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High mating frequency for boars: predicting the effect on sexual behaviour, fertility and fecundity

Published online by Cambridge University Press:  02 September 2010

P. H. Hemsworth ,
C. G. Winfield  and
C. Hansen
P. H. Hemsworth
Affiliation:
Animal Research Institute, Werribee, Victoria 3030, Australia
C. G. Winfield
Affiliation:
Animal Research Institute, Werribee, Victoria 3030, Australia
C. Hansen
Affiliation:
Animal Research Institute, Werribee, Victoria 3030, Australia
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Abstract

In the first experiment there were significant correlations between the average product of the length and width of the boar's testicles and the sperm output of the boar under a high collection frequency over two 6-h periods and over a 6-week period (r = +0·80, d.f. = 4, P < 0·05 and r = +0·77, d.f. = 7, P < 0·05, respectively). In the second experiment there were no significant differences in the fertility or fecundity of mature boars that had either two or six copulations per week over a 25-week period. However, there was a significant correlation between the average width of the boar's testicles and the fertility of the boar under the high mating frequency (r = +0·74, d.f. = 8, P < 0·05). There were also significant correlations between the number of copulations achieved in two mating tests and the number of copulations achieved and the refusal rate to mate under the high mating frequency (r = +0·86, and r = –0·89, respectively, d.f. = 6, P < 0·01). The implication of these results to the development of tests to predict mating performance of boars is discussed

Type
Research Article
Information
Animal Production , Volume 37 , Issue 3 , December 1983 , pp. 409 - 413
Copyright
Copyright © British Society of Animal Science 1983

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References

REFERENCES

Amann, R. P. 1970. Sperm production rates. In The Testis. Vol. 1. Development, Anatomy and Physiology. (ed. Johnston, A. D., Gomes, W. R. and VanDemark, N. L.), pp. 435–480. Academic Press, New York.Google Scholar
Anonymous. 1975. Porcine reproductive inefficiency. Vet. Rec. 96: 506–509.CrossRefGoogle Scholar
Blockey, M. A. de B. 1980. Testicle size in bulls. Proc. Aust. Soc. Anim. Prod. 13: 52–53.Google Scholar
Carroll, W. E., Krider, J. L. and Andrews, F. N. 1962. Breeding management practices in swine. In Swine Production, 3rd ed., pp. 105–122. McGraw-Hill, New York.Google Scholar
Hemsworth, P. H. and Beilharz, R. G. 1979. The influence of restricted physical contact with pigs during rearing on the sexual behaviour of the male domestic pig. Anim. Prod. 29: 311–314.Google Scholar
Hemsworth, P. H., Findlay, J. K. and Beilharz, R. G. 1978. The importance of physical contact with other pigs during rearing on the sexual behaviour of the male domestic pig. Anim. Prod. 27: 201–207.Google Scholar
Hughes, P. E. and Varley, M. A. 1980. Fertility in the male. In Reproduction in the Pig, pp. 187–195. Butterworth, London.Google Scholar
Lagerlöff, N. and Carlquist, H. 1961. The semen of boars of the Yorkshire breed between the ages of five and nine months. Proc. IVth int. Congr. Anim. Reprod., The Hague 4: 818–821.Google Scholar
Leman, A. D. and Rodeffer, H. E. 1976. Boar management. Vet. Rec. 98: 457–459.CrossRefGoogle ScholarPubMed
Mateos, E. R., Chenoweth, P. J., Pexton, J. E. and FARIN, P. W. 1978. Relationship of breeding soundness values with pregnancy rates of bulls breeding synchronised heifers. J. Anim. Sci. 47: Suppl. 1. p. 377 (Abstr.).Google Scholar
Niwa, T. 1961. Researches and practices in the artificial insemination of pigs. Proc. IVth int. Congr. Anim. Reprod., The Hague 1: 83–115.Google Scholar
Podaný, J. 1969. Testicular biometry in boars. Acta Vet., Brno 38: 215–221.Google Scholar
Rasbech, N. O. 1969. A review of the causes of reproductive failure in swine. Br. vet. J. 125: 599–616.CrossRefGoogle ScholarPubMed
Signoret, J. P. 1970. Swine behaviour in reproduction. Proc. Symp. Effect of Disease and Stress in Reproductive Efficiency in Swine, Univ. Nebraska, Lincoln, Nebraska, pp. 28–45.Google Scholar
Swierstra, E. E. 1971. Sperm production of boars as measured from epididymal sperm reserves and quantitative testicular histology. J. Reprod. Fert. 27: 91–99.CrossRefGoogle ScholarPubMed
Swierstra, E. E. 1973. Influence of breed, age and ejaculation frequency on boar semen composition. Can. J. Anim. Sci. 53: 43–53.CrossRefGoogle Scholar