蛋重对拉萨白鸡种蛋孵化率和仔鸡生长发育的影响

Effects of Egg Weight on Hatching Rate and Growth and Development of Poussin with Lhasa White Chicken

为研究拉萨白鸡种蛋蛋重对孵化率和仔鸡生长发育的的影响,在相同孵化条件下,选用3世代47周龄拉萨白鸡种蛋,按蛋重分组进行孵化,计算孵化率、分析仔鸡的生长发育情况。结果表明:蛋重在>60 g时,受精蛋孵化率和入孵蛋孵化率均最高,分别为86.79%和85.19%;蛋重越大,雏鸡初生重越大,呈极显著正相关(r=0.940)且存在极显著差异(P<0.01);雏鸡初生重随蛋重的增加而显著增大,不同组别的雏鸡初生重表现出极显著差异(P<0.01)。蛋重与雏鸡初生重占入孵蛋重的百分比、8周龄体重、后代仔鸡平均日增重呈极显著正相关,相关系数分别为:0.940、0.177、0.177;雏鸡初生重与雏鸡初生重占入孵蛋重的百分比、8周龄体重、后代仔鸡平均日增重呈极显著正相关,相关系数分别为:0.074、0.171、0.171;雏鸡初生重占入孵蛋重的百分比与8周龄体重、后代仔鸡平均日增重呈极显著负相关,相关系数分别为:-0.173、-0.173;8周龄体重与后代仔鸡平均日增重呈极显著正相关,相关系数为1.000。本研究为拉萨白鸡良种高效扩繁在种蛋选择上提供了理论参考。

In order to study the effect of the egg weight of Lhasa white chicken on the hatching rate and the growth and development of its young,under the same incubation conditions,Lhasa white chicken eggs of the third generation and 47 weeks old were selected for hatching according to the egg weight.The hatching rate was calculated and the growth and development of chicks were analyzed.The results showed that when the weight of eggs was>60 g,the fertilization rate and incubation rate were the highest,respectively 86.79%and 85.19%.The larger of the egg weight,the larger of the birth weight of the chicks,showing the extremely significantly positive correlation(r=0.940)and the significant difference(P<0.01).The birth weight of chicks increased significantly with the increase of egg weight,and the primary weight of chicken in different groups showed the significant difference(P<0.01).The eggs weight among the percentage of birth weight in the eggs,the weight of 8 weeks and the daily weight gain of the offspring were extremely significantly Positive correlation,respectively of 0.940,0177 and 0.177.The birth weight of chicks among the percentage of birth weight in the eggs,the weight of 8 weeks and the daily weight gain of the offspring were extremely significantly positive correlation,respectively of 0.074,0.171 and 0.171.The percentage of birth weight in the eggs among the weight of 8 weeks and the daily weight gain of the offspring were extremely significantly negative correlation,respectively of-0.173 and-0.173.The weight of 8 weeks and the daily weight gain of the offspring was extremely significantly positive correlation,respectively of 1.000.This study provides a theoretical reference for the selection of better and more efficient breeding of Lhasa white chicken.