【摘要】 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。更多还原

【Abstract】 This article collects relevant production data on the front line of ancestral broiler breeding in a certain chicken farm,summarizes and analyzes the differences in production and reproductive performance between the B and D broiler breeding. The results showed that in terms of laying performance, B-line broiler breeding hens started laying 3 weeks later than D-line, and B-line broiler breeding hens weighed 820 g heavier than D-line when they started laying.The average egg laying rate of B-line broiler breeding hens from 28 to 58 weeks was 46.0%, with an average egg laying of 104 per hen, while the average egg laying rate of D-line broiler breeding hens from 25 to 66 weeks was 70.4%, with an average egg laying of 207 per hen. In terms of mortality rate,the mortality rate of B-line broiler breeding hens during egg laying was 0.65 percentage points greater than that of D-line broiler hens; In terms of reproductive performance, the qualified egg rate of B-line broiler breeding hens was 5.27% lower than that of D-line. The number of fertilized eggs in B-line broiler breeding hens was 87, significantly less than 185 eggs laid by D-line. The fertilization rate of B-line broiler breeding hens was about 1.7 percentage points lighter than that of D-line, and the healthy chick rate of different hens was similar. The number of chicks provided by B-line broiler breeding hens was 80, significantly lower than172 chicks provided by D-line. Conclusion: The comprehensive reproductive ability of B-line broiler breeding hens was about half of that of D-line broiler breeding hens.更多还原