Development of least cost formulated feed for Tilapia rendalli in tank based grow- out culture system

Abstract: 
An experiment was conducted at Bunda fish farm from November 2009 to February 2010. Juveniles of Tillapia rendalli of average weight 9.5 ± SD 0.5g were stocked in outdoor concrete tanks and fed on diets of different plant protein sources formulated at different crude protein (CP) levels. The results indicated that fish treatments had significant effect on growth and survival. Fish fed on Diet 1 had an average final weight 25.64±0.79g, Diet 2 had final average weight of 23.31±0.71g, Diet 3 had final average weight of 21.71 ±0.80g and Diet 4 had an average final weight of 23.00±1.12g and differed significantly among treatments. Survival of the fish was highest in Treatments 2 and 3 which were 85.5% and 85.6%, respectively. Treatments 1 and 4 had low survival rates of 77.8 and 60%, respectively. This study established a potential of using a combination of local plant protein sources which was relatively cheap, readily available and easily accessible to make least cost feed for tilapia species in tank based grow out system.
Une expérience a été menée à la ferme de poissons à Bunda de novembre 2009 à février 2010. Les Tillapia rendalli juvéniles du poids moyen de 9,5 ± 0,5 g SD ont été stockés dans des réservoirs en béton en plein air et nourris avec des régimes alimentaires des différentes sources de protéines végétales en protéines brutes formulées dans différents niveaux (CP). Les résultats indiquent que les traitements de poisson ont un effet significatif sur la croissance et la survie. Les poissons nourris avec l’alimentation 1 a un poids moyen final de 25,64 ± 0.79g, L’alimentation 2 a le poids moyen final de 23,31 ± 0.71g, L’alimentation 3 avait le poids moyen final de 21,71 ± 0.80g et l’alimentation 4 avait un poids moyen final de 23,00 ± 1,12 g et variés significativement entre les traitements. La survie des poissons est la plus élevée dans les traitements 2 et 3 qui ont été respectivement de 85,5% et de 85,6%, Les traitements 1 et 4 ont un faible taux de survie de 77,8 et 60%, respectivement. Cette étude a établi un potentiel d’utilisation d’une combinaison de sources locales de protéines végétales qui a été relativement peu coûteux, facilement disponible et accessible à moins d’aliments pour les coûts et les espèces de tilapia dans le réservoir à base de système de reproduction.
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
Southern Africa
Author/Editor(s): 
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
Publisher: 
ISSN: 
E_ISSN: 
Edition: 
Extent: 
1239-1241
Notes: 

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Aqua Culture and Fisheries"