Shchepetilnikov Y. Hygiene estimation of abiotic agents influence on productive and interior indices of lactative cows.

Influence of abiotic agents to lactative cows' ration for their productivity, morphologic and biochemic blood indices, humoral and cellular protection of natural resistance ihave been studied in the thesis. In stall housing condition of cows their diet with different supplements e. g. humate sodium conduced to increase immune globulin in the blood, BPHR, PASB, LASB, rose the hematopoiesis activization, improved the gynecological condition. Stimulation of milk productivity and cows interior indices influenced the daily feeding with bevilat supplement that conduced yield increase, humoral and cellular indices of natural resistance, decreased the terms of secundines separation, increased service and insemination index have been noticed. Lactative cows keeping in micro-stock (20-25 heads) in comparison with the amount (45-50 heads) conduced their fast adaptation to the overfalls of low temperatures, high dampness, enforced the immune status, antibacterial serum activity and milk productivity have been investigated.