【摘要】 采用单因素试验设计方法,进行了不同饲料脂肪水平对三疣梭子蟹(Portunus trituberculatus)幼蟹生长及体组成影响的研究。结果表明,低饲料脂肪水平(1.8%)组的增重率和特定生长率最低,饲料脂肪水平为4.2%组的增重率和特定生长率最高。不同饲料处理对三疣梭子蟹蟹体的水分、粗蛋白和灰分含量无显著影响,饲料脂肪水平为9.01%组蟹体的脂肪含量最高,饲料脂肪水平为1.8%组的蟹体脂肪含量最低。饲料处理显著影响各处理组的性腺指数,饲料脂肪水平为13.76%组的性腺指数最低。而不同饲料处理对各组的肝胰腺指数、壳宽、壳长和壳高无显著影响。本实验结果显示,4.2%—13.76%的饲料脂肪水平能满足三疣梭子蟹正常生长和发育所需。更多还原

【Abstract】 A one-way analysis model was used to investigate the effects of dietary lipid level on the growth perform- ance and body composition of juvenile swimming crab Portunus trituberculatus. After termination of the experiment, crabs fed the diets containing 1.8% lipid level had the lowest weight gain and special growth rate and fed the diets containing 4.2% lipid level had the highest weight gain and special growth rate. No significant differences were detected among treatments with respect to body moisture, crude protein and ash, crabs fed the diets containing 9.01% lipid level had the highest body crude fat and fed the diets containing 1.8% lipid level had the lowest body crude fat. Fed the diets containing 13.76% lipid level had the lowest gland index. No significant differences were detected among treatments with respect to hepatopancreas index, carapace length, carapace width and carapace height. Hence, our research suggests that it may be dietary lipid level ranging from 4.2% to 13.76% appears to meet the lipid requirement for this crab species.更多还原