益生素对肉仔鸡生产性能的影响

Effect of Probiotics on Performance of Broiler

选用240只AA肉仔鸡,随机分成4组,对照组饲喂基础日粮,试验组在基础日粮中分别添加杆菌肽锌(20mg/kg)、2%和3%的益生素,比较试验鸡的生产性能。结果表明:日粮中添加2%和3%的益生素可显著提高肉鸡的日增重、饲料效率、成活率、屠宰率(<0.05);益生素可替代抗生素杆菌肽锌提高肉鸡生产性能。

Choose 240 AA-type broilers, and divide them into four groups randomly. Contrasting group is fed with basic proportion grain ration and the groups for experiment are fed with the basic proportion grain ration with bacitracin zinc （240mg/kg） 2% and 3% probiotics, and then compare the performance of the broilers for experiment. The result of the research shows： adding 2% and 3% probiotics to the basic proportion grain ration can increase the increasing weight per day, the productiveness of fodder, the rate of survival, the rate of slaughter （p 〈 0.05）, and the antibiotical peptide zinc bacillus can be replaced by probiotics, probiotics can increase performance of Broiler.