摘要
选取1日龄健康AA肉鸡1200只,随机分成6组,分别饲喂在基础日粮中添加抗生素(作为对照组)及不同配比酸性蛋白酶与微生态制剂或抗生素(作为处理组).试验期为42 d,分为前期(1～21 d)和后期(22～42 d)两个阶段.结果表明:与抗生素对照组相比,第4组、第5组、第6组肉鸡体增重得到显著的提高,分别提高了15.6%、24%、16.3%(P<0.05),料重比分别降低了6.60%(P>0.05)、7.61%(P<0.05)、6.60%(P>0.05);各处理组能显著地增加空肠中乳酸菌数量(P<0.05),以添加0.01%酸性蛋白酶+0.005%微生态制剂效果最佳,其他各处理组之间乳酸菌数量差异不显著(P>0.05).
In this paper, 1200 1-day-old healthy AA broilers were randomly divided into six groups with 8 replicates each treatment and 25 per replicate. The basal diet consisted of corn and soybean feedstuffs with antibiotics was the control group, and the other 5 diets were added with different ratios of acid protease, and probiotics or antibiotics. The experiment lasted for 42 d, including early period（l^21 d）and later period （22~42 d）. The results showed that,compared with the control group,broiler body weight of Group 4, Group 5,Group 6 significantly increased 15.6%, 24%, 16.3% （P〈0.05）, and feed conversions decreased 6.60% （P〉0.05）, 7.61% （P〈0.05）, 6.60% （P〉 0.05） respectively. Each treatment group significantly increased the lactic acid bacteria number in jejunum, compared with control groups （P〈0.05）. The group with the addition of 0.01% acid protease and 0.005% probiotics was best,while the Lactobacillus numbers among other treatment groups were not significant （P〉0.05）.
出处
《河南科学》
2012年第4期447-450,共4页
Henan Science
基金
河南省科技攻关项目(0424240040)
关键词
酸性蛋白酶
微生态制剂
抗生素
肉鸡
生长性能
肠道菌群
acid protease
probiotics
antibiotics
broiler
production performance
intestinal microflora
