Androgen steroids as an aid to the detection of oestrus in pig artificial insemination
| Autor: | R.L.S. Patterson, D.R. Melrose, H.C.B. Reed |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
medicine.medical_specialty
Time Factors BOAR medicine.drug_class Swine medicine.medical_treatment Biology Insemination Pheromones Steroid Andrology Sexual Behavior Animal Estrus Pregnancy Internal medicine medicine Animals Hydroxysteroids Insemination Artificial Estrous cycle Aerosols General Veterinary Artificial insemination Androgen Ketosteroids Positive response Endocrinology Fertility Negative response Androgens Androstenes Female |
| Zdroj: | The British veterinary journal. 130(1) |
| ISSN: | 0007-1935 |
| Popis: | SUMMARY The effect of aerosols containing six related androgen steroids, either singly or in combination, were compared by observing the reaction to the "back pressure" test of pigs presented for insemination. All tests were carried out on pigs not kept in the vicinity of a boar and which had given an initial negative response to back pressure. The new steroid formulations were compared with sprays containing 5α-androst-16-en-3-one. None was found to be significantly more effective in eliciting a standing reaction, although androst-4, 16-dien-3-one and 5β-androst-16-en-3-one gave comparable results. The fertility of pigs inseminated after giving a positive response to steroid treatment was significantly better than that of pigs which did not give a positive response but which were nevertheless inseminated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|