Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/16215
Título: Optimum dietary crude protein requirement for juvenile cachama Piaractus brachypomus
Título(s) alternativo(s): Exigência ótima de proteína bruta para juvenis de pirapitinga, piaractus brachypomus
Autor: Vásquez-Torres, Wálter
Pereira Filho, Manoel
Arias-Castellanos, José Alfredo
Data do documento: 2011
Revista: Ciência Rural
É parte de: Volume 41, Número 12, Pags. 2183-2189
Abstract: A growth experiment was conducted to determine the optimal dietary protein requirement for juvenile cachama, Piaractus brachypomus. Six semi-purified isoenergetic experimental diets using casein and gelatin as protein sources were formulated to contain graded levels of protein (16, 20, 24, 28, 32 and 36%). Fish initially averaging 15.52±0.33g (mean±SD) were randomly distributed into the tanks (500L) as groups of 20 fish and fed to apparent satiation twice daily for 60 days. The results showed that feed consumption, feed conversion ratio, fish weight gain, specific growth rate, protein efficiency ratio and protein productive value were affected by dietary protein level (P<0.05). No significant differences were observed in proximal composition of carcass (P<0.05) in response to dietary protein. Analysis of dietary protein level x WG with a second order polynomial regression suggested a requirement of 31.6% CP for optimum growth.
DOI: 10.1590/S0103-84782011001200023
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