Effects of Dietary Calcium Levels on Growth Performance, Blood Biochemistry and Whole Body Composition in Juvenile Bighead Carp (Aristichthys nobilis)
文献类型: 外文期刊
第一作者: Liang, Hualiang
作者: Liang, Hualiang;Ji, Ke;Ge, Xianping;Ren, Mingchun;Xie, Jun;Mi, Haifeng;Ge, Xianping;Ren, Mingchun;Xie, Jun
作者机构:
关键词: Bighead carp;calcium;growth performance;blood parameters;body composition
期刊名称:TURKISH JOURNAL OF FISHERIES AND AQUATIC SCIENCES ( 影响因子:1.264; 五年影响因子:1.268 )
ISSN: 1303-2712
年卷期: 2018 年 18 卷 4 期
页码:
收录情况: SCI
摘要: An eight weeks feeding experiment was conducted to investigate the effects of dietary calcium (Ca) levels on growth performance, blood biochemistry and whole body composition in bighead carp (105.52 +/- 0.33g; 16.91 +/- 0.09cm). Six practical diets (31.0% crude protein, 6.0% crude lipid) were formulated to contain graded Ca levels ranging from 0.41% to 1.59% of dry diet. At the end of the feeding trial, results showed that survival rate (SR) was not significantly affected by dietary Ca level. Final weight (FW), weight gain (WG), specific growth rate (SGR) increased with the increasing dietary Ca level up to 1.26%, and thereafter showed a decreasing trend, while feed conversion ratio (FCR) showed a converse trend. Furthermore, high Ca level (1.59%) significantly increased the activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), and significantly decreased serum phosphorus (P) content (P<0.05). Alkaline phosphates (ALP) activity was significantly higher than other groups with Ca-deficient diets (0.41%) (P<0.05). High Ca level (1.59%) significantly decreased serum P levels. Serum Ca levels were not significantly affected by dietary Ca levels (P>0.05). Based on FCR and SGR, the optimal dietary Ca level was determined to be 1.26%, and the corresponding Ca/P ratio was calculated to be 1.13:1.
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