影响外来猪种早期生长的固定效应

Study on factors affecting early growth rate of foreign pig breeds

取杭州种猪试验场1996～2001年长白猪、杜洛克和大约克的产仔哺育记录的原始档案,共收集6965窝.在建立固定效应模型的基础上,对仔猪早期生长(初生个重、20d个重、60d个重)的资料进行方差分析和最小二乘平均数估计.结果表明:胎次、年份、季节、品种和同窝仔猪数对仔猪早期生长的影响均达极显著水平(p<0.01).

A total number of 6965 litter records of Landrace, Duroc and Yorkshire pigs collected at Hangzhou Pig Breeding Farm from 1996 to 2001 were analysed On the basis of fixed effect model, the least squares means of the body weight at birth, at 20 days and at 60 days were estimated The result indicated that the influence of parity, year, season, breed and litter size on the traits of early growth rate were highly significant (p<001)