枯草芽孢杆菌和粪肠球菌对鲫生长性能的影响

Effects of Bacillus subtilis and Enterococcus faecalis on growth performance of Carassius auratus auratus

为了研究复合益生菌(ComplexBeneficial Microorganisms,CBM)对水产养殖动物生长性能的影响,以鲫(Carassius auratus)为研究对象,探讨枯草芽孢杆菌(Bacillus subtilis)和粪肠球菌(Enterococcus faecalis)对其生长的影响。试验选择体质量为(98.5±1.5)g的鲫600尾,随机分为4组,即对照组、处理A组、处理B组和处理C组。对照组鲫投喂基础饲料,处理A组投喂添加有枯草芽孢杆菌和粪肠球菌的基础饲料,处理B组投喂添加有枯草芽孢杆菌的基础饲料,处理C组投喂添加有粪肠球菌的基础饲料。每组分3个平行,每个平行小组50尾。整个饲养时间为期50d。试验过程记录鲫的始末体重、采食量及成活情况。结果发现,处理A组的末期均重、增重率、成活率和特定生长率均极显著地高于对照组(P<0.01),饵料系数极显著地低于对照组和另外两个试验组(P<0.01)。3个试验组中处理A组的末期均重、增重率和成活率均显著的高于处理B组和C组(P<0.05),且处理A组的特定生长率极显著的高于处理B组和C组(P<0.01)。试验证明投喂添加有枯草芽孢杆菌和粪肠球菌基础饲料鲫的生长性能最优,且饲料利用率最高。

In order to study the effects of Complex Beneficial Microorganisms(CBM)on the growth performance of aquaculture animals,Carassius auratus was used as the research object to investigate the effects of Bacillus subtilis and Enterococcus faecalis on its growth.Enterococcus faecalis on their growth.Six hundred Carassius auratu with body mass of(98.5±1.5)g were randomly divided into four groups,i.e.,control,treatment A,treatment B and treatment C.The control group was fed with basic diets.The control group of Carassius auratu was fed with basal feed,treatment A group was fed with basal feed supplemented with Bacillus subtilis and Enterococcus faecalis,treatment B group was fed with basal feed supplemented with Bacillus subtilis and treatment C group was fed with basal feed supplemented with Enterococcus faecalis.Each group was divided into 3 parallels with 50 tails in each parallel group.The whole feeding period lasted for 50 days.The beginning and end weights,feed intake and survival of Carassius auratu were recorded during the experiment.It was found that the mean weight at the end,weight gain rate,survival rate and specific growth rate of treatment group A were all significantly higher than those of the control group(P<0.01),and the bait coefficients were significantly lower than those of the control group and the other two experimental groups(P<0.01).Among the three experimental groups,the mean weight at the end,weight gain rate,and survival rate of treatment group A were significantly higher than those of treatment groups B and C(P<0.05),and the specific growth rate of treatment group A was significantly higher than that of treatment groups B and C(P<0.01).growth rate was highly significant(P<0.01)higher than that of treatment groups B and C.The experiment showed that the Carassius auratu fed the basal diet supplemented with Bacillus subtilis and Enterococcus faecalis had the best growth performance and the highest feed utilization rate.