ОСОБЕННОСТИ ЛАКТАЦИИ КОРОВ ЧЕРНО-ПЕСТРОЙ ПОРОДЫ РАЗНЫХ ГЕНОТИПОВ

2008 
The aim of this work is a comparative study of milk productivity as well as degrees of realization of purebred and Holstein - Friesian mixed Black-and-White (motley) cows genetic potential under different ways of keeping and quantity of milking in a milking department. It is established by training heifers to tether less keeping and double milking right away after calving.
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