| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Digestibilité des protéines et disponibilité des acides aminés de quelques matières premières chez le bar (Dicentrarchus labrax)
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| Autores: |
Spyridakis, P
Gabaudan, J
Metailler, Robert
Guillaume, J
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| Data: |
1988
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| Ano: |
1988
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| Resumo: |
Protein digestibility of soyabean meal, casein-gelatin mixture and fish hydrolysate was tested in the European sea bass, using increasing substitution levels in a reference diet. The protein digestibility of the latter composed of Norwegian fish meal had already been established (91 %). An accurate estimation of the apparent digestibility coefficient was made by linear regression, for the casein-gelatin mixture and soyabean meal, but not for fish hydrolysate (non significant correlation, p > 0.05). Protein digestibility estimated by extrapolation varied with the substitution level. The estimations obtained with the highest level used for each ingredient were close to those obtained by linear regression. However they exhibited a high variability for soyabean meal and, to a lesser extent, for fish hydrolysate. The availability of individual amino acids was also investigated in each protein source. For some amino acids it was different from that of total nitrogen, suggesting that the availability of essential amino acids should be used for accurate feed formulation. Metabolic fecal nitrogen and amino acids were determined using a protein-free diet, in order to estimate true availabilities. These coefficients were not significantly different from apparent availability coefficients.
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| Tipo: |
Text
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| Idioma: |
Francês
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| Identificador: |
http://archimer.ifremer.fr/doc/00164/27522/27904.pdf
DOI:10.1051/rnd:19880907
http://archimer.ifremer.fr/doc/00164/27522/
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| Editor: |
Editions Scientifiques Elsevier
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| Formato: |
application/pdf
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| Fonte: |
Reproduction Nutrition Development (0926-5287) (Editions Scientifiques Elsevier), 1988 , Vol. 28 , N. 6A , P. 1509-1517
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| Direitos: |
INRA / EDP Sciences
info:eu-repo/semantics/openAccess
restricted use
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