Androgen steroids as an aid to the detection of oestrus in pig artificial insemination.

摘要: SUMMARY The effect of aerosols containing six related androgen steroids, either singly or in combination, were compared by observing the reaction to "back pressure" test pigs presented for insemination. All tests carried out on not kept vicinity a boar and which had given an initial negative response back pressure. new steroid formulations with sprays 5α-androst-16-en-3-one. None was found be significantly more effective eliciting standing reaction, although androst-4, 16-dien-3-one 5β-androst-16-en-3-one gave comparable results. fertility inseminated after giving positive treatment better than that did give but nevertheless inseminated.