泛农花猪繁殖性状遗传参数的初步估测

本文对泛农花猪8头公猪及其44窝后代的若干繁殖性状表型参数和遗传参数,进行了初步估计,其结果如下:1.1982年的平均乳头数13.68个,总产仔数11.14头,产活仔数10.42头,初生个体重1.18公斤,初生窝重12.17公斤,断奶个体重18.15公斤,断奶窝重156.49公斤,断奶仔数8.57头。2.乳头数、总产仔数、产活仔数、初生个体重、初生窝重、断奶个体重和断奶仔数的遗传力各为0.23、0.18、0.34、0.87、0.75、0.11、0.69。3.产活仔数与初生窝重呈强正相关;初生个体重与断奶个体重和初生窝重与断奶仔数呈中等正相关;初生个体重与初生窝重和断奶仔数,以及产活仔数与断奶仔数均呈弱正相关。

Preliminary Estimation of Some Genetic Parameters about the Reproductive Traits in Fannong Spotted Swine

The phenotypic parameters and the genetic parameters about the reproductive traits of the 8 stock boars and their 44 litter progenies in Fannong Spotted Swine have been estimated preliminarily,and the results have been shown as follows. 1,In 1982,the average phenotypic data were:teat number 13.68,total pigs per litter at birth 11.14,living pigs per litter at birth 10.42,litter size at weaning 8.57,pig wt.at birth 1.18 Kg,pig wt.at weaning 18.15 Kg,litter wt.at birth 12.17 Kg,weaning wt.of litter 156.49 Kg. 2,The heritabilities of some reproductive traits were:teat number 0.23,total pigs per litter at birth 0.18,living pigs per litter at birth 0.34,litter size at weaning 0.69,pig wt.at birth 0.87,pig wt.at weaning 0.11,litter wt.at birth 0.75. 3,The living pigs per litter at birth and the litter wt.at birth appear to be strong positive correlation;The pig wt.at birth and the pig wt.at weaning, the weaning wt.of litter and the litter size at weaning appear to be medium positive correlation;The pig wt.at birth and the litter wt.at birth,the living pigs per litter at birth and the litter size at weaning appear to be weak positive correlation.