国家农业行业标准《黄羽肉鸡营养需要量》技术解析

文章简要介绍了国家农业行业标准《黄羽肉鸡营养需要量》中黄羽肉鸡及其种用母鸡的定义与分类、主要技术内容及其确定依据和主要技术创新,旨在为该标准的推广实施提供参考。

Modern Ecological Chicken Raising and Its Research Progress

Modern ecological breeding has the characteristics of protecting the ecological environment,health,nutrition,delicious,and so on.In the ecological breeding of traditional breeding chicken,using non antibiotic breeding,traditional Chinese medicine and other breeding technologies can not only obtain green,non-harmful and safe food products,but also reduce the cost of farmers and provide breeding efficiency This is a sustainable development path.This paper gave a brief overview of this field.

祖代肉种鸡B系与D系生产性能和繁殖性能差异性研究

该文收集某种鸡场祖代肉种鸡养殖一线相关生产数据,总结分析了祖代肉种鸡B系与D系生产性能和繁殖性能差异性。结果显示:在产蛋性能方面,B系种母鸡开产时间比D系晚3周,B系种母鸡开产时体重比D系重820 g。B系种母鸡28~58周平均产蛋率46.0%,只均产蛋数104个,而D系种母鸡25~66周平均产蛋率70.4%,只均产蛋数207个;在死淘率方面,B系种母鸡产蛋期死淘率比D系种母鸡高0.65个百分点;在繁殖性能方面,B系种母鸡种蛋合格率比D系种母鸡低5.27%, B系种母鸡只受精蛋数为87个,明显少于D系种母鸡的185个,B系种母鸡受精率比D系种母鸡约低1.7个百分点,健雏率接近,B系种母鸡提供的雏鸡数为80只,明显低于D系种母鸡的172只。可见,B系种母鸡综合繁殖能力约为D系的一半。