POLLED SIRES: MORE CHOICE THAN EVER

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POLLED SIRES: MORE CHOICE THAN EVER

机译：投票的地点：比以往更多的选择

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The lack of diverse bloodlines and high index sires has for a long time kept polled Holstein genetics as a niche market, both in the UK and internationally. The advent of young genomic sires has now brought new opportunities for breeders to incorporate polling into their herds. The genetics of 'polling' is relatively straightforward and controlled by one gene. The polled allele is dominant and so any animal carrying it will not have horns. DNA tested animals with two copies (homozygous) of the allele are coded POS in the UK and all their offspring will be polled. DNA tested animals with one polled allele (heterozygous) are labelled POC and at least half their progeny will be polled. Some polled animals do have small scurs, but these will not develop into horns.

机译：长期以来，由于缺乏多样化的血统和高指数的种马，长期以来，在英国和国际上，被调查的荷斯坦遗传学一直是利基市场。年轻的基因组公牛的出现为育种者带来了新的机会，可以将轮询纳入其种群。 “轮询”的遗传学相对简单，并且受一个基因控制。轮询的等位基因占优势，因此任何携带它的动物都不会有角。经过DNA测试的动物具有两个副本（纯合子）等位基因，在英国被编码为POS，并将对其所有后代进行轮询。经DNA测试的具有一个轮询等位基因（杂合子）的动物被标记为POC，并且将对其后代的至少一半进行轮询。一些被轮询的动物确实有小斑点，但它们不会发展成角。

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《The journal (Holstein UK)》 |2016年第4期|52-53|共2页
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2. Growth performance, and carcass and meat quality traits in progeny of Poll Nellore, Angus and Brahman sires under tropical conditions [J] . Pereira A. S. C., Baldi F., Sainz R. D., Animal Production Science . 2015,第10期

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POLLED SIRES: MORE CHOICE THAN EVER

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