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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Protein turnover, amino acid profile and amino acid flux in juvenile shrimp Litopenaeus vannamei: effects of dietary protein source Mente, E.; Coutteau, P.; Houlihan, D.F.; Davidson, I.; Sorgeloos, P. (2002). Protein turnover, amino acid profile and amino acid flux in juvenile shrimp Litopenaeus vannamei: effects of dietary protein source. J. Exp. Biol. 205: 3107-3122 In: The Journal of Experimental Biology. Cambridge University Press: London. ISSN 0022-0949; e-ISSN 1477-9145, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 98733 [ download pdf ]

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Trefwoorden

Acids > Organic compounds > Organic acids > Amino acids Biochemical phenomena > Protein synthesis Casein Diets Invertebrates > Arthropods > Crustacea > Malacostraca > Decapoda > Shellfish > Shrimps Metabolism > Protein metabolism > Animal nutrition > Protein turnover Peptides > Proteins > Phosphoproteins > Milk proteins > Casein Population functions > Growth Shrimps Penaeus vannamei Boone, 1931 [WoRMS] Marien/Kust

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Auteurs		Top
Mente, E. Coutteau, P., meer Houlihan, D.F.	Davidson, I., meer Sorgeloos, P., meer

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Abstract

The effect of dietary protein synthesis and growth of juvenile shrimps Litopenaeus vannamei was investigated using three diets with equivalent protein content. Protein synthesis was investigated by a flooding dose of tritiated phenylalanine. Survival, specific growth and protein synthesis rates were higher, and protein degradation was lower, in shrimps fed a fish/squid/shrimp meal diet, or a 50% laboratory diet/50% soybean meal variant diet, than in those fed a casein-based diet. The efficiency of retention of synthesized protein as growth was 94% for shrimps fed the fish meal diet, suggesting a very low protein turnover rate; by contrast, the retention of synthesized protein was only 80% for shrimps fed the casein diet. The amino acid profile of the casein diet was poorly correlated with that of the shrimps, 4h after a single meal the protein synthesis rates increased following an increase in RNA activity. A model was developed for amino acid flux, suggesting that high growth rates involve a reduction in the turnover of proteins, while amino acid loss appears to be high.

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