水生生物学报2017，Vol.41Issue(1)：101-107,7.DOI:10.7541/2017.13
维生素A对养成期草鱼生长性能以及骨骼中钙磷含量变化的影响
EFFECTS OF DIETARY VITAMIN A ON GROWTH PERFORMANCE AND CALCIUM AND PHOSPHORUS CONTENTS IN BONE OF SUBADULT GRASS CARP (CTENOPHARYNGODONIDELLUS)
摘要
Abstract
To determine the optimum dietary requirement of vitamin A (VA) of subadult grass carp (Ctenopharyn-godon idellus), seven isoenergetic and isonitrogenous semi-purified diets were formulated to contain VA level at 89, 732, 1129, 2378, 4688, 7218 and 9802 IU/kg diet respectively, for a 12-week growth trial that was conducted in 21 net-cages located in an earth pond. The results indicated that dietary VA level significantly regulated the specific growth rate (SGR) and feed conversion ratio (FCR) of subadult grass carp (P<0.05) with the highest SGR and the lowest FCR both in 4688 IU/kg group. Feeding rate, survival rate and hepatosomatic index were not affected by dietary VA level (P>0.05). Dietary VA level showed significant (P<0.05) effect on serum SOD activity with the highest SOD values in 4688 IU/kg group. Serum ALP activity, MDA, calcium (Ca) and phosphorus (P) contents were not significantly (P>0.05) affected by dietary VA level. Body moisture content in 9802 IU/kg group was significantly lower. Body lipid, protein and ash contents were not affected by dietary VA level (P>0.05). The ash contents either in skull or in vertebra were significantly affected (P<0.05) by dietary VA level. The higher Ca and P contents in skull and vertebra were both observed in 4688 and 7218 IU/kg groups (P<0.05). Broken-line analysis for the SGR of fish suggested that the optimal dietary VA content for subadult grass carp was 3184 IU/kg diet.关键词
养成期草鱼/维生素A/生长性能/生化分析/骨骼钙磷Key words
Subadult Grass carp/Vitamin A/Growth performance/Biochemical analysis/Bone homeostasis分类
农业科技引用本文复制引用
刘梦梅,陈娇娇,朱文欢,谭青松,吴凡,韩冬..维生素A对养成期草鱼生长性能以及骨骼中钙磷含量变化的影响[J].水生生物学报,2017,41(1):101-107,7.基金项目
公益性行业(农业)科研专项经费(201003020)资助[Supported by Special Fund for Agro-scientific Research in the Public Interest (201003020) （农业）
