En francais au dessous
From: Lulijwa
Ronnie Ronald [mailto:rlulijwa@yahoo.com]
Sent: 24 October 2015 17:29
To: sarnissa-african-aquaculture Mailing List
Subject: Re: Tilapia Fingerling Lesions
Dear Members,
Could anyone have experienced these lesions in Tilapia fingerlings
If any, what could be the possible cause (fungal or bacterial?)
Nice evening
See below for more details
LULIJWA Ronald
Aquaculture Scientist
National Agricultural Research Organisation (NARO)
Rwebitaba Zonal Agricultural Research and Development Institute. P. O. Box, 96, Fort Portal, Uganda.
Dear Will,
These fingerlings are coming from earthen ponds, that gets water from an underground spring connected to a farm reservior
The area of operation is at high altitude and average temperatures are around 26°C, water quality is acceptable but with high levels of suspended solids and green water. These fish receive a supplementary diet
made of formulated floating feed, and there has been no cases of mortality but that is the first case sofar reported. The stocking density is low and fingerlings size is about 5g, originating from the same farm.
Thank you
Lulijwa Ronald
Msc Aquaculture
Bsc Fisheries and Aquaculture
Chers membres,
Pouvait-on connu
ces lésions en alevins
de tilapia
Le cas échéant, ce qui pourrait être
la cause possible (fongique
ou bactérienne?)
Bonne soirée
Voir ci-dessous pour plus de détails
LULIJWA Ronald
Aquaculture Scientiste
National Agricultural Research Organisation
(NARO)
Rwebitaba Zonal
Agricultural Research and Development Institute.
P. O. Box,
96, Fort Portal, Ouganda.
________________________________________
Cher
Will,
Ces alevins sont en provenance
des étangs de terre, qui obtient
de l'eau d'une source souterraine
reliée à un reservior
agricole
La zone d'opération
est à haute altitude et les températures moyennes
sont autour de 26
° C, qualité de l'eau est acceptable, mais
avec des niveaux élevés de solides en suspension
et l'eau verte.
Ces poissons reçoivent une alimentation
complémentaire en
aliments flottants formulé, et il n'y a
eu aucun cas de mortalité, mais
qui est le premier cas
rapporté so far.
La densité de peuplement est faible et
alevins taille est environ 5 g,
provenant de la même exploitation.
Merci
On Sat, Oct 24, 2015 at 9:07 PM, William Leschen <william.leschen@stir.ac.uk> wrote:
Dear Ronald
Thank you – Ive compressed down the size of your photos – also made them lighter and hopefully
clearer - please can you resend again to the forum but this time include some background information about the fingerlings themselves ie
From earthpond? Tank? Raceway? Hapa? Area/volume of pond? Tank etc
Water source Spring? River? Borehole? Other?
Water temp?
Water quality ? good ? cloudy ? high suspended solids?
Fed regularly? Which feed?
Mortalities? Nos per day ?
Size in g of fingerlings
Nos in pond ?Stocking density in pond? Tank? Etc
Other species in holding unit ? Polyculture or just tilapia
Origin of the tilapia fingerlings ? stocked from ?
If you can give these further details it will help people on the forum to give you a better informed
reply
Best wishes Will
From: Lulijwa
Ronnie Ronald [mailto:rlulijwa@yahoo.com]
Sent: 24 October 2015 17:29
To: sarnissa-african-aquaculture Mailing List
Subject: Re: Tilapia Fingerling Lesions
Dear Members,
Could any one have experienced these lesions in Tilapia fingerlings
If any, what could be the possible cause (fungal or bacterial)
Nice evening
LULIJWA Ronald
Aquaculture Scientist
National Agricultural Research Organisation (NARO)
Rwebitaba Zonal Agricultural Research and Development Institute. P. O. Box, 96, Fort Portal, Uganda.
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