酸性蛋白酶、微生态制剂和抗生素对肉鸡生长性能的影响研究%Study on Acid Protease,Probiotics and Antibiotics in Production Performances of Broiler
河南省科学院生物研究所有限责任公司 河南省瑞特利生物技术有限公司 广州智龙生物科技有限公司
2012-04-12
酸性蛋白酶 微生态制剂 抗生素 肉鸡 生长性能 肠道菌群
选取1日龄健康从肉鸡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(1~21 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).
