Fontes e n赤veis de prote赤na bruta em dietas para juvenis de apaiari (Astronotus ocellatus) = Sources and levels of crude protein in diets for oscar juveniles (Astronotus ocellatus)

作者：Thiago El Hadi Perez Fabregat; Joo Batista Kochenborger Fernandes; Laurindo Andre Rodrigues; Felipe de Azevedo Ribeiro

来源：Acta Scientiarum - Animal Sciences, 2006.

• farelo de soja
• farinha de peixe
• proteina animal
• protein a vegetal
• exigencia proteica
• valor nutricional
• soybean meal
• fish meal
• animal protein
• vegetable protein
• protein requirement
• nutritional value

Nove dietas experimentais combinando n赤veis de substitui o (0 , 50% e 100%) da farinha de peixe pelo farelo de soja, com tr那s n赤veis de prote赤na bruta (28 , 30 e 32%), foram fornecidas para juvenis de apaiari (22,42 g) durante 84 dias. A sub stitui o total da farinha de peixe afetou negativamente (P%26lt;0,05) a sobreviv那ncia, o ganho de peso, o consumo de ra o e o fator de condi o. Os peixes que receberam as dietas contendo somente farelo de soja apresentaram diminui o (P%26lt;0,05) no 赤ndice hepat ossom芍tico, no 赤ndice gorduro-viscerossom芍tico e na porcentagem de lip赤deo no f赤gado e no m迆sculo. Oganho de peso foi maior (P%26lt;0,05) para os peixes que receberam a dieta com 32% de prote赤na. A dieta contendo 28% de prote赤na bruta elevou (P%26lt;0,01) o 赤ndice hepatossom芍tico. O farelo de soja pode substituir 50% da farinha de peixe sem comprometer a performance. O n赤vel de 32% de prote赤na bruta foi o que proporcionou o melhor desempenho. Nine experimental diets combining levels of substitution (0 , 50 and100%) of the fish meal by soybean meal , with three levels of crude protein (28 , 30 and 32%) were supplied for oscar juveniles (22.42 g) during 84 days. The total replacement of fish meal by soybean meal inhibited the feed consumption and negatively affected (P%26lt;0.05) thesurvival, weight gain and condition factor. Fish fed with the diet containing only soybean meal the hepatosomatic index, intraperitoneal fat ratio, liver lipid and muscle lipid were smaller (P%26lt;0.05). The weight gain was better (P%26lt;0.05) in the fish fed with the dietcontaining 32% of crude protein. The hepatosomatic index was bigger (P%26lt;0.01) for the fish feed with the diet containing 28% of crude protein. Fish meal can be partially replaced in 50% by soybean meal. The best performance was obtained with the diet containing 32% ofcrude protein.