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For estimation correction factors 21417 milk and fat lactation yields and 13164 protein yields of Black-White and holstein-friesian cows and crosses are used. Estimated factors for correction milk, fat and protein yields are related to age of cow at calving, season of calving and both. There are different correction factors for age and season of calving for different breeds and crosses and for different...
Proportional correction factors for prediction 305-days milk and fat yields based on short-term cumulated yields dependend on production level, calving season and length of calving period for Black-White and Holstein-Friesian cows and crosses are estimated. Production level affected to all correction factors for days of calving, but calving period and season of calving affected to correction factors...
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