Determination of the timing of ovulation in female dogs

Abstract

Intensive development of breeding dogs in Russia and abroad, set new tasks for veterinarians. Planning mating with the definition of the time of ovulation - the key elements in breeding dogs. The main reason for unsuccessful breeding in healthy bitches with a normal cycle is the lack of precise methods for determining ovulation. At the moment, there are many different methods for determining the duration of ovulation. The method of cytological examination of vaginal smears is quite simple and inexpensive, which allows you to diagnose follicular cysts, vaginitis, vaginal tumors; predict the timing of delivery; determine the need to interrupt unwanted pregnancy in bitches. Determining the level of progesterone in the blood is an expensive and time-consuming method. The analysis on progesterone does not allow to determine, when exactly there was ovulation. With the development of purulent endometritis, the level of progesterone will be at a sufficiently high level, and owners often take the allocation for estrus. The most optimal method for determining the duration of ovulation in females is a complex one, consisting of determining the stage of the sexual cycle with the help of vaginal cytology, together with monitoring the level of progesterone in the blood serum. Thus, in 67% of the females of the 3rd experimental group, successful breeding was carried out. And the rest 33% diagnosed diestrus and anestrus, which allowed in the early stages to avoid unnecessary research.