最近生物技术也成了家畜的一个大难题，不仅仅是因为科隆牛：美国食品药品管理局正在酝酿一份议案，比方说，允许售卖基因改良鲑鱼那样的议案。
Biotech has also become a big issue for livestock lately, and not just because of cloned cattle: The FDA is mulling a proposal, for example, to allow sales of genetically modified salmon.
肌肉生长与肌肉品质性状的改良一直是家畜育种工作的主要目标之一，二者均属于多基因控制的数量性状。
Improvement of muscle growth and meat quality, quantitative traits both controlled by multigenes, is always one of the main goals for livestock genetics and breeding.
与纯种家畜杂交来改良（家畜）品质 v.intr。
To improve the quality of (livestock) by crossbreeding with purebred stock.
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