摘要
选择1日龄罗斯308(ROSS308)肉仔鸡240只,随机分为4个处理组,处理组1和2肉鸡日粮添加抗生素金霉素,处理组3和4替代抗生素添加枯草芽孢杆菌;处理组1和3肉鸡地面平养,处理组2和4采用笼养,试验期42d。结果显示,处理组4平均日增重、饲料增重比等指标显著优于处理组1(P<0.05),处理组2和3差异不显著(P>0.05)。日粮添加枯草芽孢杆菌显著提高了肉鸡对饲料粗蛋白质的表观利用率和血清白蛋白浓度,处理组4显著优于其他3个处理组(P<0.05)。试验证明,无论是地面平养还是笼养方式,枯草芽孢杆菌替代抗生素对改善肉鸡的生长性能都有良好效果,其作用机理主要是提高饲料蛋白质的营养消化和代谢利用率。
Two hundred and forty new born broilers（ROSS 308） were assigned to four experimental treatments （group 1 to 4）. Aureomycin was used in diets of group 1 and 2, and Bacillus Subtilis feed additive substituted aureomycin in diets of group 3 and 4. The broilers of group 1 and 3 were reared on the cement floor, and group 2 and 4 in cages. In the experimental period of 42 days, the average daily gain and feed efficiency（ratio of feed intake to body weight gain） of group 4 broilers were superior（P 0.05） to group 1, and those of group 2 and 3 broilers were no difference（P 0.05）. For apparent availability of crude protein and broiler serum albumin concentration, the group 4 wasthe highest（P 0.05） among all treatments. These findings proved that feed additive Bacillus Subtilis could improve broiler growth performance in both floor and cage rearing systems by enhancing the feed protein digestibility and utilization.
出处
《饲料博览》
2012年第10期1-6,共6页
Feed Review
基金
科技部科技人员服务企业行动项目(2009GJF30046)
云南省科技攻关项目(2008LA006)
云南省科技厅技术创新暨产业发展专项资金(2010HA055)
昆明市科技局项目(08G100112)
云南省创新型企业试点项目
关键词
肉鸡
枯草芽孢杆菌
笼养
地面平养
营养利用率
broiler
Bacillus Subtilis
cage feeding
floor feeding
nutrient utilization
