一、知识聚焦杂交选择一直是改良家畜遗传性状的主要途径,但随着现代生物技术的飞速发展,传统杂交选择法的各种缺陷日益明显,而以现代生物技术为基础的各种新型动物育种方法却日益显示出其强大的生 I. Focus on knowledge Hybridization selection has always been the main way to improve the genetic traits of livestock. However, with the rapid development of modern biotechnology, the defects of the traditional hybridization selection method have become increasingly evident. However, various new animal breeding programs based on modern biotechnology Methods have increasingly shown their strong students