QUALITY EVALUATION OF MIKHAILOVSKY TYPE BULLS OF YAROSLAVL BREED WITH DIFFERENT BLOOD PERCENTAGE IN GENOTYPE
Evaluation of Michaylovskiy type bulls with different Holstein blood percentage on breeding categories is performed with method of comparison with Yaroslavl purebred peers (similar in age and season of calving), and superior genotypes. We set the high breeding value of producers with 3\4 and 7\8 blood of improving breed, genetically determined differences and promising branches to create new plant breeding lines.