武定鸡快慢羽纯系及其杂种鸡早期肉用性能的测定

 用武定鸡快、慢羽两个纯系,以及以武慢羽为母本分别与武快羽和红布罗快羽为父本交配,测定快、慢羽对早期肉用性能的影响,结果:由同一来源分离出的快、慢羽纯系、公母混合试验组中,虽在1-90日龄生长速度和屠体重,快羽高于慢羽,但无显着差异.而在以武慢羽为母本的两个自别雌雄配套组合中,公母分开饲养,同一组合公母间的体重及屠体重虽有差异.但不显着.不同组合以及两个纯系间,不论公母,除屠宰率,全净膛率等相对数无显着差异外,都表现出以红布罗快羽为父本的组合.其活重和屠体重极显着地大于其它各组.初步证明以红布罗快羽为父系、武慢羽为母系、生产能自别雌雄接近土鸡毛色的肉仔鸡,是开发利用武农Ⅰ系的一条有效途径.

The Test of Early Meat Performance of the Fast and Slow Feathering Wuding Chicken and Their Hybrids

The correlation between feathering speed and early meat performance was tested in the pure lines of the fast and slow feathering Wuding chickens and two auto-sexing crosses of which maternal lines were the slow feathering Wuding chickens and paternal lines were fast feathering Redbroes and Wuding chickens,The results showed that no significant differences were observed in the growing speed and dressed weight between two mixed sex groups of the fast and slow feathering pure lines of the Wuding chickens from one to ninty days old.In the two crosses,there were no significant differences in the live weight and dressed weight between the males and femals of the same cross combination;however,except the dressing percentage and the percentage of eviscerated yield,the significant differences existed in the live weight and dressed weight between the cross combination the paternal line of which was fast feathering Redbroes and any other groups. This reveals that it is possible for us to produce auto-sexing meat-type chickens the feather colour of which is close to the locals by using the fast feathering Redbrose as paternal line and the slow feathering Wuding chickens as mathernal line. This result may be used effectively for the development and utilization of the Wuding line Ⅰ.