屎肠球菌8296对断奶仔猪生长性能、营养物质表观消化率和血清生化指标的影响

Effects of Enterococcus faecium on Growth,Nutrient Digestibility and Serum Biochemistry of Weaned Piglets

【目的】研究饲粮中添加屎肠球菌8296对断奶仔猪生长性能、营养物质表观消化率和血清生化指标的影响,为断奶仔猪应激能力提升提供依据。【方法】选取60头21日龄外三元(杜长大)断奶仔猪,随机分为3组(每组5个重复,每重复4头):对照组饲喂基础饲粮,2个屎肠球菌组(EF1组和EF2组)分别饲喂添加0.1%和0.3%屎肠球菌8296的基础饲粮,试验周期30 d。测定并比较3组仔猪的生长性能、营养物质表观消化率和血清生化指标。【结果】①与对照组相比,EF1组仔猪的平均日增重(ADG)显著提高(P<0.05),料重比(F/G)显著降低(P<0.05);EF2组ADG和平均日采食量(ADFI)分别极显著(P<0.01)和显著(P<0.05)提高,F/G极显著降低(P<0.01)。②EF2组仔猪的粗脂肪(EE)和钙(Ca)的表观消化率显著高于对照组(P<0.05),磷(P)的表观消化率极显著高于对照组(P<0.01)。③与对照组相比,EF1组仔猪血清中谷草转氨酶(AST)活性极显著降低(P<0.01),免疫球蛋白M(IgM)含量显著升高(P<0.05);EF2组球蛋白(GLO)、磷(P)、免疫球蛋白G(IgG)的含量显著降低(P<0.05),AST活性极显著降低(P<0.01),甘油三酯(TG)和IgM的含量显著上升(P<0.05),免疫球蛋白A(IgA)含量极显著上升(P<0.01)。【结论】在饲粮中添加屎肠球菌8296可改善断奶仔猪生长性能、提高仔猪对营养物质的消化吸收能力,增强免疫力;添加剂量为0.3%时效果更显著。

【Objective】Effects of Enterococcus faecium 8296 on the growth,nutrient digestibility,and serum biochemistry of weaned piglets were studied.【Method】Sixty 21-day-old,weaned,Duroc×Landrace×Yorkshire-crossbred piglets were randomly divided into 3 groups with 5 replicates per group and 4 piglets per replicate.The groups were fed with either a basal diet as control,the basal diet with 0.1%addition of E.faecium(EF1)or the basal diet with 0.3%addition of E.faecium(EF2)for 30 d.Growth performance,apparent nutrient digestibility,and serum biochemical indices of the piglets during the testing period were determined for analysis.【Result】①The piglets in the EF1 group had a significant increase on the average daily weight gain(ADG)(P<0.05)and a significant reduction on the feed to gain(F/G)ratio(P<0.05)over control.The piglets in EF2 increased significantly on ADG(P<0.01)and on average daily feed intake(ADFI)(P<0.05),while decreased significantly on F/G(P<0.01)as compared to control.②The apparent digestibility on ether extract(EE)and calcium(Ca)of the EF2 piglets was significantly higher than control(P<0.05),and that on phosphorus(P)extremely significantly higher than control(P<0.01).③The aspartate aminotransferase(AST)activity in serum of the EF1 piglets was significantly lower than that of control(P<0.01),but the serum immunoglobulin M(IgM)content was significantly higher than that of control(P<0.05).The EF2 piglets had the serum globulin(GLO),P and IgG significantly(P<0.05)and AST activity extremely significantly lower than those of control(P<0.01).The serum triglycerides(TG)and immunoglobulin M(IgM)of the EF2 piglets were significantly(P<0.05)and the serum immunoglobulin A(IgA)was extremely significantly higher than those of control(P<0.01).【Conclusion】A diet supplemented with 0.3%of E.faecium 8296 appeared to significantly enhance the growth,nutrient digestibility,and immunity of the weaned piglets.