【摘要】 挑选体重为(10.49±0.13)g健康的中华绒螯蟹180只,平均分成6组,每组3个重复,分别饲喂含0、0.25×109、0.5×109、1×109、2×109、4×109 cfu/kg枯草芽孢杆菌的饲料,进行8周的生长试验,以探讨芽孢杆菌对中华绒螯蟹生长性能及体成分的影响。试验结果表明,随着枯草芽孢杆菌添加量的增加,中华绒螯蟹的生长呈现先上升后下降的趋势,当饲料中添加1×109 cfu/kg时增重和特定生长率最大,且显著高于其他各组(P<0.05);通过方差分析,各个组全蟹的水分、粗脂肪、粗蛋白、粗灰分差异不显著(P>0.05);添加枯草芽孢杆菌试验组能降低肝体指数,1×109cfu/kg组的肝体指数最小,且显著小于对照组(P<0.05)。由此可见,饲料中添加适宜的枯草芽孢杆菌可显著提高中华绒螯蟹的生长,且不会明显改变全蟹的营养成分组成,适宜添加量为1×109 cfu/kg。更多还原

【Abstract】 To study the effects of bacillus subtilis on growth and body composition of Chinese mitten crab(Eriocheir Sinensis),180 healthy crabs with initial body weight(10.49±0.13) g were allocated to 6 groups with 3 replications,feeding diets with 0,0.25×109,0.5×109,1×109,2×109,4×109 cfu/kg bacillus subtilis respectively for 8 weeks.The results showed that,with the amount of bacillus subtilis going up,Chinese mitten crab’s growth increased first and then showed a downward trend,the group of adding 1×109 cfu/kg had the best weight gain and specific growth rate,which was significantly higher than the growth of other groups(P<0.05).The body composition of crabs,like moisture,crude fat,crude protein and crude ash had no significant difference in 6 groups(P>0.05).By analyzing of variance,the liver weight ratio of adding 1×109 cfu/kg group was significantly smaller than that of the control group(without adding bacillus subtilis group)(P<0.05).By the results,we could find the best additive amount of bacillus subtilis in Chinese mitten crab diet was 1×109 cfu/kg.更多还原