Using estrous synchronization protocols efficacy in cows with anovulatory ovarian condition

The paper presents the results of research aimed at studying the effectiveness of synchronization protocols with the use of various drugs in cows with ovarian hypofunction. The objectives of research included the study of the ultrasonographic picture of the ovaries, changes in the level of progesterone and the reproductive function of cows. Experimental studies were carried out at FGBNU FANCA PZ "Komsomolskoye" (the department of the Federal Altai Research Center of Agro-Biotechnologies) in the Pavlovsky District of the Altai Region. A control and 2 experimental groups of cows with anovulatory ovaries were formed, 7 heads in each group. Cows in the control group received therapy according to the standard protocol. In the first experimental group, the Ovsynch synchronization protocol was used with the additional administration of Progestamag. In the second experimental group, the SIDR preparation was added to the Ovsynch protocol. Ultrasonographic studies of the reproductive system of cows and blood sampling to measure the level of progesterone were carried out: before the start of the experiment, on the 4th, 7th and 9th day of the experiment. As a result of experimental studies, it was found that the restoration of ovarian activity of the ovaries occurred on average in 36.9 %, both in experimental cows and animals in the control group. The highest efficiency of the use of synchronization schemes was established in the second experimental group, where the total fertility rate was higher by 9.3 and 3.6 % than in the animals of the control and first experimental groups.