Ram-induced reproduction in seasonally anovular Corriedale ewes: MAP doses for oestrous induction, ram percentages and post-mating progestagen supplementation

Animal Science

Volumn 64, Issue 1, 1997, Pages 119-125

  Rodriguez Iglesias R M ^a,b   Ciccioli, N H ^a   Irazoqui, H ^a  

^a UNIVERSIDAD NACIONAL DEL SUR   (Argentina)

^b TEXAS A AND M UNIVERSITY   (United States)

Author keywords

Anoestrus; Male effect; Progesterone; Seasonality; Sheep

Indexed keywords

ANIMALIA; OVIS; OVIS ARIES;

EID: 0005129976     PISSN: 13577298     EISSN: None     Source Type: Journal    
DOI: 10.1017/S1357729800015629     Document Type: Article

References (37)

1. Brown, G. H. 1988. The statistical comparison of reproduction rates for groups of sheep. Australian Journal of Agricultural Research 39: 899-905.
2. Cochran, W. C. 1977. Sampling techniques. Third edition. Wiley, New York.
3. Cognié, Y., Gayerie, F., Oldham, C. M. and Poindron, P. 1980. Increased ovulation rate at the ram-induced ovulation and its commercial application. Proceedings of the Australian Society of Animal Production 13: 80-81.
4. Consortium for Developing a Guide for the Care and Use of Agricultural Animals in Agricultural Research and Teaching. 1988. Guide for the care and use of agricultural animals in agricultural research and teaching. Urbana, IL.
5. Davies, M. C. G. and Beck, N. F. G. 1992. Plasma hormone profiles and fertility in ewe lambs given progestagen supplementation after mating. Theriogenology 38: 513-526.
6. Davis, I. F., Kerton, D. J., Parr, R. A., White, M. B. and Williams, A. H. 1986. Hormone supplementation to increase fertility after uterine artificial insemination in ewes. Proceedings of the Australian Society of Animal Production 16: 171-173.
7. Diskin, M. G. and Niswender, G. D. 1989. Effect of progesterone supplementation on pregnancy and embryo survival in ewes. Journal of Animal Science 67: 1559-1563.
8. Edey, T. N. 1967. Early embryonic death and cycle length in the ewe. Journal of Reproduction and Fertility 13: 437-443.
9. Edey, T. N. 1969. Prenatal mortality in sheep: a review. Animal Breeding Abstracts 37: 173-190.
10. Faure, A. S., Boshoff, D. A. and Burger, F. J. L. 1983. The effect of whole and halved intravaginal sponges combined with either subcutaneous or intravenous administration of PMSG on synchronization of the oestrous cycle of Karakul ewes. South African Journal of Animal Science 13: 157-160.
11. Greyling, J. P. C., Kotzé, W. F., Taylor, G. J. and Hagendijk, W. J. 1994. Synchronization of oestrus in sheep: use of different doses of progestagen outside the normal breeding season. South African Journal of Animal Science 24: 33-37.
12. Haresign, W., Williams, R. J., Khalid, M. and Rodway, R. G. 1995. Heart rate response and plasma cortisol and β-endorphin concentrations in ewes subjected to laparoscopy and its associated handling procedures. Animal Science 60: 525 (abstr.).
13. Irazoqui, H. and Menvielle, E. E. 1982. Ovulation rate of Corriedale ewes at Bahía Blanca, Argentina. Animal Production 35: 313-320.
14. Irazoqui, H., Rodríguez Iglesias, R. M. and Ciccioli, N. H. 1992. Introducción repentina de machos y tratamiento con progesterona en ovejas Corriedale anovulatorias encarneradas en primavera. Revista Argentina de Producción Animal 12: 177-183.
15. Kleemann, D. O., Walker, S. K., Grimson, R. J., Smith, D. H., Grosser, T. I. and Seamark, R. F. 1991. Exogenous progesterone and embryo survival in Booroola-cross ewes. Reproduction, Fertility and Development 3: 71-77.
16. Lindsay, D. R., Wilkins, J. F. and Oldham, C. M. 1992. Overcoming constraints: the ram effect. Proceedings of the Australian Society of Animal Production 19: 208-210.
17. McCullagh, P. and Nelder, J. A. 1989. Generalized linear models. Second edition. Chapman and Hall, New York.
18. McMillan, W. H. 1987. Post-mating progesterone supplementation in ewes and hoggets. Proceedings of the New Zealand Society of Animal Production 47: 151-153.
19. Martin, G. B., Oldham, C. M., Cognié, Y. and Pearce, D. T. 1986. The physiological responses of anovulatory ewes to the introduction of rams - a review. Livestock Production Science 15: 219-247.
20. Moore, N. W. 1988. The ovariectomized ewe: its contribution to controlled breeding. Australian Journal of Biological Sciences 41: 15-22.
21. Parr, R. A., Davis, I. F., Fairclough, R. J. and Miles, M. A. 1987. Overfeeding during early pregnancy reduces peripheral progesterone concentration and pregnancy rate in sheep. Journal of Reproduction and Fertility 80: 317-320.
22. Parr, R. A., Davis, I. F., Miles, M. A. and Squires, T. J. 1993. Liver blood flow and metabolic clearance rate of progesterone in sheep. Research in Veterinary Science 55: 311 -316.
23. Parr, R. A., Davis, I. F., Squires, T. J. and Miles, M. A. 1992. Influence of lupin feeding before and after joining on plasma progesterone and fertility in Merino ewes. Proceedings of the Australian Society of Animal Production 19: 185-187.
24. Pearce, D. T., Gray, S. J., Oldham, C. M. and Wilson, H. R. 1984. The use of intravaginal sponges and PMSG. Proceedings of the Australian Society of Animal Production 15: 164-168.
25. Peterson, A. J., Barnes, D., Stanley, R. and Welch, R. A. 1984. Administering progesterone after mating improves pregnancy rate in sheep. Proceedings of the New Zealand Endocrinological Society 21: 13 (abstr.).
26. Pope, W. F., Cárdenas, H., Wiley, T. M. and McClure, K. E. 1995. Dose-response relationships of exogenous progesterone shortly after ovulation on oestrous cycle length, blastocyst development and fertility in sheep. Animal Reproduction Science 38: 109-117.
27. Ricketts, A. P. and Flint, A. P. F. 1980. Onset of progesterone synthesis by placenta. Journal of Endocrinology 86: 337-347.
28. Rodríguez Iglesias, R. M., Ciccioli, N. H. and Irazoqui, H. 1992b. Distribución diaria de celos inducidos mediante 'efecto macho' en ovejas Corriedale inyectadas con progesterona o acetato de medroxy-progesterona. Revista Argentina de Producción Animal 12: 65-70.
29. Rodríguez Iglesias, R. M., Ciccioli, N. H., Irazoqui, H. and Giglioli, C. 1996. Ovulation rate in ewes after single oral glucogenic dosage during a ram-induced follicular phase. Animal Reproduction Science 44: 211-221.
30. Rodríguez Iglesias, R. M., Ciccioli, N. H., Irazoqui, H. and Rodríguez, B. T. 1991. Importance of behavioural stimuli in ram-induced ovulation in seasonally anovular Corriedale ewes. Applied Animal Behaviour Science 30: 323-332.
31. Rodríguez Iglesias, R. M., Irazoqui, H. and Ciccioli, N. H. 1992a. Response of anovular Corriedale ewes to teasing in spring. Small Ruminant Research 6: 317-322.
32. Rodríguez Iglesias, R. M., Irazoqui, H., Ciccioli, N. H. and Giglioli, C. 1993. Seasonality of oestrus and ovulation in Corriedale ewes: repeatabilities and phenotypic correlations. Journal of Agricultural Science, Cambridge 120: 115-119.
33. Statistical Sciences Inc. 1993. S-Plus for Windows user's manual, version 3.2. Statistical Sciences Inc., Seattle, WA.
34. Tempest, W. M. and Minter, C. M. 1987. Synchronized breeding and lambing. In New techniques in sheep production (ed. I. F. M. Marai and J. B. Owen), pp. 221-237. Butterworths, London.
35. Van Cleef, J., Drost, M. and Thatcher, W. W. 1991. Effects of postinsemination progesterone supplementation on fertility and subsequent estrous responses of dairy heifers. Theriogenology 36: 795-807.
36. Wilmut, I., Sales, D. I. and Ashworth, C. J. 1985. Physiological criteria for embryo mortality. Is asynchrony between embryo and ewe a significant factor? In Genetics of reproduction in sheep (ed. R. B. Land and D. W. Robertson), pp. 275-289. Butterworths, London.
37. Wilmut, I., Sales, D. I. and Ashworth, C. J. 1986. Maternal and embryonic factors associated with prenatal losses in mammals. Journal of Reproduction and Fertility 76: 851-864.