日粮中添加酵母培养物对肉仔鸡生长性能、肉品质和肠道菌群的影响

发布时间：2018-03-13 22:34

本文选题：肉鸡　切入点：酵母培养物　出处：《中国畜牧兽医》2017年06期 　论文类型：期刊论文

【摘要】：试验旨在研究日粮中添加不同水平酵母培养物对肉仔鸡生长性能、肉品质和肠道菌群的影响。选用432只1日龄、初始体重为(41.73±0.15)g的AA商品代肉仔鸡公雏,随机分为4个处理组(分别在基础日粮中添加0、0.1%、0.2%和0.3%的酵母培养物),每组6个重复,每个重复18只鸡。试验期42d,分为1~21和22~42d两个阶段,试验期间记录采食量、体重和死淘率,试验结束时每个重复选择1只与平均体重接近的肉仔鸡空腹12h后进行屠宰,测定其屠宰性能和肠道微生物数量。结果显示,与对照组相比,日粮中添加0.2%和0.3%酵母培养物能够显著提高肉仔鸡42d的体重和试验全期平均日增重(P0.05)。且当添加量为0.2%时,能显著提高肉仔鸡22~42d平均日增重(P0.05),显著降低料重比(P0.05);显著提高试验全期平均日增重和平均日采食量(P0.05),显著降低试验全期料重比(P0.05)。同时,添加酵母培养物还可显著降低鸡肉的滴水损失和大肠杆菌数量(P0.05),并显著增加盲肠双歧杆菌数量(P0.05)。综上所述,肉仔鸡日粮中添加0.2%酵母培养物的效果最佳,能够显著提高肉鸡生长性能,提高肌肉的系水力,改善其肌肉品质。同时,还能有效增加肉鸡盲肠中有益菌双歧杆菌数量和减少有害菌大肠杆菌数量。
[Abstract]:The purpose of the experiment was to study the effects of yeast culture on growth performance, meat quality and intestinal microflora of 432 broiler broilers of 1 day old, with an initial weight of 41.73 卤0.15g, and the effect of dietary yeast culture on the growth performance, quality and intestinal flora of broiler broilers, and the effects of yeast culture on the growth performance, quality and intestinal flora of broiler broilers were studied. They were randomly divided into 4 treatment groups (0 0. 1% and 0.3%% yeast culture were added to the basal diet respectively, each group had 6 replicates, each of 18 chickens). The trial period was 42 days, which was divided into two stages: 1, 21 and 22? 42 days. The intake, body weight and death rate of scouring were recorded during the experiment. At the end of the experiment, one broiler was slaughtered on an empty stomach 12 hours after repeated selection, and the slaughter performance and intestinal microorganism quantity were measured. The results showed that compared with the control group, one broiler was slaughtered at the end of the experiment. Dietary supplementation of 0.2% and 0.3% yeast cultures significantly increased the body weight of broilers for 42 days and the average daily gain of P0.05 for the whole trial period. The average daily gain (ADG) and average daily feed intake (ADFI) were significantly increased and the average daily gain (ADG) and average daily feed intake (ADFI) of the whole trial period were significantly increased, and the total feed / weight ratio (P0.05N) was significantly decreased during the whole period of the experiment, and the average daily gain (ADG) and the average daily feed intake (ADFI) of the broilers during the whole trial period were significantly increased. The addition of yeast culture also significantly reduced the loss of water and the number of Escherichia coli in chicken, and significantly increased the number of bifidobacterium cecum (P0.05). In conclusion, the effect of adding 0.2% yeast culture to the diet of broilers was the best. At the same time, it can increase the number of beneficial bacteria bifidobacterium and reduce the number of harmful bacteria Escherichia coli in cecum of broiler.
【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;
【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】：S831.5

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