摘要
对山西黑猪1～13胎总计1029窝母猪的繁殖性能用 Q 型群聚类法进行了分类。其结果表明,山西黑猪的不同胎次应分为三类;1胎、2胎、3胎以上。并且发现,3胎以上的偶数胎较相邻的奇数胎的繁殖性能为商。这种"波浪式"的繁殖规律是否为山西黑猪所特有可否改变尚有待进一步研究。
The Performances of breeding of the farrows from the first to the 13th of total 1029 Litters of Shanxi black pig were classified by the method of Q-type grouping.Shanxi black pig were farrows were classified into 3 types-the first, the second and the third or after the third farrows.It was found that the breeding performances were higher in even numbered farrows than the following odd numbered farrows,whether wavy Law of performance belongs to the shan- xi Black Pig only or not,and can it be changed or not is a problem to be study further.
