| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Optimum dietary crude protein requirement for juvenile cachama Piaractus brachypomus
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| Autores: |
Vásquez-Torres,Wálter
Pereira-Filho,Manoel
Arias-Castellanos,Jose Alfredo
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| Data: |
2011-12-01
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| Ano: |
2011
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| Palavras-chave: |
Tropical fish
Protein requirements
Growth performance
Feed utilization
Whole-body composition
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| Resumo: |
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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200023
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/S0103-84782011001200023
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.41 n.12 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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