-----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>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@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@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:
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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@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@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
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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