RELATIONSHIP OF THE HOLSTEIN CATTLE SKIN HISTOLOGICAL STRUCTURE WITH DAIRY PRODUCTIVITY IN CONDITIONS OF INDUSTRIAL TECHNOLOGY

The purpose of researches is increase of milk productivity of Holstein cattle. The study was conducted on the basis of the dairy farm teaching and experimental farm «Kuban» of Krasnodar on cows-heifers of Holstein Black-and-White suit. The experimental group of cows were formed by animals belonging to the lines of Reflection Sovering, Viskonsin Admiral Back Led, Vis Backing Idea. Selection of animals into groups was carried out by random selection-which, by the groups-analogues. The first group (control) included animals belonging to the line Reflection Sovering 0198998, the second group (experimental) – line Wisconsin Admiral Buck Led 697789, the third group (experimental) – line Vis Backing Ideal 1013415. Comprehensive comparative study of the productivity and interior features of Holstein cattle of different breed lines was conducted. Histological examination of the cows skin of the experimental groups pathological changes of its structure were not detected. While well defined three components: epidermis, dermis, subcutaneous fat and muscle tissue. The dependence between the depth of hair follicles and productivity of the animal was shown. The minimum depth of the hair follicles is associated with potentially high productivity of animals. The higher productivity and expediency of the use of animals line Vis Backing Ideal in the modern industrial production of milk was proven. The obtained results complement the available data on the Holstein breed, and will allow professionals to make the right choice when breeding Holstein cattle.

breed, productivity, epidermis, glands, Holstein, dairy.