益生菌制剂与抗生素的联合在规模化肉鸡生产中的应用

试验旨在研究益生茵制荆与抗生素的联合在肉鸡商品扬中的实际应用效果。为实验室研究转化实际生产提供参考。试验场共有8栋鸡舍，设两个处理组，每个处理组4个重复。每个重复18360只鸡，对照组饲喂基础日粮＋抗生素，试验组饲喂基础日粮＋抗生素＋益生茵制荆。益生茵添加量为每t水lOg，饲喂时间为42d。结果表明：益生茵制荆＋抗生素联合能够显著提高肉仔鸡5、6周龄末的体重、全期的平均日增重、饲料转化率（P〈0．05），而对各个阶段厦全期的死淘率并不显著；益生茼制剂＋抗生素的联合应用显著提高肉仔鸡的胸肌率（P〈0．05）。而对屠宰率、半净膛率、全净膛率、腿肌率均无显著的影响；益生茵制剂＋抗生素能够显著的增加肉仔鸡养殖的经济效益。鳍果提示．饮水中添加益生茵制剂＋抗生素能够促进肉仔鸡的生长。改善胴体的品质，提高经济效益。

Effect of Combined Application of Probiotics and Antibiotics on Large Scale Broilers Production

Effect of probiotics combination of antibiotics in the practical application of chicken producing,providing reference for actual production.The test is set up two groups randomly and four replicates in treatment, each replicate had 18360 chicken. Contrasting group is fed with basic proportion grain ration with antibiotics,the groups for experiment are fed with the basic proportion grain ration with antibiotics and proboscis in water, Probiotics are added into basic proportion grain ration in lOg/ton water,Test deadline is 42 days. The result of the research shows：The groups for experiment can increase significantly average weight of 5,6 week,the increasing weight per day and the productiveness of fodder in whole term （P 〈 0.05 ）,and no effeeting for the rate of slaughter each stage and in whole period.The groups for experiment can improve significantly the rate of chest muscle rate（P 〈 O.05）,but there are no significant influence in slaughter rate half net carcass rate,the whole net carcass rate and the leg muscle rate.The groups for experiment could dramatically increase economic benefits. The results indicated that the compatibility of prohiotics and antibiotics in drinking water can promote the growth of flesh chickens,improve the carcass quality, increase economic benefit.