自动断喙与免疫注射系统对雏鸡生产性能的影响

Effect of Beak Treatment on Production Performance of Laying Hens

商品代蛋鸡养殖中，断喙不仅可以减少甚至避免出现啄癖、抓伤，而且还可以显著提高饲料利用率及鸡苗均匀度，从而使其具有良好的生产性能。笔者以晓明禽业黄羊滩养殖基地四区二期1#、2#、3#、4#舍，共计98000只雏鸡为研究对象，每栋24500只，1#、2#为第1组，3#、4#为第2组，组内分别予以人工及红外断喙处理，相同饲养管理条件下，统计鸡苗累计死淘、体重增长、采食量、均匀度、26d及31d喙长数据。统计分析发现，红外断喙与人工断喙组饲料累计消耗间存在显著性差异（u1=2．2633，P=0．0223〈0．05；u2=-2．1923，P=-0．0175〈0．05），其26d与31d喙长分布区间短且集中，更接近于标准正态分布曲线。

Effect of beak treatment on the laying Performance in laying hens were studied. Ninety-eight thousand commercial layers of Hy-Line brown at the age of thirty-five and thirty-six were divided into two groups. Group one and two were also divided into two. One was treated by artificial, the other was treated by infrared. Within the same management, counting ratio death,weight gain,feed intake, uniformity and beak long of twenty-six days and thirty-one days. with analysis, we found that there are significant difference between ar- tificial and infrared groups （u1=2.2633 ,P=0.0223〈0.05, u2=-2.1923, P=0.0175〈0.05 ）. meanwhile, 26 and 31 days later, compared to artificial group, infrared group＇ s beak almost emerged as normal distribution.