Trokhymenko V. The improvement of cows' reproductive ability owing to the administration of the preparation of metabolic and neurotropic action in the dry period.

Thesis for a Candidate's degree in agricultural Science, in specialty 03.00.20 - Biotechnology. - The National University of Bioresources and Nature Management of the Cabinet of Ministers of Ukraine, Kyiv, 2012. The thesis presents the results of the investigation into the possibility of cows' reproductive ability improvement through the administration of "Glutam 1M", the preparation of metabolic and neurotropic action. It has been established that hypodermic injection of glutam 1M in the course of 3 days, beginning with the 265th and 270th day of gestation, causes shortening of the gestation period by 2 and 1,1 days respectively. Besides, the pregnancy rate after the first insemination increases by 42,8 % (p<0,05) and 36,7 %, the service period shortens by 38,9 (p<0.001) and 20,3 (p<0,01) days, the insemination index being lowered by35 % (p<0,05) and 37 % (p<0,01) respectively. A biotechnological method of the improvement of cows' reproductive ability through the administration of biologically active preparation "Glutam 1M" at the end of the dry period has been developed. The essence of the above method lies in the following: cows are injected with "Glutam 1M" in the last decade of December, in January or in February, beginning with any day of gestation within the time- period of 260 - 275 days. Such treatment of cows has promoted to the fact that more cows calve twice a year. It has become possible due to the shortening of the gestation term, regenerative period and service period by 2,7 (p<0,05), 8,8, 13,4 days respectively. The insemination index has been lowered by 21 %. Key words: biologically active preparation "Glutam 1M", cows, dry period, insemination index, service period, reproductive ability.