[Estimation of breeding value and high-producing cows selection by their traits]
2006
Koronets, I.N. | Klimets, N.V. | Shemetovets, Zh.l. | Pesotskij, N.I.,The National Academy of Sciences, Minsk (Belarus). Institute of Animal Production, Zhodino
Now in selection of dairy cattle all greater value is got with the integrated estimation of animals in view of some signs. Till now the basic signs of dairy cattle selection in our republic are the content of fat in milk and milk yield. In the countries of the world with the developed dairy cattle breeding (Canada, America, Germany, etc.) ranging and selection of animals is carried out on the basis of complex index of estimation of the breeding value, representing total estimation of such parameters, as milk yield, dairy fat, dairy fiber, the ex-terrier, milk ejections speed, reproductive and other signs. New method of breeding value estimation of high-producing cows by their productive traits and selection traits has been established. It was recommended to use animals with complex index for bull mothers of 110-125% and for embryo donor cows of 125%
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Эту запись предоставил National Academy of Sciences of Belarus