【摘要】 本试验选用144头三元杂交猪(杜洛克×长白×大白),平均分为4组,分别饲喂基础日粮(CS)、CS+2×109cfu/kg乳酸链球菌(StreptococcusLactics)、CS+0.45%的蚯蚓粉、CS+2×109cfu/kg乳酸链球菌+0.45%的蚯蚓粉,测定了仔猪生产性能、粪的pH、大肠杆菌、乳酸菌、梭菌和优杆菌的数量、铵态氮、总氮、挥发性氨氮和主要的臭气化合物含量以及血清中的各项指标。试验结果表明:乳酸链球菌降低了粪便的pH、粪便中大肠杆菌的数量以及粪便中异戊酸、对甲酚等臭气化合物的含量(P<0.05),提高了粪便中乙酸、丙酸的含量(P<0.05);蚯蚓粉能降低粪便pH值、干物质和粪便中吲哚的含量(P<0.05),但同时能增加乙酸、丙酸和3-甲基吲哚的浓度(P<0.05);与单独添加乳酸链球菌或蚯蚓粉相比,在仔猪日粮中同时添加乳酸链球菌和蚯蚓粉能提高排泄物中挥发性氨和血清中尿素的含量(P<0.05),但也明显降低了粪便中的对甲酚、吲哚的含量(P<0.05),而对粪便pH、挥发性脂肪酸和3-甲基吲哚的含量均无明显影响(P>0.05)。更多还原

【Abstract】 Effects of streptococcus lactics and earthworm powder on the performance,microbial populations and odorous compounds of feces were determined in this trial.Four dietary treatments,consisting of the basal diet(control),basal diet+2×109 cfu/kg streptococcus lactics,basal diet+0.45% earthworm powder and basal diet+2×109 cfu/kg streptococcus lactics+0.45% earthworn powder,were alloted to 144 piglets(Large White×Landrace×Duroc)which were randomly assigned to 12 pens(12× piglets per pen,3 pens per diet).Results showed that feces pH,E.coil counts,the concentrationo of iso-valeric acid,p-cresol in the feces were decreased(P<0.05)by streptococcus lactics,while the concentrations of acetic acid,propionic acid in feces were increased significantly(P<0.05).Feces DM,pH and the concentration of indole were decrease greatly(P<0.05),whereas the concentration of acetic,propionic and 3-methylindole in feces was increased(P<0.05)by earthworm powder supplementation.The ammonia emission from slurry and serum urea was increased significatnly,but no significant effects of feces pH,volatile fatty acids and 3-methylindole in the feces(P>0.05) were observed when piglets fed with diets containing with both streptococcus lactics and earthworm powder.更多还原