中欧猪合成系杂交经济效益预测

ECONOMIC BENEFIT PREDICTION OF DIFFERENT CROSSBREEDING SYSTEMS USING A SINO-EUROPEANS PIG COMPOSITE LINE

中国地方猪种自1979年首次出口至今已有20多年历史,其明显的优缺点也同时被中外养猪专家所肯定,接着便是怎么开发利用这些高产优良品种资源。本项研究试图采用模拟的方法研究含梅山猪遗传基因的合成系和不同品种杂交以后的经济效益趋势,其中根据合成系在杂交体系中的位置划为三类共12个杂交组合。结果显示,在二元杂交体系中,合成系作为外祖父时的杂交效果最好。而在三元杂交体系中,合成系作为曾外祖父时的效果则最好。本文报道的结果是在引用了一些假设和参数的基础上得到的,这些假设和参数的选择均是可以讨论的。

It has been more than 20 years since the first export of Chinese pig breeds in 1979. The advantages and disadvantages of their performance were affirmed. Then the problem was how to exploit and use these prolific breeds. The economic benefits in the crossbreeding system using a Sino-European pig composite line containing the Meishan pig gene were investigated through the simulation methods in this study. Three crossbreeding types and 12 crossbreeding systems were sculled according to the component of composite line in the crossbreeding system. The results showed that the economic profit was the best when the composite line was used as the component of maternal grandsire in the crossbreed of two-way and as the component of maternal grand grandsire in the crossbreed of three way. The results in this paper were based upon a number of hypotheses and parameters, which might be discussed.