酵母培养物对断奶仔猪生长性能、粪便菌群和血液指标的影响

发布时间：2018-04-19 17:45

本文选题：酵母培养物 + 仔猪　；参考：《中国畜牧杂志》2017年06期

【摘要】：本试验旨在研究日粮中添加酵母培养物对断奶仔猪生长性能、腹泻率、粪便微生物菌群数量和血液指标的影响。选取144头体重为(7.46±0.52)kg、健康的杜×长×大三元杂交断奶仔猪,随机分配到对照组(饲喂基础日粮)和3个不同添加水平的酵母培养物组(添加量分别为0.25%、0.50%和0.75%),每个处理6个重复(圈),每个重复6头仔猪。试验期为28 d。结果表明:随着日粮中酵母培养物添加量的增加,显著改善了试验结束时仔猪的末重(线性,P0.05),提高了在试验15~28 d仔猪的平均日增重和采食量(线性,P0.05)以及在试验全期的日增重和采食量(线性和二次,P0.05);不同添加水平的酵母培养物组均有效改善了仔猪不同阶段的腹泻发生率,增加了粪便中乳酸杆菌的数量(线性和二次,P0.05),减少大肠杆菌数(线性,P0.05);同时,降低了血液中尿素氮的水平(线性,P0.05)。综上所述,日粮中添加酵母培养物能够显著提高断奶仔猪的生长性能,降低腹泻发生率,并改善肠道微生态区系和血液生化指标,其中0.50%的添加效果最好。
[Abstract]:The purpose of this experiment was to study the effects of yeast culture on growth performance, diarrhea rate, fecal microflora and blood index of weaned piglets.144 weanling piglets with a body weight of 7.46 卤0.52 kg were selected.They were randomly assigned to the control group (fed basal diet) and three yeast culture groups with different supplementation levels (0.250.50% and 0.75% respectively).The experimental period is 28 days.The results showed that: with the increase of yeast culture in diet,The average daily gain and feed intake of piglets at the end of the experiment (linear P0. 05) and the average daily gain and feed intake (linear P0. 05) of piglets at 1528 days were significantly improved, and the daily gain and intake (linear and secondary) of piglets during the whole trial period (linear and quadratic P0. 05) were improved significantly. Different water was added to the piglets.The incidence of diarrhea in different stages of piglets was significantly improved in the yeast culture group.The number of lactobacillus in feces was increased (linear and secondary P 0.05), the number of Escherichia coli was decreased (P 0.05), and the level of urea nitrogen in blood was decreased (P 0.05).To sum up, dietary yeast culture could significantly improve the growth performance of weaned piglets, reduce the incidence of diarrhea, and improve intestinal microecological flora and blood biochemical index, among which 0.50% of the supplementation effect was the best.
【作者单位】：中南民族大学生命科学学院;北京中农弘科生物技术有限公司;廊坊市农业局;中国农业大学动物科技学院;
【基金】：中南民族大学横向合作项目(HZY17001) 北京市科技型中小企业促进专项项目(Z16010101463)
【分类号】：S828.5

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