Pylypchuk O. Rationale of biotechnological methods of the sows' reproductive ability stimulation

The thesis presents the results of research on improvement of the reproductive ability of sows by using neurotropic and metabolic chemicals Glutam 1M and Nanovulin-VRH. It had been established, that the use of biologically active Glutam 1M on the day 1-3 of the idle period increases the fertility by 20-28,6 %, polycarpousness and largecarpousness - at 1,3-1,9 heads and by 15,2-16,4%, respectively, with a reduced number of stillborn piglets in 3.5 times. And the use of Nanovulin-VRH on the 0-2 day of sexual cycle leads to a tendency to increase the fertility by 21.4%, polycarpousness by 2.2 pig, and largecarpousness by 13.4% and reduce of stillbirths per head. Feeding sows with Glutam 1M, regardless of their age, resulted in an increase in fertility, polycarpousness and largecarpousness by 18,8-30,7 %, at 0,5-2,6 heads compared to the control, and by 10,3-22,4 % respectively. The best result in increase of multi-fertility was obtained by feeding the chemical according to the scheme to the females after the 4 th farrowing - it contributed to an increase of polycarpousness at 2.6 heads and a decrease of 1.1 stillborn piglets. It had been found that the usage of Glutam 1M on the 1-3 day of the idle period leads to an increase of income from the sale of pigs by 74.6 %, and the fore the profitability of pork production increases by 3.7 %. Keywords: reproductive ability, neurotropic and metabolic chemicals, Glutam 1M, Nanovulin-VRH, sow, fertility, polycarpousness, largecarpousness, idle period, piglets.