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《動物營養(英文版)》 2015-04
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Growth rate,body composition, digestive enzymes and transaminase activities,and plasma ammonia concentration of different weight Jian carp(Cyprinus carpio var. Jian)

Jun Jiang;Lin Feng;Ling Tang;Yang Liu;Weidan Jiang;Xiaoqiu Zhou;College of Animal Science and Technology,Sichuan Agricultural University;Animal Nutrition Institute,Sichuan Agricultural University;Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province,Sichuan Agricultural University;Animal Nutrition Institute, Sichuan Academy of Animal Science;  
The present study investigated the effect of body weight on body composition, digestive and absorptive capacity, transaminase activities in hepatopancreas and muscle, and plasma ammonia concentration of Jian carp(Cyprinus carpio var.Jian). A total of 750 Jian carps(18.0 ± 0.2 g) were randomly distributed into five groups with three replicates and fed the same diet for 56 days. Tissue and plasma samples were collected on days 14, 28,42, and 56. The results were used to develop a mathematical model for specific growth rate, body moisture and fat content, aspartate transaminase activity and alanine aminotransferase activity in hepatopancreas and muscle, plasma ammonia concentration, and trypsin, chymotrypsin, lipase, and amylase activities in hepatopancreas and intestine, activities of creatine kinase, Na~+/K~+-ATPase, alkaline phosphatase, and γ-glutamyl transpeptidase in intestine in Jian carp. There were linear relationships between natural logarithms of above indexes and body weight. The body moisture and fat content, digestive and absorptive enzymes activities, and transaminase activities showed negative allometry against body weight of Jian carp which were partial reasons to explain fish growth rate decreasing.
【Fund】: financially supported by the National Department Public Benefit Research Foundation(Agriculture)of China(2010003020)
【CateGory Index】: S965.116
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