【摘要】 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)。更多还原

【Abstract】 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,更多还原