Desempenho produtivo de tilápia do Nilo alimentada com níveis de colina na dieta
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Data
2010
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Resumo
A 109-day feeding trial was undertaken aiming to evaluate the growth performance of
Nile tilapia fed graded choline levels. One hundred and ninety-two (initial weight 4.0 ±
0.15 g) fingerlings were distributed into 32 net cages (200 L each), four cages per treatment
and six fish per cage, placed in eight 1000L aquaria in a closed recirculation system. The
treatments were assigned to the tanks comprising eight treatments and four replications
arranged in a completely randomized experimental design. Diets were supplemented with
choline chloride to provide 100, 200, 400, 600, 800, 1000, 1200 mg of choline per kg of feed
and an unsupplemented diet. No significant differences were observed in growth
performance, survival, apparent feed conversion, liver and fillet ether extract, hepatosomatic
index and plasma lipid concentration, among treatments. Choline levels did not improve
growth performance, possibly because the amount of choline in the diet had already met
fish requirement.
Descrição
Palavras-chave
Cloreto de colina, Nutrição de peixes, Oreochromis niloticus, Vitamina, Choline chloride, Fish nutrition, Vitamin
Citação
FERNANDES JUNIOR, Ademir Calvo et al. Desempenho produtivo de tilápia do Nilo alimentada com níveis de colina na dieta. Animal Sciences, Maringá, v. 32, n. 2, p. 163-167, 2010.