猪窝产活仔数与初生窝重及断奶窝重的相关分析

Correlation analysis among number of littermate, weight at birth,weight at ablactating in Landrace Pigs

测定西北农林科技大学教学试验农场种猪场健康、繁殖正常的147头长白母猪的窝产活仔猪数(X)、初生窝重(Y1)、断奶窝重(Y2),分别按照窝产活仔猪数分组进行方差分析和性状间的相关回归分析.结果表明:组间差异均呈极显著(P＜0.01),初生窝重的多重比较在窝产活仔猪数为8头和9头,10头和11头,11头和12头之间差异均不显著,其余各组之间差异显著或极显著;断奶窝重在窝产活仔猪数为10、11、12头之间差异均不显著,其余各组之间差异均呈显著或极显著.对窝产活仔猪数(X)与初生窝重(Y1)、断奶窝重(Y2)进行相关分析,其相关系数均达到极显著(P＜0.01)水平.经分析得出窝产活仔猪数在10～12头之间可取得最佳经济效益.

Data for this study were collected from 147 sows in pig trial farm of Northwest A&F University. Numbers of littermate( X ),weight at birth( Y1 ),weight at ablactating ( Y2 ) were measured. The weight at birth ( y1 ) and weigth at ablactating ( Y2 ) were very significant difference ( P <0. 01) among groups of different numbers of littermate respectively. The correlation coefficients were calculated and all of them were significance ( P <0. 01) . 10-12 numbers of littermate( X ) commendable get the best economic performance.