АЛЕЛЬНИЙ ПОЛІМОРФІЗМ ГЕНА BOLA–DRB3.2 В ЗВ’ЯЗКУ З ТИПАМИ ВИВІДНОЇ СИСТЕМИ ВИМЕНІ ТА МАСТИТАМИ КОРІВ УКРАЇНСЬКОЇ ЧОРНО–РЯБОЇ МОЛОЧНОЇ ПОРОДИ

The results comparing the two types of markers associated with susceptibility (by resistance) cows to mastitis presented in the article. Previous studies indicated 2 markers. There are allele gene BOLA–DRB3.2 and placer or magistral type of excretory ducts udder. The study was conducted by identifying spectrum allele's and types of excretory ducts udder of cows in 47 Ukrainian Black Pied dairy breed. Some of the animals (28 caw) have in the genotype «informative» alleles that indicate association with mastitis or resistance to the disease. Susceptible cows to the disease often have a placer type (half of the animals). Healthy cows have oftener magistral type of main excretory system (35.7%). With magistral type have genotype 9 cows «positive» alleles (32.1%); 11 animals with placer type have only «negative»alleles (39.3%). Comparing the presence of two types of markers in healthy and susceptible animals found two predominant choices:– healthy animals have the oftener magistral type of excretory system of the udder, and at least one allele associated with resistance to mastitis (9 cases);– in diseased animals have the oftener placer type of excretory system and at least one allele associated with susceptibility to mastitis (11 cases).The high incidence of these options indicates that there are natural connections between the type of excretory ducts udder, by alleles BoLA–DRB3.2 and mastitis.