Effects of different types of commercial feed on the zootechnical performance of larvae of the "Brazil" strain of tilapia of the nile oreochromis niloticus (linnaeus, 1758).

The objective of this study is to evaluate the influence of different types of commercial feed on the zoo technical performance on Brazil strain larvae of Nile tilapia Oreochromis niloticus (Linnaeus, 1758) in breeding conditions in Côte d'Ivoire. The study focused on four commercial foods, Ivograin, Skretting, Raanan and Real with 17%, 48%, 48%, 48% and 60% protein respectively. The average larvae 17.38 ± 1.92 mg were fed rations of 50% (1st week), 40% (2nd week), 30% (3rd week) and 25% (4th week) of their total biomass for 28 days.The results showed that the best zootechnical performance was obtained with the Skretting feed, followed by the Raanan feed. The final average weights achieved were 1020.44 ± 24.66 mg; 1615.55 ± 86.34 mg; 1478.44 ± 232.30 mg; 969.99 ± 369.29 mg respectively with Ivograin, Skretting, Raanan and Real. Larvae fed Ivograin feed had a high survival rate than those fed Skretting, Raanan and Real feeds. On the other hand, the nutrient quotient was significantly higher in larvae fed Ivograin and Real compared to other foods. The economic analysis showed that the cost of the feed distributed to larvae and the cost of the feed to produce the kilogram of fry were relatively higher with Skretting feed compared to Raanan, Ivograin and Real feed.