtant on fait un bon siphonnage, l'eau (eau de forage à ph =5.3) sur les larves est renouvelée au moins 2 fois dans la journée après s'être oxigénée. J'ai à un moment donné pensé que la cause de la mortalité des alevins pouvait être soit des virus, bactéries, levures ou champignons. Alors j'ai fait installer un stérilisateur UV de 30 watt à travers lequel l'eau transite avant d'atteindre les larves mais pas d'amélioration. Si quelqu'un a donc une expérience en la matière je serai très sensible à sa bonne volonté de partage. Merci AHOCOU Koba alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tél : 90 22 15 83 2016-11-07 10:23 GMT+00:00 William Leschen via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: Hello everyone Just to know if anyone can give me information on how to get a survival rate of at least 50% catfish fingerlings gariepinus. Indeed, the hatching rate is good but already from the 3rd day of feeding decapsulated Artemia there are high mortalities and for the following days. And yet we also siphoned off water and replaced it (well water at pH = 5.3) for the larvae repeating this at least 2 times a day after the water had been well oxygenated. At first I thought that the cause of the mortality of the fry could be either virus, bacteria, yeast or fungi. So I installed a 30 watt UV sterilizer through which the water passes before reaching the larvae but no improvement. So if anyone has experience in this area I will be very willing to hear from you . Thank you Koba AHOCOU alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 Email and mobile phone whats app networks developing commercial aquaculture in Nigeria Dear all Please see below note how this simple yahoo email catfish farmers forum in Nigeria now with hundreds of members all over the country are buying and selling not just fingerlings and market fish but also inputs feed fertilisers etc also for questions and advice There is also a similar equally popular Nigerian catfish farmers mobile phone whats app group which has daily messages on the same subjects and thus huge networks of fish farmers communicating with each other on daily basis- In the last weeks on the catfish farmers app they have been discussing market process for their grow out fish and how they can potentially state and then country wide try to control prices - as their margins are ever declining due to the continually increasing prices per tonne of commercial feed in the country…………………. Please note this for sarnissa fish farmers in other countries - also for those involved in aquaculture development across SS Africa both govts and also national and international donors and investors - These email and mobile phone whats app networks cost next to nothing to set up and normally just the time of a dedicated individual to run them - And the impacts and concrete positive outcomes from them are huge …. Best wishes Will Sustainable Aquaculture Research Group Institute of Aquaculture, University of Stirling UK www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> Read about the Sustainable Aquaculture Research Group’s new projects and activities at http://www.susaquastirling.net/ Follow Daily updated Facebook sites (news, publications, videos, employment, funding, investment and other) for: Inst of Aquaculture Stirling Scotland UK<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Scotland-U…> SARNISSA African Aquaculture Network <https://www.facebook.com/sarnissaafrica?ref=hl> Aquaculture Enterprise Malawi<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57280560286237…> SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) <https://www.facebook.com/SEATGlobal?ref=hl> [cid:image002.jpg@01D23981.A73AD1E0]<http://www.aqua.stir.ac.uk/> [cid:image003.jpg@01D23981.A73AD1E0] From: catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk> [mailto:catfishfarmersnig@yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>] Sent: 07 November 2016 09:03 To: catfishfarmersnig <catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>> Subject: [catfishfarmersnig] 10,000 Catfish fingerlings available for sale in Mowe ( close to market) Dear Farmers, Good morning. We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for sale at our farm site in mowe. Serious buyers should please call Okey on 09034871998 for pricing information and pickup arrangements. Regards and God Bless, OkeE sent from myMTN Sm@rtphone __._,_.___ ________________________________ Posted by: okenima_info <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> ________________________________ Reply via web post<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/mess…> • Reply to sender <mailto:okenima_info@yahoo.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Reply to group <mailto:catfishfarmersnig@yahoogroups.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Start a new topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/newt…> • Messages in this topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/topi…> (1) Visit Your Group<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/info;_ylc=X3oDMTJm…> [Yahoo! Groups]<https://uk.groups.yahoo.com/neo;_ylc=X3oDMTJlamQ0aTBqBF9TAzk3NDkwNTAzBGdycE…> • Privacy<https://info.yahoo.com/privacy/uk/yahoo/groups/details.html> • Unsubscribe<mailto:catfishfarmersnig-unsubscribe@yahoogroups.co.uk?subject=Unsubscribe> • Terms of Use<https://info.yahoo.com/legal/uk/yahoo/utos/en-gb/details.html> . __,_._,___ No virus found in this message. Checked by AVG - www.avg.com<http://www.avg.com> Version: 2016.0.7859 / Virus Database: 4664/13362 - Release Date: 11/07/16

8 years, 1 month

Problems with survival rates of Clarias juveniles in the hatchery ....

by William Leschen

English translation below From: AHOCOU Alexandre K [mailto:alexahocou@gmail.com] Sent: 07 November 2016 12:48 To: William Leschen <william.leschen(a)stir.ac.uk> Subject: Re: FW: [catfishfarmersnig] 10, 000 Catfish fingerlings available for sale in Mowe ( close to market) The power of networks....... Bonjour à tous Juste savoir si quelqu'un peut me donner des infos sur comment faire pour avoir un taux de survie d'au moins 50% des alevins de clarias gariepinus. En effet, le taux d'éclosion est bon mais déja à partir du 3ème jour de nourrissage à l'artémia décapsulé on observe une forte mortalité et pour les jours suivants. Et pourtant on fait un bon siphonnage, l'eau (eau de forage à ph =5.3) sur les larves est renouvelée au moins 2 fois dans la journée après s'être oxigénée. J'ai à un moment donné pensé que la cause de la mortalité des alevins pouvait être soit des virus, bactéries, levures ou champignons. Alors j'ai fait installer un stérilisateur UV de 30 watt à travers lequel l'eau transite avant d'atteindre les larves mais pas d'amélioration. Si quelqu'un a donc une expérience en la matière je serai très sensible à sa bonne volonté de partage. Merci AHOCOU Koba alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tél : 90 22 15 83 2016-11-07 10:23 GMT+00:00 William Leschen via Sarnissa-african-aquaculture <sarnissa-african-aquaculture(a)lists.stir.ac.uk<mailto:sarnissa-african-aquaculture@lists.stir.ac.uk>>: Hello everyone Just to know if anyone can give me information on how to get a survival rate of at least 50% catfish fingerlings gariepinus. Indeed, the hatching rate is good but already from the 3rd day of feeding decapsulated Artemia there are high mortalities and for the following days. And yet we also siphoned off water and replaced it (well water at pH = 5.3) for the larvae repeating this at least 2 times a day after the water had been well oxygenated. At first I thought that the cause of the mortality of the fry could be either virus, bacteria, yeast or fungi. So I installed a 30 watt UV sterilizer through which the water passes before reaching the larvae but no improvement. So if anyone has experience in this area I will be very willing to hear from you . Thank you Koba AHOCOU alexahocou(a)gmail.com<mailto:alexahocou@gmail.com> Tel: 90 22 15 83 Email and mobile phone whats app networks developing commercial aquaculture in Nigeria Dear all Please see below note how this simple yahoo email catfish farmers forum in Nigeria now with hundreds of members all over the country are buying and selling not just fingerlings and market fish but also inputs feed fertilisers etc also for questions and advice There is also a similar equally popular Nigerian catfish farmers mobile phone whats app group which has daily messages on the same subjects and thus huge networks of fish farmers communicating with each other on daily basis- In the last weeks on the catfish farmers app they have been discussing market process for their grow out fish and how they can potentially state and then country wide try to control prices - as their margins are ever declining due to the continually increasing prices per tonne of commercial feed in the country…………………. Please note this for sarnissa fish farmers in other countries - also for those involved in aquaculture development across SS Africa both govts and also national and international donors and investors - These email and mobile phone whats app networks cost next to nothing to set up and normally just the time of a dedicated individual to run them - And the impacts and concrete positive outcomes from them are huge …. Best wishes Will Sustainable Aquaculture Research Group Institute of Aquaculture, University of Stirling UK www.aqua.stir.ac.uk<http://www.aqua.stir.ac.uk/> Read about the Sustainable Aquaculture Research Group’s new projects and activities at http://www.susaquastirling.net/ Follow Daily updated Facebook sites (news, publications, videos, employment, funding, investment and other) for: Inst of Aquaculture Stirling Scotland UK<https://www.facebook.com/pages/Institute-of-Aquaculture-Stirling-Scotland-U…> SARNISSA African Aquaculture Network <https://www.facebook.com/sarnissaafrica?ref=hl> Aquaculture Enterprise Malawi<https://www.facebook.com/pages/Aquaculture-Enterprise-Malawi/57280560286237…> SEAT Sustaining Ethical Aquaculture Trade Asia (SEAT) <https://www.facebook.com/SEATGlobal?ref=hl> [cid:image005.jpg@01D238E1.06B88A00]<http://www.aqua.stir.ac.uk/> [cid:image006.jpg@01D238E1.06B88A00] From: catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk> [mailto:catfishfarmersnig@yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>] Sent: 07 November 2016 09:03 To: catfishfarmersnig <catfishfarmersnig(a)yahoogroups.co.uk<mailto:catfishfarmersnig@yahoogroups.co.uk>> Subject: [catfishfarmersnig] 10,000 Catfish fingerlings available for sale in Mowe ( close to market) Dear Farmers, Good morning. We are offering 10,000 Catfish ( Clarias Garipenus) fingerlngs for sale at our farm site in mowe. Serious buyers should please call Okey on 09034871998 for pricing information and pickup arrangements. Regards and God Bless, OkeE sent from myMTN Sm@rtphone __._,_.___ ________________________________ Posted by: okenima_info <okenima_info(a)yahoo.co.uk<mailto:okenima_info@yahoo.co.uk>> ________________________________ Reply via web post<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/mess…> • Reply to sender <mailto:okenima_info@yahoo.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Reply to group <mailto:catfishfarmersnig@yahoogroups.co.uk?subject=Re%3A%2010%2C000%20Catfish%20fingerlings%20available%20for%20sale%20in%20Mowe%20%28%20close%20to%20market%29> • Start a new topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/newt…> • Messages in this topic<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/conversations/topi…> (1) Visit Your Group<https://uk.groups.yahoo.com/neo/groups/catfishfarmersnig/info;_ylc=X3oDMTJm…> [Yahoo! Groups]<https://uk.groups.yahoo.com/neo;_ylc=X3oDMTJlamQ0aTBqBF9TAzk3NDkwNTAzBGdycE…> • Privacy<https://info.yahoo.com/privacy/uk/yahoo/groups/details.html> • Unsubscribe<mailto:catfishfarmersnig-unsubscribe@yahoogroups.co.uk?subject=Unsubscribe> • Terms of Use<https://info.yahoo.com/legal/uk/yahoo/utos/en-gb/details.html> . __,_._,___

8 years, 1 month

[Dialoguebarrages] Les impacts desastreux en Irak du barrage iranien Daryan

by Thierry Uso

Cela ne concerne pas l'Afrique de l'Ouest, mais c'est néanmoins fort intéressant ;-) The Save the Tigris and Iraqi Marshes Campaign have released a report on the impact of the Daryan Dam on the Kurdistan Region of Iraq. The Daryan Dam is a large dam currently under construction on the Sirwan River in Iran. The report highlights the controversial construction of dams for purposes of self-interest in a water scarce region despite evidence of their significant negative impact both locally, through displacement, and downstream, through reduced water flows. http://www.fame2012.org/en/2016/10/28/iranian-daryan-dams-desastrous-impact… --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast. https://www.avast.com/antivirus _______________________________________________ Dialoguebarrages mailing list Dialoguebarrages(a)lists.dialoguebarrages.net http://lists.dialoguebarrages.net/listinfo/dialoguebarrages

8 years, 1 month

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Sarnissa-french-aquaculture November 2016