SAEVA Proceedings 2016 | Page 25

  Estrus Suppression 1851 1852 Mare: Pharmacological Manipulation of Reproduction 8. Jorgensen JS, Vivrette S, Correa M, Mansmann RA. Significance of the estrous cycle on athletic performance in mares. Proc Annu Conv Am Assoc Equine Practnr 1996; 42: 98– 100. 9. McDonnell SM. Evaluation and modification of mare behavior problems. In: Proceedings of the Annual Meeting of the Society for Theriogenology, 1993; pp. 185–9. 10. McDonnell S. Performance problems in mares. The Horse 2000;April : 61–70. 11. Hedberg Y, Dalin AM, Ohagen P, Holm KR, Kindahl H. Effect of oestrous-cycle stage on the response of mares in a novel object test and isolation test. Reprod Domest Anim 2005; 40: 480–8. 12. Pryor P, Tibary A. Management of estrus in the performance mare. Clin Tech Equine Pract 2005; 4: 197–209. 13. McDonnell SM. Is it psychological, physical, or both? Proc Annu Conv Am Assoc Equine Practnr 2005; 51: 231–8. 14. McDonnell SM. Oestrus cycle-related performance problems. J Equine Vet Sci 1997; 17:196. 15. Cox JH, DeBowes RM. Colic-like discomfort associated with ovulation in two mares. J Am Vet Med Assoc 1987; 191:1451– 2. 16. Hooper RN, Taylor TS, Varner DD, Blanchard TL. Effects of bilateral ovariectomy via colpotomy in mares: 23 cases (1984– 1990). J Am Vet Med Assoc 1993; 203:1043–6. 17. KammJL, HendricksonDA.Client’s perspectives on the effects of laparoscopic ovariectomy on equine behavioral and medical problems. J Equine Vet Sci 2007; 27: 435–8. 18. Loy RG, Swan SM. Effects of exogenous Progestagens on reproductive ph enomena in mares. J Anim Sci 1966; 25: 821–6. 19. Vanderwall DK, Marquardt JL, Woods GL. Use of a compounded long-acting progesterone formulation for equine pregnancy maintenance. J Equine Vet Sci 2007; 27: 62–6. 20. Hawkins DL, Neely DP, Stabenfeldt GH. Plasma progesterone concentrations derived from the administration of exogenous progesterone to ovariectomized mares. J Reprod Fertil Suppl 1979; 27: 211–16. 21. Squires EL, Stevens WB, McGlothlin DE, Pickett BW. Effect of an oral progestin on the estrous cycle and fertility of mares. J Anim Sci 1979; 49: 729–35. 22. WebelSK, SquiresEL.Control of the oestrous cycle in mares with altrenogest. J Reprod Fertil Suppl 1982; 32: 193–8. 23. Gee EK, DeLuca C, Stylski JL, McCue PM. Efficacy of medroxyprogesterone acetate in suppression of estrus in cycling mares. J Equine Vet Sci 2009; 29: 140–5. 24. McKinnon AO, Lescun TB, Walker JH, Vasey JR, Allen WR. The inability of some synthetic progestagens to maintain pregnancy in the mare. Equine Vet J 2000; 32: 83–5. 25. McKinnon AO, Tarrida Del Marmol Figueroa S, Nobelius AM, Hyland JH, Vasey JR. Failure of hydroxyprogesterone caproate to maintain pregnancy in ovariectomized mares. Equine Vet J 1993; 25:158–60. 26. Lo ́pez-Bayghen C, Zozaya H, Ocampo L, Brumbaugh GW, Sumano H. Melengestrol acetate as a tool for inducing early ovulation in transitional mares. Acta Veterinaria Hungarica 2008; 56: 125–31. 27. WiepzGJ, SquiresEL, ChapmanPL. Effectsofnorgestomet, altrenogest, and/or estradiol on follicular and hormonal characteristics of late transitional mares. Theriogenology 1988; 30:181–93. 28. McCue PM, Lemons SS, Squires EL, Vanderwall DK. Efficacy of synovex-S implants in suppression of estrus in the mare. J Equine Vet Sci 1997; 17: 327–9. 29. Scheffrahn NS, Wiseman BS, Vincent DL, Harrison PC, Kesler DJ. Reproductive hormone secretions in pony mares subsequent to ovulation control during late winter. Theriogenology 1982; 17: 571–85. 30. Nie GJ, Johnson KE, Braden TD, Wenzel JGW. Use of an intra-uterine glass ball protocol to extend luteal function in mares. J Equine Vet Sci 2003; 23: 266–73. 31. Rivera del Alamo MM, Reilas T, Kindahl H, Katila T. Mechanisms behind intrauterine device-induced luteal persistence in mares. Anim Reprod Sci 2008; 107:94–106. 32. Vander wall DK, Silvia WJ, Fitzgerald BP. Concentrations of oxytocin in the intercavernous sinus of mares during luteolysis: temporal relationship with concentrations of 13,14-dihydro-15-keto-prostaglandin F2α .JReprodFertil 1998; 112: 337–46. 33. Shand N, Irvine CHG, Turner JE, Alexander SL. A detailed study of hormonal profiles in mares at luteolysis. J Reprod Fertil Suppl 2000; 56: 271–9. 34. Betteridge KJ, Renard A, Goff AK. Uterine prostaglandin release relative to embryo collection, transfer procedures and maintenance of the corpus luteum. Equine Vet J 1985; Suppl. 3:25–33. 35. Goff AK, Pontbriand D, Sirois J. Oxytocin stimulation of plasma 15-keto-13,14-dihydro prostaglandin F-2α during the oestrous cycle and early pregnancy in the mare. J Re- prod Fertil Suppl 1987; 35:253–60. 36. Starbuck GR, Stout TA, Lamming GE, Allen WR, Flint AP. Endometrial oxytocin receptor and uterine prostaglandin secretion in mares during the oestrous cycle and early pregnancy. J Reprod Fertil 1998; 113: 173–9. 37. Stout TAE, Lamming GE, Allen WR. Oxytocin administration prolongs luteal function in cyclic mares. J Reprod Fertil 1999; 116:315–20. 38. Vanderwall DK, Rasmussen DM, Woods GL. Effect of repeated administration of oxytocin during diestrus on duration of function of corpora lutea in mares. J Am Vet Med Assoc 2007; 231:1864–7. 39. Pineda MH, Ginther OJ, McShan WH. Regression of corpus luteum in mares treated with an antiserum against an equine pituitary fraction. Am J Vet Res 1972; 33: 1767–73. 40. Pineda MH, Garcia MC, Ginther OJ. Effect of antiserum against an equine pituitary fraction on corpus luteum and follicles in mares during diestrus. Am J Vet Res 1973; 34: 181–3. 41. Bergfelt DR, Ginther OJ. Embryo loss following GnRH- induced ovulation in anovulatory mares. Theriogenology 1992; 38 :33–43. 42. Hedberg Y, Dalin AM, Santesson M, Kindahl H. A preliminary study on the induction of diestrus ovulation in the mare – a possible method for inducing prolonged luteal phase. Acta Vet Scand 2006; 48:12. 43. Glazar BS, McCue PM, Bruemmer JE, Squires EL. Deslorelin on Day 8 or 12 postovulation does not luteinize follicles during an artificially maintained diestrous phase in the mare. Theriogenology 2004; 62:57–64. 44. Lefranc AC, Allen WR. Nonpharmacological suppression of oestrus in the mare. Equine Vet J 2004 ; 36:183–5. 45. Meinert C, Silva JFS, Kroetz I, Klug E, Trigg TE, Hoppen HO, Jo c̈ hle W. Advancing the time of ovulation in the mare with a shortterm implant releasing the GnRH analogue deslorelin. Equine Vet J 1993; 25: 65–8. 46. McKinnon AO, Nobelius AM, Tarrida Del Marmol Figueroa S, Skidmore J, Vasey JR, Trigg TE. Predictable ovulation in Proceedings  of  the  South  African  Equine  Veterinary  Association  Congress  2016   24