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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The effect of various dietary protein levels on growth and body composition of young common carp raised from 56 g to 170 g in recirculating system was investigated for 15 weeks when they were fed to visual satiety three times daily. Five experimental diets were formulated to contain 40, 35, 30, 25 and 21% protein levels and 3.56, 3.59, 3.63, 3.66 and 3.69 kcal/g diet GE levels, respectively.
Mean survival rates of the fish fed the 40, 35, 30 and 25% protein diets were not different, but significantly higher than that of the fish fed the 21% protein diet (P<0.05). Weight gain (g/tank) of common carp fed the 30% protein diet was the best. However, weight gain of the fish fed the 25, 30, 35 and 40% protein diets were not different, but significantly better than that of the fish fed the 21% protein diet.
Feed efficiency ratio for the 21% protein diet was significantly lower (P<0.05) than for other groups of diets, which were not different among them. Protein efficiency ratio for the 25 and 21% protein diets were significantly higher than for other groups of diets (P<0.05). Energy efficiency ratio for the 21% protein diet was significantly lower (P<0.05) than for other groups of diets, which were not different among them (P>0.05).
Dietary protein level had no effect on hemoglobin content in the fish (P>0.05). Crude protein contents of whole body of the fish fed the 35 and 40% protein diets were significantly higher than that of the fish fed the 21% or 25% protein diet (P<0.05). Body crude lipid contents of the fish fed the 21 and 25% protein diets were significantly higher than that of the fish fed the 30% or 35% protein diet. Crude ash contents of the fish fed the 35 and 40% protein diets were significantly higher than that of the fish fed the 21% or 25% protein diet (P<0.05). Moisture content of the fish fed the 35% protein diet was significantly higher than that of the fish fed the 21% protein diet (P<0.05).
In considering growth performance of common carp and efficiency of diet, dietary protein level could be lowered up to 25% without the reduction of young common carp production in recirculating system.
Mean survival rates of the fish fed the 40, 35, 30 and 25% protein diets were not different, but significantly higher than that of the fish fed the 21% protein diet (P<0.05). Weight gain (g/tank) of common carp fed the 30% protein diet was the best. However, weight gain of the fish fed the 25, 30, 35 and 40% protein diets were not different, but significantly better than that of the fish fed the 21% protein diet.
Feed efficiency ratio for the 21% protein diet was significantly lower (P<0.05) than for other groups of diets, which were not different among them. Protein efficiency ratio for the 25 and 21% protein diets were significantly higher than for other groups of diets (P<0.05). Energy efficiency ratio for the 21% protein diet was significantly lower (P<0.05) than for other groups of diets, which were not different among them (P>0.05).
Dietary protein level had no effect on hemoglobin content in the fish (P>0.05). Crude protein contents of whole body of the fish fed the 35 and 40% protein diets were significantly higher than that of the fish fed the 21% or 25% protein diet (P<0.05). Body crude lipid contents of the fish fed the 21 and 25% protein diets were significantly higher than that of the fish fed the 30% or 35% protein diet. Crude ash contents of the fish fed the 35 and 40% protein diets were significantly higher than that of the fish fed the 21% or 25% protein diet (P<0.05). Moisture content of the fish fed the 35% protein diet was significantly higher than that of the fish fed the 21% protein diet (P<0.05).
In considering growth performance of common carp and efficiency of diet, dietary protein level could be lowered up to 25% without the reduction of young common carp production in recirculating system.
목차
Abstract
Introduction
MATERIAL AND METHODS
RESULTS AND DISCUSSION
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UCI(KEPA) : I410-ECN-0101-2009-529-015347141