Age variability of mammary gland histostructure in dairy and non-dairy animals of different breeds and origin

Increase in milk production and improvement of milk quality must be addressed, along with of paratypic factors, through further researches of breast morphology and physiology. These studies are targeted not only at its morphological and functional characterization, but also at establishing basis for changing the body's activities and improvement of dairy animals. For most dairy breeds in the process of breeding almost reached the biological threshold of productivity. In addition, with the development of highly mechanized and automated technologies for milk production, the requirements for the selection of animals for adaptation to such conditions, in particular for the state of the udder, have increased. Therefore, an additional reserve can be the improvement of dairy cattle and improve the quality of milk on the basis of in-depth studies of the morphological, functional characteristics and physiology of the breast. The most informative data are presented on the structure and function of the udder in species with high initial milk yield and high quality indicators in comparison to the most common breeds of cattle...