蛋重对孵化率和雏鸡生长的影响

三组不同蛋重比较试验的结果表明,白来航蛋鸡种蛋的最佳蛋重为61.4±2.19克,小蛋蛋重为45.6±2.75克,孵化率分别为93.45％和75.76％,两组间差异显著(P<0.05).蛋重对C组气室高度的影响明显地大于A组和B组(P<0.05)。蛋重与初生重相关极显著(P<0.01),初生重不同的雏鸡在相同条件下育雏4周,体重增加差异不显著(P>0.05)。

The Effect of Egg Size on the Hatchability of Fertile Eggs and the Growth of Chicks

The result of comparative experiments among 3egg groups with different size showed that the optimum egg size of fertile eggs of white Leghorn layers was 61.4±2.19g, and the egg size of small eggs was 45.6±2.75g. The hatchabrlities of these fertile eggs were 93.45％ and 75.7％ respectively(P<0.05). The effect of egg size on group C was more significant than that on group A and B in the height of air cell(P<0.05). The correlation between egg size and newborn weights was highly significant (P<0.01). The chicks with different newborn weights had no significant differences of weight gain(P<0.05)during 4 weeks of feeding under the same condition,