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The effect of immunoneutralization of PMSG near a gonadotropin-induced oestrus on the reproductive performance of gilts

Published online by Cambridge University Press:  02 September 2010

R. N. Kirkwood ,
A. J. Peacock ,
T. A. Van Lunen  and
P. A. Thacker
R. N. Kirkwood
Affiliation:
Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0
A. J. Peacock
Affiliation:
Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0
T. A. Van Lunen
Affiliation:
Agriculture Canada Experimental Farm, Nappan, Nova Scotia, Canada B0L 1C0
P. A. Thacker
Affiliation:
Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0
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Abstract

In four experiments, 189 gilts either received PMSG antiserum around the time of a PMSG- (experiments 1, 2 and 3) or PMSG/hCG-induced (experiment 4) oestrus or served as controls. Ovulation rates were not affected by treatment. There was no treatment effect on pregnancy rate (experiments 2, 3 and 4). In experiment 2, numbers of embryos in PMSG-treated control gilts were quite low and were higher (P < 0·05) in those gilts subsequently receiving anti-PMSG treatment. In experiment 3, the mean number of embryos in control gilts were higher than in experiment 2 and there was no effect of immunoneutralization of PMSG. No treatment effect was evident in PMSG/hCG treated gilts (experiment 4). These data indicate that the immunoneutralization of PMSG is unlikely to improve the reproductive performance of gilts following a gonadotropin-induced oestrus except in gilts that otherwise would have poor performance.

Keywords

giltsimmune serumPMSGreproduction
Type
Research Article
Information
Animal Production , Volume 58 , Issue 3 , June 1994 , pp. 401 - 404
Copyright
Copyright © British Society of Animal Science 1994

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References

Ashworth, C. J. 1991. Effect of pre-mating nutritional status and post-mating progesterone supplementation on embryo survival and conceptus growth in gilts. Animal Reproduction Science 26:311–321.CrossRefGoogle Scholar
Burnett, P. J., Walker, N. and Kilpatrick, D. J., 1988. The effect of age and growth traits on puberty and reproductive performance in the gilt. Animal Production 46: 427–436.CrossRefGoogle Scholar
Dieleman, S. J., and Bevers, M. M. 1987. Effects of monoclonal antibody against PMSG administered shortly after the preovulatory LH surge on time and number of ovulations in PMSG/PG-treated cows. Journal of Reproduction and Fertility 81:533–542.CrossRefGoogle ScholarPubMed
Dzuik, P. J. 1987. Embryonic loss in the pig: an enigma. In Manipulating pig production (ed. Barnett, J. L., Batterham, E. S., Cronin, G. M., Hansen, C., Hemsworth, P. H., Hennessy, D. P., Hughes, P. E., Johnston, N. E., King, R. H.), pp. 28–39. Australasian Pig Science Association, Albury, NSW.Google Scholar
Hunter, M. G. and Wiesak, T. 1990. Evidence for and implications of follicular heterogeneity in pigs. Journal of Reproduction and Fertility Suppl. 40:163–177.Google ScholarPubMed
Jabbour, H. N. and Evans, G. 1991. Ovarian and endocrine responses of merino ewes following treatment with PMSG and GnRH or PMSG antiserum. Animal Reproduction Science 24:259–270.CrossRefGoogle Scholar
Kirkwood, R. N. and Thacker, P. A. 1992. The influence of PMSG antiserum on serum progesterone and reproductive performance of gilts. Canadian Journal of Animal Science 72:173–176.CrossRefGoogle Scholar
Kirkwood, R. N., Thacker, P. A. and Chaplin, R. K. 1991. The influence of exogenous gonadotrophins and cloprostenol on ovulation in gilts. Canadian Veterinary Journal 32:742–746.Google ScholarPubMed
Martemucci, G., D'Alessandro, A., Toteda, F., Gambacorta, M. and Bellitti, E. 1993. Effect of injection time of monoclonal anti-PMSG on ovarian response and embryo production in superovulated ewes. Proceedings of the seventh world conference on animal production, Vol. 2, pp.274–275.Google Scholar
Paterson, A. M. 1982. The controlled induction of puberty. In Control of pig production (ed. Cole, D. J. A., Foxcroft, G. R.), pp. 139–160. Butterworths, London.CrossRefGoogle Scholar
Van Lunen, T. A., Kirkwood, R. N. and Thacker, P. A. 1989. The influence of allyl trenbolone on the occurrence of normal estrous cycles following a gonadotrophin-induced ovulation in prepubertal gilts. Canadian Journal of Animal Science 69:1091–1093.CrossRefGoogle Scholar