【摘要】 本试验旨在研究益生菌与饲粮组合效应对生长育肥期苏淮猪生长性能、胃肠道pH和肉品质的影响。选择健康、胎次相近、体重接近((30.29±3.00)kg)的生长育肥期苏淮猪210头,根据3种不同的饲粮处理将猪群分成3组:基础饲粮组(饲喂基础饲粮),益生菌与饲粮组合组(饲喂基础饲粮+益生菌)和抗生素与饲粮组合组(饲喂基础饲粮+抗生素),每组设5个重复,每个重复14头猪。试验期为98d。结果表明:(1)益生菌与饲粮组合组苏淮猪的平均日增重和平均日采食量分别比基础饲粮组提高13.30%(P<0.01)和9.04%(P<0.05),腹泻率降低70.29%(P<0.01);与抗生素与饲粮组合组相比,平均日增重低7.48%(P<0.01),料重比高10.56%(P<0.05),而平均日采食量和腹泻率之间无显著差异(P>0.05)。抗生素与饲粮组合组苏淮猪的平均日增重比基础饲粮组高22.46%(P<0.01),料重比和腹泻率分别低13.04%(P<0.01)和67.36%(P<0.01)。(2)3个饲粮处理组间胃肠道pH的差异未达到显著水平(P>0.05)。(3)益生菌与饲粮组合组和基础饲粮组苏淮猪的屠宰率分别比抗生素与饲粮组合组高1.72%和1.96%,滴水损失分别比抗生素与饲粮组合组低40.42%(P<0.05)和36.17%(P<0.05),同时肌内水分含量分别比抗生素与饲粮组合组低7.28%(P<0.05)和2.60%;益生菌与饲粮组合组苏淮猪肌内脂肪含量分别比基础饲粮组和抗生素与饲粮组合组高43.15%和29.81%,但未达到显著水平(P>0.05)。以上试验结果表明,益生菌与饲粮组合效应能够有效提高生长育肥期苏淮猪的生长性能,同时还能降低肌肉滴水损失和提高肌内脂肪含量,有助于改善苏淮猪的肌肉品质。更多还原

【Abstract】 This study was conducted to investigate the effects of diets supplemented with probiotic on growth performance,gastrointestinal pH and meat quality of Suhuai pigs.Two hundred and ten healthy Suhuai pigs were collected by similar parity and similar body weight((30.29±3.00)kg),then randomly divided into 3groups(with 5replications per group and 14 pigs in each repli-cation)according to 3different kinds of diets processing:basal diet group(basal diet),probiotic group(basal diet with probiotic),and antibiotic group(basal diet with antibiotic).The experiment lasted 98 days.The results showed that:(1)Suhuai pigs in probiotic group had 13.30%higher average daily gain(ADG)(P<0.01)and 9.04%higher average daily feed intake(ADFI)(P<0.05),and 70.29%lower diarrhea rate(P<0.01)than basal diet group;compared with antibiotic group,Suhuai pigs in probiotic group had 7.48%lower ADG(P<0.01)and 10.56%higher average daily feed intake/average daily gain(F/G)(P<0.05),and no significant differences in ADFI and diarrhea rate(P>0.05).Antibiotic group had 22.46% higher ADG(P<0.01),13.04%lower F/G(P<0.01)and 67.36%lower diarrhea rate(P<0.01)than basal diet group.(2)There were no significant differences among the 3groups(P>0.05)in gastrointestinal pH.(3)Probiotic group and basal diet group had 1.72% and 1.96% higher dressing rate,40.42%and 36.17%lower drip loss(P<0.05),7.28%(P<0.05)and 2.60%lower muscle moisture content than antibiotic group.Suhuai pigs in probiotic group had 43.15%and 29.81%higher IMF than basal diet group and antibiotic group,but not significant(P>0.05).This study indicated that diets supplemented probiotics could improve the growth performance effectively,at the same time,decrease the drip loss,improve the IMF content,and improve meat quality of Suhuai pigs.更多还原