肉用型樱桃谷种鸭强制换羽研究

将同批3122只肉用型樱桃谷父母代种鸭分4组,于60周龄和66周龄分别都采用2种方法进行强制换羽。结果表明:采用方法2进行强制换羽组的生产性能(第二周期产蛋数和产蛋率)显著高于采用方法1进行强制换羽组的生产性能(P<0.05);采用方法1进行强制换羽组的死亡率为2.15%,而采用方法2的组的死亡率为0.4%,差异极显著(P<0.01);60周龄种鸭进行强制换羽组的生产性能和经济效益都极显著高于66周龄种鸭进行强制换羽组的生产性能和经济效益(P<0.01),且60周龄种鸭采用方法2进行强制换羽组的总体经济效益比66周龄淘汰的经济效益高5.3%。

Research on Cherry Valley SM2 Parent Stock Forced Moulting

Cherry Valley SM2 parent stock flock consisted of 3 122 ducks of the same age was divided into four groups, which were forced to moult by two methods at 60 weeks and 66 weeks respectively. The results show that the performance (egg production during the second laying period) of the two groups forced to moult by Method 2 was superior remarkably to that of by Method 1 (P<0.05). The average mortality of the two groups forced to moult on the basis of Method 1 was 2.15%, and that of by Method 2 was 0.4%. Between the two, difference of the average mortality is ultra-remarkable (P<0.01). The performance and economic effect of the two groups forced to moult at 60 weeks was superior ultra-remarkably to that of at 66 weeks (P<0.01). The economic effect of the group forced to moult on the basis of Method 2 at 60 weeks was 5.3% more than that of this flock culled at 66 weeks.