犏牛是牦牛与黄牛杂交的一代种。分为犏牛（公）和犏乳牛（母）具有明显杂交优势，肉、乳生产能力、役用能力接近于牦牛。产奶量一般3.5～5.5公斤/日，饲料补充好，可提高2～7公斤左右，但奶质跟牦牛相比较差。在一定条件下，产肉量比牦牛要高，肉质也差于牦牛。
黄牛和牦牛远缘杂交后代犏牛雄性不育是牦牛杂交改良中的一大难题。
The infertility of cattle-yak, which is the hybrid offspring of cattle and yak, is a difficult problem in cross-breeding and improvement of yak.
根据犏牛雄性不育的研究结果，提出了犏牛雄性不育的多基因遗传不平衡假说。
The polygenic inheritance unbalance hypothesis about male sterility of yak cattle is suggested on the base of the research results about male sterility of yak cattle.
主要家畜、家禽主要有绵羊、山羊、牦牛、黄牛、犏牛、马、驴、骡、藏鸡、藏猪等。
The agriculture of Tibet is based on animal husbandry, with major livestock and fowl including sheep, goat, yak, yellow cat, dzo, horse, donkey, mule , Tibet chicken, and Tibet pig.
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