Reproductive Seasonality in Sheep

Acta Agriculturae Scandinavica - Section A: Animal Science

Volumn 53, Issue 4, 2003, Pages 175-179

  Gündoǧan, Mustafa ^a   Baki, Duygu ^a   Yeni, Deniz ^a  

^a AFYON KOCATEPE UNIVERSITY   (Turkey)

Author keywords

Anestrus; Melatonin; Photoperiod; Ram effect; Reproduction; Sheep

Indexed keywords

ANIMALIA; OVIS ARIES;

EID: 0346282900     PISSN: 09064702     EISSN: None     Source Type: Journal    
DOI: 10.1080/09064700310014960     Document Type: Review

References (43)

1. Ainsworth, L. & Wolynetz, M.S. 1982. Synchronization of estrus and reproductive performance of ewes treated with synthetic progestogens administered by subcutaneous ear implant or by intravaginal sponges pessary. J. Anim. Sci. 54, 1120-1127.
2. Boscos, C.M., Samartzi, F.C., Dellis, S., Rogge, A., Stefanakis, A. & Krambovitis, E. 2002. Use of progestogen-gonadotrophin treatments in estrus synchronization of sheep. Theriogenology 15, 1261-1272.
3. Bozkurt, T., Gündoǧan, M. & Esen, F. 1999. Estrus synchronization with Fluorogestone acetate+PMSG during the seasonal estrus period in Akkaraman yearling lambs and ewes. F.U. J of Health Sci. 13, 173-176.
4. Cam, M.A., Kuran, M., Yildiz, S. & Selcuk, E. 2002. Fetal growth and reproductive performance in ewes administered GnRH agonist on day 12 post-mating. Anim. Reprod. Sci. 15, 73-82.
5. Clarke, I.J. 2001. Sex and season are major determinants of voluntary food intake in sheep. Reprod. Fertil. Dev. 13, 577-582.
6. Cline, M.A., Ralston, J.N., Seals, R.C. & Lewis, G.S. 2001. Intervals from norgestomet withdrawal and injection of equine chorionic gonadotrophin or P.G. 600 to estrus and ovulation in ewes. J. Anim. Sci. 79, 589-594.
7. Coulson, T., Catchpole, E.A., Albon, S.D., Morgan, B.J., Pemberton, J.M., Clutton-Brock, T.H., Crawley, M.J. & Grenfell, B.T. 2001. Age, sex, density, winter weather, and population crashes in Soay sheep. Science 25, 1528-1531.
8. Evans, A.C., Flynn, J.D., Quinn, K.M., Daffy, P., Quinn, P., Madgwick, S., Crosby, T.F., Bolan, M.P. & Beard, A.P. 2001. Ovulation of aged follicles does not affect embryo quality or fertility after a 14-day progestogen estrus synchronization protocol in ewes. Theriogenology 15, 923-936.
9. 2 alpha. J. Anim. Sci. 61, 446-449.
10. Flynn, J.D., Duffy, P., Boland, M.P. & Evans, A.C. 2000. Progestogen synchronisation in the absence of a corpus luteum results in the ovulation of a persistent follicle in cyclic ewe lambs. Anim. Reprod. Sci. 1, 285-296.
11. Forcada, F., Zuniga, O. & Abecia, J.A. 2002. The role of nutrition in the regulation of LH secretion during anestrus by the serotoninergic and dopaminergic systems in Mediterranean ewes treated with melatonin. Theriogenology 15, 1303-1313.
12. Garcia, R.M., Santiago-Moreno, J., Lopez-Sebastian, A. & Cocero, M.J. 2002. Effect of follicular status on superovulatory response in ewes is influenced by presence of corpus luteum at first FSH dose. Theriogenology 58, 1607-1614.
13. Gonzales-Bulnes, A., Santiago-Moreno, J., Cocero, M.J. & Lopez-Sebastian, A. 2000. Effects of FSH commercial preparation and follicular status on follicular growth and superovulatory response in Spanish Merino ewes. Theriogenology 15, 1055-1064.
14. rd Int. Symposion on Testosterone: Action, Deficiency, Substitution, on Castle Elmav, Bavaria, Germany.
15. Gündoǧan, M. & Demirci, E. 1999. The effects of scrotal heating on spermatogenesis and semen characteristics in rams. F.U. J of Health Sci. 13, 193-200.
16. Gündoǧan, M., Demirci, E., Bozkurt, T. & Sönmez, M. 1997. The changes before, during and later in the breeding season in the semen characterstics of rams. The J. of The Faculty of Vet. Med. University of Yüzüncü Yil. 8, 40-42.
17. nd Nat. Congr. Reprod. and Artificial Insem. September, Konya, Turkey, 21 pp.
18. Gündoǧan, M. & Yardimci, M. 2003. The effect of estrus synchronization on fertility in sheep. Bultendif 20, 13-15.
19. Hudgens, R.E., Martin, T.G., Diekman, M.A. & Waller, S.L. 1987. Reproductive performance of Suffolk and Suffolk-cross ewes and ewe lambs exposed to vasectomized rams before breeding. J. Anim. Sci. 65, 1173-1179.
20. Kaya, A., Aksoy, M., Baspinar, N., Yildiz, C. & Ataman, M.B. 2001. Effect of melatonin implantation to sperm donor rams on postthaw viability and acrosomal integrity of sperm cells in the breeding and non-breeding season. Reprod. Domest. Anim. 36, 211-215.
21. Knights, M., Hoehn, T., Lewis, P.E. & Inskeep, E.K. 2001. Effectiveness of intravaginal progesterone inserts and FSH for inducing synchronized estrus and increasing lambing rate in anestrous ewes. J. Anim. Sci. 79, 1120-1131.
22. Knights, M., Maze, T.D., Bridges, P.J., Lewis, P.E. & Inskeep, E.K. 2001. Short-term treatment with a controlled internal drug releasing (CIDR) device and FSH to induce fertile estrus and increase prolificacy in anestrous ewes. Theriogenology 15, 1181-1191.
23. Kokolis, N., Theodosiadou, E., Tsantarliotou, M., Rekkas, C., Goulas, P. & Smokovitis, A. 2000. The effect of melatonin implants on blood testosterone and acrosin activity in spermatozoa of the ram. Andrologia 32, 107-114.
24. Lucidi, P., Barboni, B. & Mattioli, M. 2001. Ram-induced ovulation to improve artificial insemination efficiency with frozen semen in sheep. Theriogenology 55, 1797-1805.
25. Lunstra, D.D. & Christenson, R.K. 1981. Synchronization of ewes during anestrus: influence of time of year and interval to onset of estrus on conception rate. J. Anim. Sci. 53, 448-457.
26. Malpaux, B., Thiery, J.C. & Chemineau, P. 1999. Melatonin and the seasonal control of reproduction. Reprod. Nutr. Dev. 39, 355-366.
27. Mitchell, L.M., Dingwall, W.S., Mylne, M.J., Hunton, J., Matthews, K., Gebbie, F.E., McCallum, G.J. & McEvoy, T.G. 2002. Season affects characteristics of the pre-ovulatory LH surge and embryo viability in superovulated ewes. Anim. Reprod. Sci. 16, 163-174.
28. Mitchell, L.M., Ranilla, M.J., Quintans, G., King, M.E., Gebbie, F.E. & Robinson, J.J. 2003. Effect of diet and GnRH administration on post-partum ovarian cyclicity in autumn-lambing ewes. Anim. Reprod. Sci. 20, 67-79.
29. Perkins, A. & Fitzgerald, J.A. 1994. The behavioral component of the ram effect: the influence of ram sexual behavior on the induction of estrus in anovulatory ewes. J. Anim. Sci. 72, 51-55.
30. Rajkumar, R.R., Argo, C.M. & Rodway, R.G. 1989. Fertility of ewes given either melatonin or progestogen sponges. Vet. Rec. 4, 215-217.
31. Reisenberg, S., Meinecke-Tillmann, S. & Meinecke, B. 2001. Ultrasonic study of follicular dynamics following superovulation in German Merino ewes. Theriogenology 1, 847-865.
32. Rekwot, P.I., Ogwv, D., Oyedipe, E.O. & Sekoni, V.O. 2001. The role of pheromones and biostimulation in animal reproduction. Anim. Reprod. Sci. 65, 157-170.
33. Rivera, G.M., Alanis, G.A., Chaves, M.A., Ferrero, S.B. & Morello, H.H. 2003. Seasonality of estrus and ovulation in Creole goats of Argentina. Small Rum. Res. 48, 109-117.
34. Stellflug, J.N., Hatfield, P.G., Wulster-Radcliffe, M.C. & Walker, J.W. 2001. Reproductive performance of ewe lambs from ewes from different selection practices with or without induced estrus. Anim. Reprod. Sci. 31, 185-193.
35. Stellflug, J.N., Rodriguez, F., La Voice, V.A. & Glimp, H.A. 1994. Influence of simulated photoperiod alteration and induced estrus on reproductive performance of spring-born Columbia and Targhee ewe lambs. J. Anim. Sci. 72, 29-33.
36. Thiery, J.C., Chemineau, P., Hernandez, X., Migaud, M. & Malpaux, B. 2002. Neuroendocrine interactions and seasonality. Domest. Anim. Endocrinol. 23, 87-100.
37. nd Nat. Congr. Reprod. and Art. Ins. September, Konya, Turkey, 48 pp.
38. Ungerfeld, R., Pinczak, A., Forsberg, M. & Rubianes, E. 1999. Response of Corriedale ewes to the "ram effect" after priming with medroxyprogesterone, fluorogestone, or progesterone in the non-breeding season. Acta. Vet. Scand. 40, 299-305.
39. Vinoles, C., Forsberg, M., Banchero, G. & Rubianes, E. 2001. Effect of long-term and short-term progestogen treatment on follicular development and pregnancy rate in cyclic ewes. Theriogenology 1, 993-1004.
40. Webb, R., Gosden, R.G., Tefler, E.E. & Moor, R.M. 1999. Factors affecting folliculogenesis in ruminants. Anim. Sci. 68, 257-284.
41. Whitley, N.C., McFadin-Buff, E.L. & Keisler, D.H. 2000. Effect of insulin on feed intake and reproductive performance of well-nourished nulliparous ewes. Theriogenology 15, 1049-1054.
42. Wright Jr, R.W., Bondioly, K., Grammer, J., Kuzan, F. & Menino Jr, A. 1981. FSH or FSH plus LH superovulation in ewes following estrus synchronization with medoxyprogesterone acetate pessaries. J. Anim. Sci. 52, 115-118.
43. Zuniga, O., Forcada, F. & Abecia, J.A. 2002. The effect of melatonin implants on the response to the male effect and on the subsequent cyclicity of Rasa Aragonesa ewes implanted in April. Anim. Reprod. Sci. 15, 165-174.