无抗发酵饲料对生长育肥猪生产性能、血液生化指标和肉品质的影响
Effects of complex probiotics fermented feed without antibiotic on growth performance,plasma biochemical parameters，immune function and meat quality in growing-finishing pig

选择18 kg左右断奶保育仔猪60头，随机分成2个处理，每处理设3个重复，每重复有10头猪，进行为期154 d的生长育肥期饲养试验，2个处理组日粮分别为含抗生素基础日粮对照组以及无抗发酵日粮试验组(无抗发酵饲料添加量为20%)，研究对生长肥育中大猪生产性能、血液指标、免疫指标和肉品质的影响。试验结果表明：在基础日粮中添加20％无抗发酵饲料效果优于对照组。与对照组相比，在日粮中添加20％无抗发酵饲料，平均日采食量提高5.86%,平均日增重提高10.89%，料重比降低4.38%（P＜0.05）；20％无抗发酵饲料添加试验组的血清谷草转氨酶、尿素、白蛋白和白球比例都显著低于对照组；而试验组的血清碱性磷酸酶、葡萄糖、球蛋白和IgG则显著高于对照组；试验处理组屠宰猪肉的45 min pH、2 h pH、红度值(a*)和肌内脂肪显著高于对照组；试验处理组屠宰猪肉的滴水损失和剪切力显著低于对照组。本试验研究表明,无抗发酵饲料能提高生长育肥猪的生产性能，增强免疫能力，提高屠宰猪肉肉品质。
A total of 60 weaned piglets with an average weight of 18 kg were randomly divided into 2 treatments,with 3 replicates per treatment and 10 pigs per replicate.The control group was fed with basal diet supplemented with antibiotics and the experimental group was fed with 20% fermented feed without antibiotic for 154 days,to study the effects of complex probiotics fermented feed without antibiotic on growth performance,blood parameters,immune index and meat quality in growing-finishing pigs.The results showed that the performance of the experimental group fed with 20% fermented feed without antibiotic was better than the control group.Compared with the control group,the average daily feed intake increased by 5.86%,average daily gain increased by 10.89% and feed conversion ratio decreased by 4.38% (P＜0.05) in the experimental group.The content of serum aspartate aminotransferase,serum urea,serum albumin and ration of albumin with globulin in the experimental group were significantly lower (P＜0.05),while the content of serum alkaline phosphatase,glucose,globulin and IgG in the experimental group were significantly higher than that of the control group (P＜0.05).In addition,the slaughtered pork 45 min pH,2 h pH,the red value (a*) and intramuscular fat of the experimental group were significantly higher (P＜0.05),while the value of slaughtered pork drip loss and shear force of the experimental group were significantly lower than that of the control group (P＜0.05).In conclusion,the fermented feed without antibiotic can improve the production performance,enhance immunity and improve meat quality in growing-finishing pigs.