迪卡猪配套系杂种优势分析及利用

HYBRID RATE ANALYSIS AND UTILIZING OF DEKALBE PIG

从某迪卡猪场两年的产仔记录中，分别统计了A、B、C、E、F每个纯系和AB、CD、EF、ABCD杂交组合中母猪的繁殖性状成绩，分析了不同杂交组合的杂种优势率，结果表明:五元杂交组合具有较高的杂种优势率,这是迪卡猪商品代具有很高生产性能的原因,并对杂交体系中副产品的利用问题进行了一些讨论。

A total of 1216 Dekable pig litters was used analyze the reproductive performance from A，B， C， E， F five pure lines and AB，CD，EF，ABCD hybrid lines, the litter size, numbers of weaning, and litter weight of weanlings’ hybrid rate was calculated ,it were 27.11%、29.44%、35.09% respectively, The results showed that five lines hybrid have very high hybrid rate and it was the mainly reason that Dekable pig have very high production performance. as the same time how to make use of the by-product was discussed.