摘要
本研究资料取自金华猪场 1979— 1999年金华猪的繁殖性能生产记录。测定金华猪 ,外来品种猪大约克夏、长白、杜洛克、汉普夏 ,以及金华猪与外来品种猪杂交所产的 2 35 5头仔猪的生长性状。综合考虑各性状的各种固定效应 ,并建立各性状的固定效应模型 ,对其进行方差分析 ,计算各性状的最小二乘均数 (LSM) ,对影响较大的固定效应在各观察水平上的LSM进行分析与比较。固定效应方差分析结果表明 :年份、季节、品种、同窝仔猪数、胎次等固定效应对初生重影响显著 (P <0 .0 5 )或极显著 (P <0 .0 1)。年份和同窝仔猪数对 2 0日龄重的影响显著 (P <0 .0 5 )。品种、年份、胎次对 6 0日龄重的影响显著或极显著。
The production record of reproductive performance of Jinhua swine from Jinhua swine farm during 1979 to 1999 were used to study.The growth traits of 2 355 piglets.which were progeny derived from different breeds' hybridization such as Jinhua swine,Large Yorkshire,Duroc,Hampshire were recorded.All fixed effects of each trait was synthetically considerated all fixed effects model of each trait and variance analysis were made and the least square mean (LSM) of each trait was calculated also.The LSM under different levels of the fixed effects which played key role in the studied traits were analysed and compared.The results of variance analysis of the fixed effects were as follows:Year,season,breed,litter size,parity had highly significant (P<0.01) or signicicant (P<0.05)effects on PBW .year and litter size had significant (P<0.05) effects on PWFC.Breed,year,farity had significant (P<0.05) or highly significant (P<0.01)effects on PWW.
出处
《青海畜牧兽医杂志》
2003年第4期10-12,18,共4页
Chinese Qinghai Journal of Animal and Veterinary Sciences
