饲料中锌含量对斜带石斑鱼(Epinephelus coioides)生长、饲料效率、矿物质含量和体组成的影响  

EFFECT OF DIETARY ZINC ON GROWTH,FEED EFFICIENCY,MINERAL CONTENT AND BODY COMPOSITION OF JUVENILE GROUPER EPINEPHELUS COIOIDES

作　　者：叶超霞[1,2] 刘永坚[2] 田丽霞[2] 周立斌[3] 阳会军[2] 梁桂英[2] 

机构地区：[1]华南师范大学生命科学学院广东省水产健康安全养殖重点实验室广州510631 [2]中山大学水生经济动物研究所广州510275 [3]惠州学院生命科学系惠州516007

出　　处：《海洋与湖沼》2013年第1期83-89,共7页Oceanologia Et Limnologia Sinica

基　　金：国家科技支撑计划项目,2007BAD29B04号;广东省重点实验室建设项目,2009A060800019号;广东省自然科学基金,SZ2011010005079号;惠州市科技计划项目,2011B040010003号

摘　　要：以ZnSO4·7H2O为锌源,用锌添加量为0、20、40、60、80和100mg/kg的实验饲料投喂斜带石斑鱼12周,研究其对斜带石斑鱼生长、饲料效率、矿物质含量和体组成的影响。结果表明,各实验组的增重率,饲料效率,存活率和全鱼、脊椎骨、鳞片的锌含量无显著差异。全鱼、脊椎骨和鳞片的锰含量均随着饲料中锌的添加而降低,锰和锌存在明显的拮抗关系。全鱼的铁含量随着饲料中锌的添加而降低。全鱼、脊椎骨和鳞片的钙、磷、镁含量均不受饲料中锌含量的影响。饲料中添加锌对全鱼水分、灰分,肌肉水分、脂肪,形态学指标,红细胞比容和血红蛋白含量没有显著影响。饲料中不添加锌时,全鱼的蛋白、脂肪和肌肉的蛋白、灰分含量较低。实验结果表明基础饲料中33mg/kg的锌已经满足斜带石斑鱼生长的需求,能使鱼体锌达到饱和。This study was conducted to investigate the effect of dietary zinc on growth, mineral concentration and body composition of juvenile grouper, Epinephelus coioides. Six diets were prepared by supplementing a casein-gelatin-based diet with 0, 20, 40, 60, 80 and 100mg/kg zinc from ZnSO4·7H2O. The analyzed zinc contents of the diets were 33, 64, 98, 123, 163, 190mg/kg respectively. Grouper with an initial weight of （8.54-0.1）g were fed to satiation for 12 weeks. Growth, feed efficiency, survival, zinc concentrations of whole body, vertebrae and scale were not significantly affected by dietary zinc supplements. Manganese concentrations of whole body, vertebrae and scale were all significantly deceased by dietary zinc supplements. Whole body ferrum decreased with increasing dietary zinc. Calcium, phosphorus and magnesium con-centrations of whole body, vertebrae and scale were not significantly affected by dietary zinc supplements. Dietary zinc concentration had no significant effect on whole body moisture and ash, muscle moisture and lipid, morphological and haematological indicators. Whole body protein, lipid and muscle protein, ash were lower when fish were fed the basal diet without zinc supplement. Based on our results, 33mg/kg zinc from the basal diet met the zinc requirement of grouper.

关 键 词：斜带石斑鱼 锌需要量 生长 矿物质 

分 类 号：S963[农业科学—水产养殖]