低聚果糖替代金霉素对断奶仔猪生长性能及血清生化指标的影响

Effect of fructooligosaccharides replacing chloramphenicol on growth performance and serum biochemical indexes of weaned piglets

试验旨在探究低聚果糖替代金霉素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。选取48头断奶仔猪,随机分为3组,对照组仔猪饲喂基础饲粮,试验组分别在基础饲粮中添加25 mg/kg金霉素和5000 mg/kg低聚果糖,每组8个重复,每个重复2头仔猪。试验期28 d。结果显示,与对照组相比,1~14、1~28 d,金霉素组和低聚果糖组仔猪末重和平均日增重显著提高(P<0.05),腹泻率和料重比显著降低(P<0.05)。1~28 d,金霉素组和低聚果糖组仔猪对粗蛋白和总能的消化率显著高于对照组(P<0.05)。14 d时,与对照组相比,金霉素组和低聚果糖组仔猪血清免疫球蛋白G、免疫球蛋白A的含量显著提高(P<0.05),总超氧化物歧化酶活性和血清总抗氧化能力显著提高(P<0.05),丙二醛含量显著降低(P<0.05)。28 d时,与对照组相比,金霉素组和低聚果糖组仔猪血清免疫球蛋白A含量显著提高(P<0.05),丙二醛含量显著降低(P<0.05),低聚果糖组仔猪血清免疫球蛋白G含量、总超氧化物歧化酶活性显著提高(P<0.05)。研究表明,饲粮中添加低聚果糖可增强仔猪抗氧化水平、提高免疫力、降低腹泻率、提高消化率,进而提高生长性能,生产中可采用低聚果糖替代金霉素。

The experiment was to study the effect of fructooligosaccharides replacing chloramphenicol on growth performance,apparent digestibility of nutrients and serum biochemical indexes of weaned piglets.A total of 48 weaned piglets were randomly divided into three groups,piglets in control group were fed with basal diet,and the experimental groups were supplemented with 25 mg/kg aureomycin and 5000 mg/kg fructooligosaccharide in basic diet,respectively,with eight replicates in each group and two piglets in each replicate.The experiment lasted for 28 d.The results showed that compared with control group,the final weight and average daily gain of piglets in aureomycin and fructooligosaccharide groups on 1~14,1~28 d were significantly increased(P<0.05),and the diarrhea rate and feed to gain ratio were significantly decreased(P<0.05).On 1~28 d,the digestibility of crude protein and total energy of piglets in aureomycin group and fructooligosaccharide group was significantly increased(P<0.05).On 14 d,serum immunoglobulin G and immunoglobulin A content of piglets in aureomycin group and fructooligosaccharide group were significantly increased(P<0.05),total superoxide dismutase activity and total antioxidant capacity of serum were significantly increased(P<0.05),and malondialdehyde content was significantly decreased(P<0.05).On 28 d,compared with control group,the serum immunoglobulin A content and malondialdehyde content of piglets in aureomycin group and fructooligosaccharide group were significantly increased(P<0.05),and serum immunoglobulin G content and total superoxide dismutase activity in fructooligosaccharide group were significantly increased(P<0.05).The study indicates that dietary fructooligosaccharide can enhance antioxidant level,improve immunity,reduce diarrhea rate,improve digestibility,and then improve growth performance of piglets.Fructooligosaccharide can be used to replace auretein in production.