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Evaluation of three- and four-breed cross litters and pigs sired by purebred and crossbred boars

Published online by Cambridge University Press:  02 September 2010

M. H. Fahmy  and
W. B. Holtmann
M. H. Fahmy
Affiliation:
Research Station, Agriculture Canada, Lennoxville, Québec J1M 1Z3, Canada
W. B. Holtmann
Affiliation:
Department of Animal Science, Laval University, Ste-Foy, Quebec G1K 7P4, Canada
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Summary

Boars from four pure breeds and three two-breed crosses were mated at two stations to sows from six two-breed crosses to produce three- and four-breed cross litters. Two types of three-breed crosses were produced either using purebred boars or by partial backcrossing using crossbred boars. From the 504 litters produced 965 male pigs were slaughtered at 90 kg live weight. The purebred boars produced litters which were 0·4 and 0·2 pigs larger and 0·14 and 1·14 kg heavier at birth and 21 days respectively than the crossbred boars. Differences between pigs sired by purebred and crossbred boars were negligible for growth rate and carcass quality. Little difference was also found between three- and four-breed cross pigs sired by crossbred boars (except for daily gain, P < 0·05). Breed of dam was a significant source of variation on all the traits except dressing-out percentage. Significant breed of sire effect was found on all the traits related to carcass quality but not on those related to growth. Breed of sire × breed of dam interaction was significant on backfat thickness, carcass lean yield percentage and average daily gain. The best crosses in carcass value were those of Duroc boars mated to Hampshire-Landrace and Landrace-Yorkshire sows, while those pigs with the fastest gain were from Landrace boars ×Duroc-Yorkshire sows and Duroc-Yorkshire boars × Large Black-Lacombe sows.

Type
Research Article
Information
Animal Production , Volume 24 , Issue 2 , April 1977 , pp. 261 - 270
Copyright
Copyright © British Society of Animal Science 1977

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References

REFERENCES

Averdunk, G. and Schmidt, L. 1973. [Crossing experiments with pigs. I. Fertility of crossbred sows.] Bayer, landw, Jb. 50: 259–269.Google Scholar
Bichard, M. and Smith, W. C. 1971. Crossbreeding and genetic improvement. In Pig Production (ed. Cole, D. J. A.), pp. 37–52. Butterworth, London.Google Scholar
Dickerson, G. E. 1973. Inbreeding and heterosis in animals. In Proc. Anim. Breed. Genet. Symp., Blacksburg, Virginia, pp. 54–77. American Society of Animal Science, Champaign, Illinois.Google Scholar
Fahmy, M. H., Holtmann, W. B. and MacIntyre, T. M. 1976. Evaluation of performance at slaughter of twenty combinations of three-breed crosses of pigs. Anim. Prod. 23: 95–102.Google Scholar
King, J. W. B. 1968. [The hybridization of pigs.] Stočarstvo 22: 485–493.Google Scholar
King, J. W. B. and Thorpe, W. 1974. Experiments with Pietrain/Hampshire crossbred boars. Annls Genet. Sel. anim. 6: 148 (Abstr.).Google Scholar
Lishman, W. B., Smith, W. C., Bichard, M. and Thompson, R. 1975. The comparative performance of purebred and crossbred boars in commercial pig production. Anim. Prod. 21: 69–75.Google Scholar
Rempel, W. E., Comstock, R. E. and Enfield, F. D. 1964. Comparison of performance of crossbred pigs sired by purebred and crossbred boars. J. Anim. Sci. 23: 87–89.CrossRefGoogle Scholar
Schlote, W., Fender, M. and Fewson, D. 1974. The Baden-Württemberg cross-breeding experiment in swine-preliminary evaluation. Proc. Working Symp. Breed Evaluation and Crossing Experiments with Farm Animals, Zeist, Netherlands, pp. 343–352.Google Scholar
Sellier, P. 1975. [A comparison of the crossbred progeny of Piétrain and Hampshire × Piétrain boars.] In Journées de la Recherche Porcine en France, pp. 253–258. Institut Technique du Pore, Paris.Google Scholar
Sellier, P., Dufour, L. and Rousseau, G. 1971. [Study of sexual precocity and some ejaculate characters in boars of five genetic types: first results.] Annls Genet. Sel. anim. 3: 357–365.Google Scholar
Wilson, E. R. 1976. Reproductive and testes characteristics of purebred and crossbred boars. M.S. Thesis, Okla. State University, Stillwater, Okla.Google Scholar