FIELD: veterinary science, animal science.
SUBSTANCE: the suggested preparation as progestogen contains the following compound of total formula in efficient amount: 
where R - a substitute containing either aryl or heteryl radical. The above-mentioned compound should be introduced for vertebrates in efficient quantity. The present innovation enables to stimulate estrus in animals and increase synchronism of its manifestation, regulate both hyper- and hypofunction of ovaries and, also, decrease sexual activity in female and male vertebrates, moreover, suppression of sexual cyclic recurrence is of reversible nature.
EFFECT: higher efficiency of regulation.
10 cl, 6 ex, 4 tbl
