Comparison of aspiration and hormonal therapy for the treatment of ovarian cysts in cows.
Despite the variety of hormonal treating regimes used, a proportion of cows with cystic ovarian disease (COD) fail to be cured. The hypothesis of this study was that cyst aspiration would improve the curing rate and/or accelerate the resumption of ovarian activity in affected cows. In four groups of cows the following treatments were administered: Group A (n = 18) only cyst aspiration, Group AGP (n = 19) cyst aspiration and a combination of GnRH and PGF 2alpha , Group GP (n = 25) only GnRH and PGF 2alpha , and Group C (n = 15) untreated control. Cysts were aspirated without ultrasonographic guidance, using a new device. All cows from Group AGP responded to treatment, while 5.5% from Group A and 16% from Group GP remained anoestrous (P < 0.05). These refractory cases were re-treated with the AGP protocol and exhibited oestrus within 12.4 +/- 1.1 days. The interval from PGF 2alpha injection to oestrus was significantly reduced in cows treated with cyst aspiration. Until day 80 post partum (pp), 11 of the 15 untreated cows (73.3%) retained the initial cyst and remained anoestrous. It is concluded that persisting cases of COD can be treated by combining aspiration with a hormonal regime. The technique presented here has no complication for the cow, is efficient, easy, safe for the operator, and requires low-cost equipment.
Amiridis
Georgios S
GS
Clinic of Reproduction and Obstetrics, Veterinary Faculty, University of Thessaly, 224 Trikalon str. P.O. Box 199, 43100 Karditsa, Greece. gsamir@vet.uth.gr
D000818:Animals; D002064:Buserelin / Q000008:administration & dosage / Q000627:therapeutic use*; D002417:Cattle; D002418:Cattle Diseases / Q000628:therapy*; D015237:Dinoprost / Q000008:administration & dosage / Q000627:therapeutic use*; D004322:Drainage / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D005260:Female; D005300:Fertility Agents, Female / Q000008:administration & dosage / Q000627:therapeutic use; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists; D010048:Ovarian Cysts / Q000628:therapy / Q000662:veterinary*; D010120:Oxytocics / Q000008:administration & dosage / Q000627:therapeutic use
D005300:Fertility Agents, Female; D010120:Oxytocics; D007987:Gonadotropin-Releasing Hormone; D015237:Dinoprost; D002064:Buserelin