Effect of treatment with Prolan or with a GnRH superactive analog on the sexual function of sows after weaning.
On a large, closed pig farm using artificial insemination (AI), 29 sows were treated with Prolan S-öl injection (Bayer, FRG) and 31 sows with a GnRH superactive analog (Ovurelin, D-Phe6-GnRH-EA, Reanal, Hungary) 48 h after weaning. The effect of treatment on the sows' sexual function was monitored by serum progesterone radioimmunoassay (RIA). The conception rate in the control group (36 sows) was 69.4%. In the groups treated with Prolan and Ovurelin it was 79.3 and 71%, respectively. The use of Prolan S-öl injection markedly reduced the number of acyclic sows and of those having an irregular oestrous cycle. Treatment with the GnRH analog inhibited the manifestation of weaning-induced heat; subsequently, however, it induced a regular cycle in 30 out of the 31 sows treated.
Szabó
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I
Agricultural Combine of Mezöhegyes, Mezöhegyes, Hungary.
Antal
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T
Tóth
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I
Faredin
I
I
Seprödi
J
J
Teplán
I
I
D000818:Animals; D006063:Chorionic Gonadotropin / Q000494:pharmacology*; D004338:Drug Combinations; D004958:Estradiol / Q000494:pharmacology*; D004971:Estrus / Q000187:drug effects; D005260:Female; D005306:Fertilization / Q000187:drug effects*; D007987:Gonadotropin-Releasing Hormone / Q000031:analogs & derivatives* / Q000494:pharmacology; D011247:Pregnancy; D013552:Swine / Q000502:physiology*
D006063:Chorionic Gonadotropin; D004338:Drug Combinations; C062312:ovurelin; D007987:Gonadotropin-Releasing Hormone; D004958:Estradiol