中国宁夏回族自治区科技厅周二公布,3只利用体细胞复制技术复制的高产长寿奶牛在灵武市出生,是中国首次采用该技术,对现存群体中终生产奶量高于100吨的优良荷斯坦奶牛个体,进行种质复原保存及良种繁育。
这些复制奶牛中首只是在去年12月30日诞下,其后又相继诞下2只。灵武市生产力促进中心主任吴大伟介绍称,首例体细胞复制优秀奶牛体格较大,经剖腹产出生。其体重56.7公斤,体高76厘米,体斜长113厘米,体形花色与体细胞供体奶牛完全一致。
灵武市近年聚焦打造“高端奶之乡”目标,并实施种子工程攻坚行动,计划今年胚胎牛移植1000头、出生500头,移植复制牛300头、出生30头,利用复制牛生产体外性控胚胎100枚,实现胚胎特别是高产复制牛批量繁育。
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