皖南土鸡快慢羽品系开产前体重对早期产蛋率的影响

Effects of Body Weight on Early Laying Rate in Fast and Slow Feathering Lines of Wannan Chicken

为探明开产前体重对皖南土鸡快、慢羽品系种鸡早期产蛋率的影响,本试验采用简单相关回归和典型相关法分析了皖南土鸡开产前20周龄体重与早期连续3个月产蛋率的相关性。研究结果表明,皖南土鸡快、慢羽品系开产前20周龄体重与早期产蛋率均呈正相关,其中慢羽系种鸡开产前20周龄体重维持在1201～1250g有利于开产蛋率和维持产蛋高峰率,而快羽系种鸡开产前20周龄体重维持在1151～1200g有利于开产蛋率和产蛋高峰率的维持。研究方法可以广泛用于各个品种开产前体重的计算。

Effect of body weight at 20 weeks of age on laying rate in the fast and slow feathering line of Wannan chickens was investigated in this experiment. Simple regression and canonical correlation was taken to analyze the correlation between body weight and laying rate. The results showed that body weight at 20 weeks of age positively correlated with laying rate. In the slow line,body weight at 1 201~1 250 g would be helpful for opening laying rate and laying peak maintaining. In the fast line, body weight at 1 151~1 200 g would facilitate the opening laying and laying peak maintaining. The methods used in this experiment could be wisely used in calculating body weight before egg laying in different breeds.