摘要
研究出生年份、出生类型、出生季节和出生性别等非遗传因素对海南黑山羊初生重的影响。初步结果表明,海南黑山羊母羊胎产羔数为1~3羔的比例分别为58.7%、38.9%、2.4%;公羔与母羔之比为0.98∶1;羔羊初生重逐年提高;出生年份、出生类型和出生性别对羔羊初生重都有极显著的影响(p<0.01);出生季节对羔羊的初生重无显著的影响(p>0.05)。分析的4个非遗传因素的两两互作作用中,只有出生季节与出生类型的互作作用对羔羊的出生重无显著的影响(p>0.05),其余的对羔羊初生重都有极显著的影响(p<0.01);3因素和4因素互作作用对羔羊初生重都有极显著的影响(p<0.01)。
The impact of non-genetic factors such as birth year, birth type, birth season and birth sex on the birth weight of Hainan black goats was studied from 2001 to 2003. In the study, a total number of 545 litters including 783 kidlets were analyzed. The statistical analyses indicated that the proportion of 1 to 3 lambs per litter was 58.7%, 38.9% and 2.4% respectively. The ratio of male kidlets and female kidlets were 0.98 : 1. The action of birth years, birth types and birth sex on kidlets' birth weight were significant (p〈0.01) . The action of birth seasons was not significant (p〉0.05) . The interaction between two factors of 4 non-genetic factors analyzed on kidlets' birth weight was not significant (p〉0.05) , the interaction of the other factors on kidlets" birth weight was significant (p〈0.01) . The interaction of the third factor and fourth factor on kidlets' birth weight were significant (p〈0.01) .
出处
《华南热带农业大学学报》
2006年第2期10-13,共4页
Journal of South China University of Tropical Agriculture
关键词
海南黑山羊
初生重
非遗传因素
Hainan black goats birth weight non-genetic factors