[Influence of the type of dietary carbohydrate on the use of 2 protein sources by rainbow trout reared at 8 or 18C].
The effect of the type of dietary starch (gelatinized vs native) on the biological value of fish meal (FP) and fish soluble protein concentrate (CPSP) was studied through the nitrogen balance in rainbow trout (Oncorhynchus mykiss) reared for 3 weeks at 2 water temperatures: 8 or 18 degrees C. The protein sources were included in diets at a level of 60% and gelatinized or raw starch at a level of 30%. Gelatinized starch improved the biological value of FP and CPSP by reducing the metabolic nitrogen losses. Trout fed the diet with CPSP had a higher nitrogen excretion than those fed the diet with FP. The biological value of both protein sources was unaffected by water temperature.
Aguirre
P
P
INRA, station d'hydrobiologie, unité mixte Nutrition des poissons INRA-IFREMER, Saint-Pée-sur-Nivelle, France.
Medale
F
F
Kaushik
S J
SJ
D000821:Animal Feed; D000818:Animals; D004040:Dietary Carbohydrates / Q000008:administration & dosage / Q000494:pharmacology*; D004044:Dietary Proteins / Q000378:metabolism*; D004063:Digestion; D005782:Gels; D009584:Nitrogen / Q000008:administration & dosage / Q000378:metabolism; D017686:Oncorhynchus mykiss / Q000378:metabolism*; D013213:Starch / Q000008:administration & dosage / Q000494:pharmacology; D013696:Temperature
D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D005782:Gels; D013213:Starch; D009584:Nitrogen
Influence de la nature des glucides alimentaires sur l'utilisation de 2 sources protéiques par la truite Arc-en-ciel élevée à 8 degrees ou 18 degrees C.