Method of stimulating ovulation rate in Merino ewes may affect conception but not embryo survival

Animal Reproduction Science

Volumn 47, Issue 1-2, 1997, Pages 31-42

  Wilkins, J F ^a,b  

^a NSW AGRICULTURE   (Australia)

^b UNIVERSITY OF WESTERN AUSTRALIA   (Australia)

Author keywords

Embryo survival; Fertility; Ovulation rate; Sheep ovulation

Indexed keywords

ANIMAL; ANIMAL DISEASE; ARTICLE; BREEDING; DIET; DRUG EFFECT; EMBRYO; FEMALE; FERTILIZATION; METHODOLOGY; MULTIPLE PREGNANCY; OVULATION; OVULATION INDUCTION; PHYSIOLOGY; PREGNANCY; PREGNANCY RATE; PRENATAL DEVELOPMENT; RANDOMIZATION; SHEEP; STANDARD; TWINS;

ANIMALS; BREEDING; DIET; EMBRYO; FEMALE; FERTILIZATION; OVULATION; OVULATION INDUCTION; PREGNANCY; PREGNANCY RATE; PREGNANCY, MULTIPLE; RANDOM ALLOCATION; SHEEP; TWINS;

EID: 0031149444     PISSN: 03784320     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0378-4320(96)01636-3     Document Type: Article

References (36)

1. Boland, M.P., Nancarrow, C.D., Murray, J.D., Scaramuzzi, R.J., Sutton, R., Hoskinson, R.M. and Hazelton, I.G., 1986. Fertilization and early embryonic development in androstenedione-immunized Merino ewes. J. Reprod. Fertil., 78: 423-431.
2. Bradford, G.E., Quirke, J.F. and Famula, T.R., 1986. Fertility, embryo survival and litter size in lines of Targhee sheep selected for weaning weight or litter size. J. Anim. Sci., 62: 895-904.
3. Brien, F.D., Cumming, I.A. and Baxter, R.W., 1977. Effect of feeding a lupin grain supplement on reproductive performance of maiden and mature ewes. J. Agric. Sci., 89: 437-443.
4. Cameron, A.W.N., Oldham, C.M., Fairnie, I.J., Keogh, E.J. and Lindsay, D.R., 1988. The number of spermatozoa, the number of ovulations per ewe, and immunization against androstenedione affect fertility and prolificacy of sheep. J. Reprod. Fertil., 84: 43-50.
5. Cognie, Y., Gray, S.J., Lindsay, D.R., Oldham, C.M., Pearce, D.T. and Signoret, J.P., 1982. A new approach to controlled breeding in sheep using the 'ram effect'. Proc. Aust. Soc. Anim. Prod., 14: 519-522.
6. Cox, R.I., 1984. Increased lambing percentages in sheep using a controlled active immunization against steroids. In: T.W. Scott (Editor), Application of Immunization Techniques to Improve Livestock Productivity. Proc. Aust. Soc. Anim. Prod., 15: 182-185.
7. Croker, K.P., Lightfoot, R.J. and Marshall, T., 1976. The fertility of Merino ewes grazed on standing, unharvested sweet lupins prior to and during joining. In: G.J. Tomes, D.E. Robertson and R.J. Lightfoot (Editors), Sheep Breeding. Western Australian Institute of Technology, Perth, pp. 391-394.
8. Croker, K.P., Johns, M.A. and Johnson, T.J., 1985. Reproductive performance of Merino ewes supplemented with sweet lupin seed in southern Western Australia. Aust. J. Exp. Agric., 25: 21-26.
9. Croker, K.P., Cox, R.I., Johnson, T.J. and Salerian, M., 1987. The reproductive performance of naturally mated and artificially inseminated ewes treated with Fecundin at various intervals before the start of breeding. Theriogenology, 27: 869-877.
10. Downing, J.A., Joss, J., Connell, P. and Scaramuzzi, R.J., 1995. Ovulation rate and the concentrations of gonadotrophic and metabolic hormones in ewes fed lupin grain. J. Reprod. Fertil., 103: 137-145.
11. Edey, T.N., 1969. Prenatal mortality in sheep: a review. Anim, Breed. Abstr., 37(2): 173-190.
12. Geldard, H., Dow, G.J., Scaramuzzi, R.J., Hoskinson, R.M., Cox, R.I. and Beels, C.M., 1984. Immunization of ewes with polyandroalbumin to improve fecundity. Aust. Vet. J., 61: 130-132.
13. Hanrahan, J.P., 1980. Ovulation rate as the selection criterion for litter size in sheep. Proc. Aust. Soc. Anim. Prod., 13: 405-408.
14. Hanrahan, J.P. and Quirke, J.F., 1985. Contribution of variation in ovulation rate and embryo survival to within breed variation in litter size. In: R.B. Land and D.W. Robinson (Editors), Genetics of Reproduction in Sheep. Butterworths, London, pp. 193-201.
15. Harvey, W.R., 1985. User's Guide for LSMLMW. The Ohio State University, pp. 1-46.
16. Knight, T.W., Oldham, C.M. and Lindsay, D.R., 1975. Studies in ovine infertility in agricultural regions in Western Australia: the influence of a supplement of lupins (Lupinus angustifolius cv. Uniwhite) at joining on the reproductive performance of ewes. Aust. J. Agric. Res., 26: 567-575.
17. Lightfoot, R.J. and Marshall, T., 1976. Effects of lupin grain supplementation on ovulation rate and fertility of Merino ewes. J. Reprod. Fertil., 46: 518.
18. Lindsay, D.R., Knight, T.N., Smith, J.F. and Oldham, C.M., 1975. Studies in ovine fertility in agricultural regions of Western Australia: ovulation rate, fertility and lambing performance. Aust. J. Agric. Res., 26: 189-198.
19. Marshall, T., Lightfoot, R.J., Croker, K.P. and Allen, J.G., 1976. Lupin stubbles and ewe fertility. In: G.J. Tomes, D.E. Robertson and R.J. Lightfoot (Editors), Sheep Breeding. Western Australian Institute of Technology, Perth, pp. 386-390.
20. Meyer, H.H. and Lewis, R.D., 1988. Reproductive response of ewes to immunization with Fecundin (Ovandrotone). J. Anim. Sci., 66: 2742-2749.
21. Meyer, H.H., Piper, L.R., Bindon, B.M. and Woolaston, R.R., 1994. Litter size and uterine efficiency of Booroola Merino, control Merinos and their crosses with Border Leicester and Dorset. Livest. Prod. Sci., 38: 217-213.
22. Morley, F.H.W., White, D.H., Kenney, P.A. and Davis, I.F., 1978. Predicting ovulation rate from liveweight in ewes. Agric. Syst., 3: 27-45.
23. Nottle, M.B., Hynd, P.I., Seamark, R.F. and Setchell, B.P., 1988. Increases in ovulation rate in lupin-fed ewes are initiated by increases in protein digested post-ruminally. J. Reprod. Fertil., 84: 563-566.
24. Oldham, C.M. and Lindsay, D.R., 1984. The minimum period of intake of lupin grain required by ewes to increase their ovulation rate when grazing dry summer pasture. In: D.R. Lindsay and D.T. Pearce (Editors), Reproduction in Sheep. Australian Academy of Science. Canberra, pp. 274-276.
25. Oldham, C.M., Allen, G.M. and Fortune, J.A., 1994. Production from cows and calves set-stocked on tagasaste, a perennial leguminous fodder shrub. Proc. Aust. Soc. Anim. Prod., 20: 85-88.
26. Restall, B.J., Brown, G.H., Blockey, M. deB., Cahill, L. and Kearins, R., 1976. Assessment of reproductive wastage in sheep. 1. Fertilization failure and early embryonic survival. Aust. J. Exp. Agric. Anim. Husb., 16: 329-335.
27. Scaramuzzi, R.J., Davidson, W.G. and Van Look, P.F.A., 1977. Increasing ovulation rate in sheep by active immunisation against an ovarian steroid androstenedione. Nature, 269: 817-818.
28. Schoenian, S.C. and Burfening, P.J., 1990. Ovulation rate, lambing rate, litter size and embryo survival of Rambouillet sheep selected for high and low reproductive rate. J. Anim. Sci., 68: 2263-2270.
29. Smith, J.F., 1985. Immunisation of ewes against steroids: A review. Proc. N.Z. Soc. Anim. Prod., 45: 171-177.
30. Smith, J.F., Maclean, K.S., McGowan, L.T. and Potts, I.R., 1985. Effect of ewe live weight on the level of response to steroid immunisation. Proc. N.Z. Soc. Anim. Prod., 45: 184-187.
31. Stewart, R. and Oldham, C.M., 1986. Feeding lupins to ewes for four days during the luteal phase can increase ovulation rate. Proc. Aust. Soc. Anim. Prod., 16: 367-370.
32. Teleni, E., Rowe, J.B. and Croker, K.P., 1984. Ovulation rates in ewes: the role of energy-yielding substrates. In: D.R. Lindsay and D.T. Pearce (Editors), Reproduction in Sheep. Australian Academy of Science, Canberra, pp. 277-278.
33. Teleni, E., Rowe, J.B., Croker, K.P., Murray, P.J. and King, W.R., 1989. Lupins and energy-yielding nutrients in ewes II. Responses in ovulation rate in ewes to increased availability of glucose, acetate and amino acids. Reprod. Fertil. Dev., 1: 117-125.
34. West, K.S., Meyer, H.H. and Nawaz, M., 1991. Effects of differential ewe condition at mating and early postmating nutrition on embryo survival. J. Anim. Sci., 69: 3931-3938.
35. White, D.H., Rizzoli, D.J. and Cumming, I.A., 1981. Embryo survival in relation to number and site of ovulations in the ewe. Aust. J. Exp. Agric. Anim. Husb., 21: 32-38.
36. Wilkins, J.F., 1991. Contribution of embryo loss to reproductive performance in Merino ewes. Ph.D. Thesis, University of Western Australia.