The objective of the work was to establish the effect of an ovaries hand massage on the reproductive activity and hormonal changes during winter anestrus and luteal phase of estrous in mares. The examinations were done on 10 mares (Polish pony) in January 1992 during winter anestrus and in August 1993 during luteal phase of estrous cycle (diestrus), divided into 2 groups: experimental and control. In the experimental group ovaries were massaged ever day for 30 sec. Sexual behavior of mares was checked every day with the help of a stalion, ovaries were examined per rectum and by USG. The level of progesterone and estradiol was determined every second day in venous blood (from the external jugular vein). It was found that ovarial massage did not significantly affect reproductive activity and hormonal activity of ovaries during winter anestrus. A possibility of shortening of estrus during reproductive season during the luteal phase of estrous (diestrus) was found.
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