种鸡不同产蛋期对后代肉鸡生长性能的影响

Effect of Different Laying Age of Broiler Breeders on Growth Performance of Offspring

分别选用初产种鸡(27周龄)、产蛋高峰期种鸡(39周龄)、产蛋后期种鸡(55周龄)所产种蛋孵出的雏鸡进行饲养试验,以研究种鸡不同产蛋期对后代肉鸡生长性能的影响。结果表明:在1～21日龄,初产种鸡后代肉鸡生长性能低于高峰期和产蛋后期种鸡后代肉鸡;在22～42日龄,初产种鸡后代肉鸡表现出较快的生长速度;全程1～42d,种鸡产蛋期对后代肉鸡的出栏体重影响不显著(P>0.05),以初产种鸡后代肉鸡的料肉比最低(P<0.05)。

The effect of different age of broiler breeders （27,39,55weeks age）on offspring performance were studied in this paper. The results showed that broilers from 39 to 55 weeks old hens performed better between 1 and 21 days age than those from 27 weeks age hens. Conversely,between 22 and 42days age,broilers from hens 27weeks of age performed better than those from 39 to 55-week-age hens. In conclusion,between 1 and 42 days age,breeder age had no effect （P〉0.05）on the body weight of broilers at 42d,but FCR was reduced in broilers from 27weeks age hens compared to those from 39 to 55 weeks age（P〈0.05）.