动物杂种优势利用及其预测方法

杂种优势因具有提高两个不同亲本的遗传组成杂交所产后代的生产性能、生活力和抗逆性等特点,被广泛地运用在动植物杂交育种中。杂种优势利用率越高,种畜产生的价值越高,其后代产生的额外利润就越大。因此,杂种优势的利用率是广大育种工作者所关注的一项重要内容。杂种优势利用率的评估则依赖于对种畜杂种优势大小的预测。本文主要从杂种优势利用和杂种优势预测方法2个方面对已有的研究进行综述,并探讨有关杂种优势预测准确度提高的方法,以期对相关的研究提供一定的参考和帮助。

Utilization of Animal Heterosis and Its Prediction Methods

Heterosis was widely applied in animal and plant crossbreeding because of its ability to improve the production performance, viability and resistance of the offspring produced by two parents with different genetic composition. The higher the utilization rate of heterosis, the higher the value is generated by breeding animals, and the greater the additional profit was generated by their offspring. Therefore, the utilization rate of heterosis was an important content which the majority of breeders pay more attention to. The evaluation of heterosis utilization rate depended on the prediction of heterosis of breeding stock. This article mainly reviewed the existing researches from the two aspects, heterosis utilization and heterosis prediction methods, and discussed methods for improving the accuracy of heterosis prediction, in order to provide certain reference and help for related research.