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养猪生产中,提高猪的增长速度和母猪的繁殖性能是追求利益最大化的重要途径,但种猪的生长性状和繁殖性状受到品种、胎次、产仔季节等固定效应的影响。试验根据全国生猪遗传改良计划中种猪生产性能测定以及遗传评估的方法,通过建立固定效应模型,利用来源于天津市某两家国家核心种猪育种场的生长性能测定和繁殖记录数据,对影响大白猪、长白猪的繁殖性状和生长性状的品种、性别、胎次、产仔季节等固定效应进行研究分析。
Pig production, raising the growth rate of pigs and sows reproductive performance is the pursuit of maximization of the interests of the important ways, but the growth traits and breeding pigs by species, parity, litter season and other fixed effects. According to the test of pig performance and genetic evaluation in the national pig genetic improvement program, the fixed effect model was used to measure the growth performance and reproduction data from the core pig breeding farms in two countries in Tianjin. , Landrace pig reproductive traits and growth traits, sex, parity, litter season and other fixed effects of research and analysis.