BOAR EFFECT INFLUENCE ON GILTS ESTRUAL REACTION

Induction of synchronised estrus in prepubertal gilts by the sexually mature boar contact is a phenomenon known as "boar effect". This effect is used for more efficient estrus detection in sexually mature (cyclic) gilts. The best results of application of "boar effect" are achieved if the stimulation is performed by direct contact between gilts and a sexually mature boar, at least two times a day every 12 hours. This paper presents the results of foreign and domestic authors on the "boar effect" application in terms of successful induction of synchronized estrus in prepubertal gilts and estrus detection in sexually mature gilts.