水生生物学报2019，Vol.43Issue(2)：252-258,7.DOI:10.7541/2019.031
饲料碳水化合物水平对拟穴青蟹稚蟹生长、体成分和消化酶活性的影响
EFFECTS OF DIETARY CARBOHYDRATE LEVEL ON GROWTH PERFORMANCE, BODY COMPOSITION AND DIGESTIVE ENZYME ACTIVITIES OF JUVENILE CRAB, SCYLLA PARAMAMOSAIN
摘要
Abstract
To investigate the effects of dietary carbohydrate on growth performance, body composition and digestive enzyme activities of juvenile crab, Scylla paramamosain, five isonitrogenous and isolipidic diets with varying carbohydrate contents of 20.34％, 25.59％, 30.17％, 35.30％ and 39.95％ were fed to juvenile crabs with an average body weight of (38.11±0.55) mg of triplicate groups, respectively, for a 3-week feeding trial. Results showed that the survival rate, weight gain ratio and specific growth rate of the juvenile crabs significantly increased firstly and then decreased under the increased dietary carbohydrate level (P<0.05) with the highest level at 30.17％. With the increasing dietary carbohydrate level, the body crude protein and body ash contents of the crabs were significantly increased firstly and then decreased (P<0.05) with the highest level at 35.30％. Dietary carbohydrate level significantly affected amylase activity (P<0.05) without any significant influence on protease and lipase activities (P>0.05). The amylase activity significantly induced by high carbohydrate level (P<0.05). These results indicate that the diet with 25.59％-35.30％ carbohydrate could greatly support growth performance. The regression model analysis showed that the most suitable dietary carbohydrate level reach the highest weight gain ratio is 29.93％.关键词
拟穴青蟹稚蟹/碳水化合物水平/生长/体成分/消化酶活性Key words
Juvenile Scylla paramamosain/Carbohydrate level/Growth performance/Body composition/Digestive enzyme activities分类
农业科技引用本文复制引用
董兰芳,童潼,张琴,许明珠,赵艳飞,宋志飞,苏琼,聂振平,马来..饲料碳水化合物水平对拟穴青蟹稚蟹生长、体成分和消化酶活性的影响[J].水生生物学报,2019,43(2):252-258,7.基金项目
广西创新驱动发展专项资金项目(桂科AA17204044) （桂科AA17204044）
广西科学研究与技术开发计划项目(桂科合14125008-2-20) （桂科合14125008-2-20）
广西科技基地和人才专项(桂科AD18126005) （桂科AD18126005）
广西海洋生物技术重点实验室开放基金资助课题(GLMBT-201801)资助 （GLMBT-201801）
