Acyclicity and dyscyclicity in mares.
Two trotter stud farms were visited on Mondays, Wednesdays, and Fridays during 1972 and 1973. A total of 356 mares were bored on these farms during these breeding seasons. There were 194 nursing, 113 barren, and 49 maiden mares. Of the 356 mares, 78 (21.9%) had functional disorders of the ovaries at one time or another. The functional disorders consisted of: 27 anoestrous mares after early embryonic death, 20 with low ovarian activity, 19 with multifollicular ovaries, and 12 mares with persistent corpora lutea. The following therapies were used: (a) 1000 I.U. PMSG i.v. + 10 mg stilboestrol i.m. Of 13 treated mares, 3 (23.1%) came into heat and all 3 became pregnant in the first oestrus following treatment. (b) Intra-uterine infusion of 0.5 - 1 liter physiological saline solution. Of the 26 treated mares, 19 (73.1%) came into oestrus and 14 (53.9%) became pregnant in the first oestrus following treatment. (c) Chlormadinone acetate, 10 mg. orally for 17 days. Of 38 treated mares, 35 (92.4%) came into oestrus and 22 (57.9%) became pregnant in the first oestrus following treatment. This therapy was also used in early spring (February-March) in 15 mares, of which 10 (66.7%) came into oestrus and 4 (26.7%) became pregant in the first oestrus following treatment. (d) Prostaglandin F2alpha, 25 mg intra-uterine. Of the 9 mares treated, al came into oestrus and 8 (88.9%) became pregnant in the first oestrus following treatment. (e) Curettage of the uterus. In this treatment group, none of the 5 treated mares showed improvement. Altogether, 54.7% of the treated mares became pregnant in the first oestrus after treatment, and 76.9% of the mares became pregnant after one of more breedings.
D000780:Anestrus; D000818:Animals; D002980:Climate; D002996:Clomiphene / Q000627:therapeutic use; D003338:Corpus Luteum; D020964:Embryo Loss / Q000662:veterinary; D004967:Estrogens / Q000627:therapeutic use; D005260:Female; D006064:Gonadotropins, Equine / Q000627:therapeutic use; D006734:Horse Diseases / Q000628:therapy*; D006736:Horses; D007247:Infertility, Female / Q000628:therapy / Q000662:veterinary; D010049:Ovarian Diseases / Q000628:therapy / Q000662:veterinary*; D011247:Pregnancy; D011460:Prostaglandins F / Q000627:therapeutic use; D012965:Sodium Chloride / Q000627:therapeutic use
D004967:Estrogens; D006064:Gonadotropins, Equine; D011460:Prostaglandins F; D002996:Clomiphene; D012965:Sodium Chloride