益生菌制剂对生长育肥猪生产性能的影响研究

Effect of probiotic on growth performance in growing-finishing pig

为了研究益生菌制剂替代抗生素对生长育肥猪生产性能的影响，选取45kg左右的PIC生长猪30头，随机均分为A、B和C3组，A组饲喂无抗基础日粮，B、C组分别在基础日粮中添加抗生素和益生菌制剂。试验分为45～70kg（31d）和70～90kg（24d）2个阶段。结果表明：在45～70kg阶段，B、C组猪的平均日增重和平均日采食量分别比A组高出6．17％（P〉0．05）、1．23％（P〉0．05）和11．94％（P〉0．05）、12．94％（P〉0．05）；在70～90kg阶段，B、C组猪的平均日增重和平均日采食量分别比A组高出16．46％（P〉0．05）、22．78％（P〈0．05）和16．38％（P〈0．05）、15．13％（P〈0．05），平均料肉比比A组分别降低了5．96％（P〉0．05）和10．03％（P〉0．05）；在整个试验阶段，B、C二组猪在平均日增重和平均日采食量方面较A组分别提高了11．1l％（P〉0．05）、12．35％（P〉0．05）和14．29％（P〉0．05）、14．29％（P〉0．05），在料肉比方面非常接近。试验结果说明，抗生素和益生菌制剂都能有效地改善生长育肥猪的生产性能，且益生菌制剂能有效替代抗生素。

The effect of probiotic on growth performance in growing-finishing pig was conducted with 30 PIC pigs （45 kg）, which were randomly divided into three groups （A, B and C）, supplemented with basal diet, basal diet ＋ antibiotic and basal diet ＋ probiotic, respectively. The trial divided into two parts （45-70 kg, 31 d; 70N90 kg, 24 d）. The results showed that in stage one, the ADG and ADFI in group B and C were greater than that in group A by 6.17%（P〉0.05）, 1.23%（P〉0.05） and 11.94%（P〉 0.05）, 12.94%（P〉0.05） respectively. In stage two, the ADG and ADFI in group B and C were greater than that in group A by 16.46%（P〉0.05）, 22.78%（P〈0.05） and 16.38%（P〈0.05）, 15.13%（P〈0.05） re spectively. The FCR in group B and C was lower than that in group A by 5.96%（P〉0.05） and 10.03% （P〉0.05）. In the whole trial period, the ADG and ADFI in group B and C were greater than that in group A by 11.11%（P〉0.05）, 12.35%（P〉0.05）and 14.29%（P〉0.05）, 14.29%（P〉0.05）respectively, and the FCR in these three groups were approximated. It is suggested that both antibiotic and probiotic could improve the growth performance of growing-finishing pig effectively, and the probiotic could be a viable alternative to antibiotic.