出生类型对湖羊羔羊体重变化的影响

Effect of Birth Type on Body Weight Developments of Lambs in Hu Sheep

目的:研究出生类型及性别对湖羊羔羊体重生长发育规律的影响。方法:将133只湖羊羔羊按照出生类型(单羔、双羔、三羔、四羔)和性别的不同,测定羔羊初生重、二月龄重、四月龄重及六月龄重,分别计算累积生长、绝对生长和相对生长。结果表明,公、母羔的累积生长、绝对生长和相对生长在不同出生类型下存在不同程度的差异;在同一出生类型的公羔和母羔之间的累积生长、绝对生长和相对生长也存在差异,且各阶段公羔羊的体重大于母羔羊。结论:出生类型及性别对湖羊羔羊体重生长发育规律有明显影响。

The objective is to study the effects of birth type and gender on the pattern of body weight of lambs in Hu sheep. In this paper, 133 herd of lamb in Hu sheep were collected according to birth type （ single lamb, twins, three and four lambs） and gender to calculate cumulative, absolute and relative growth through measuring their weight of birth, two months, four months and six months age respectively. There existed different extent vafiance in cumulative, absolute and relative growth of different birth types of ram lambs and ewes respectively, and so did of the same birth type of ram lambs and ewes. Besides, the body weight of ram lambs kept more than that of ewes in different stages. Conclusion is drew that birth type and gender both had obvious effects on development rules of body weight of lambs in Hu sheep.