羽速性状对番鸭生活力和繁殖性能的影响

快、慢羽番鸭育雏率和产蛋期存活率差异不显（p＞0．05），但慢羽公番鸭育成率（100％）显（p＜0．05）高于快羽公番鸭（83．33％）。快慢羽母番鸭性成熟日龄分别为167和164日；快、慢羽组12产蛋周平均日产蛋率分别为33．23％和46．93％，二差异显（p＜0．05）；两种羽型番鸭种蛋受精率、孵化率均无显性差异（p＞0．05）。

The Influence of Feathering Traits on Livability and Reproductive Performance of Muscovy Duck

The feathering traits had no significant effect on brooding rate and livability in laying period.But during brooded period the slow-feathering males had a higher (P<0.05)livability(100%)than fast-feathering males (83.33%).The age of puberty of females was 167 day in fast-feathering group and 164 day in slow-feathering group.There were no significant(P>0.05)differences in egg sizes between the two feathering types,but in the first 12 laying weeks,the slow-feathering group had significantly(P<0.01)higher egg production rate(46.93%)than the other group (33.23%).The fertility and hatching rate of fertilized eggs of fast-feathering groups (91.5% and 73.20%)were not different (P>0.05)from those of slow-feathering group (90.07% and 70.88%).