Therapeutic efficacy of using estrous synchronization protocols in cows with ovarian cyst condition

The aim of research is to study the effectiveness of the therapeutic and synchronizing effects of the use of estrous cycle synchronization protocols in highly productive cows with ovarian cysts. Changes in the ultrasonographic picture of the ovaries in the dynamics of the implementation of synchronization protocols and therapy regimens, as well as the level of progesterone in cows, were studied. Experimental studies were carried out at PZ (the breeding farm) Komsomolskoye (the department of the Federal Altai Research Center of Agro-Biotechnologies) in the Pavlovskiy District of the Altai Region. One control and two experimental groups of cows with ovarian cysts were formed, 14 cows in each group. Animals of the control group received therapy according to the standard protocol. In the first experimental group, the Ovsynch synchronization protocol was used with additional administration of the SIDR preparation. In the second experimental group, together with the Ovsinh synchronization protocol, the drug Progestamag was used. As a result of experimental studies, it was found that the restoration of ovarian activity of the ovaries occurred on average in 50.0 % of both experimental cows and animals of the control group. The concentration of progesterone in the second experimental group on the 4th day of observation increased by 2.9 times and amounted to 47.85 nmol/l, by the 9th day it decreased to 15.88 nmol/l. The level of progesterone in the blood of cows in the control and first experimental groups of cows increased to 8.37-8.43 nmol/l by the 4th day and gradually decreased on the 9th day of observations to 4.25-5.43 nmol/l. The highest efficiency of the use of synchronization schemes was established in the first experimental group, where the indicator of total fertility is higher by 13.3 and 6.8 % than in the animals of the control and second experimental groups, respectively.