Improvement of Black-and-White Holstein Stud Bulls Efficient Use in the Herd of Bryansk Region Stud Farm “Krasnyy Oktyabr”

Abstract

The article presents results of Holstein black-and-white stud bulls in high-productive herd of Bryansk Region Stud Farm “Krasnyy Oktyabr’”, notes that the highest effect of daughters’ productiveness is achieved from the use of stud bulls of American and Canadian selection.

Keywords

• cows
• bulls
• genotype
• milk
• productivity
• selection
• efficiency
• progeny
• daughters