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The genetic evaluation of beef sires used for crossing with dairy cows in the UK 1. Sire breed and non-genetic effects on calving survey traits

Published online by Cambridge University Press:  02 September 2010

B. J. McGuirk ,
I. Going  and
A. R. Gilmour
B. J. McGuirk
Affiliation:
Genus, Bays Leap Farm, Heddon on the Wall, Newcastle upon Tyne NE15 0JW
I. Going
Affiliation:
Genus, Bays Leap Farm, Heddon on the Wall, Newcastle upon Tyne NE15 0JW
A. R. Gilmour
Affiliation:
NSW Agriculture, Agricultural Research and Veterinary Centre, Forest Road, Orange, NSW 2000, Australia
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Abstract

An analysis has been carried out of over 88000 calving survey records for bulls of eight beef breeds tested in commercial dairy herds in England and Wales. The data were collected from 1981 to 1993. The traits analysed were the degree of difficulty at calving, assessed from no difficulty to serious difficulty, calf mortality to 48 h, gestation length, and subjective assessments of calf size and conformation.

Major sire breeds in the survey were the Hereford (30070 records, 93 sires), Charolais (25816 records, 105 sires) and the Limousin (15420 records, 55 sires). Other sire breeds were Belgian Blue (5391 records, 24 sires), Simmental (3864 records, 19 sires), Aberdeen Angus (2886 records, 12 sires), Piedmontese (2423 records, 7 sires) and the Blonde d'Aquitaine (2271 records, 8 sires).

Information was routinely recorded on cow age (heifer or mature), sex of the calf, and the year and month of the calving, while cow size and the regional location of the herd were also recorded in later years.

Heifers had more difficult calvings, higher calf losses and shorter gestations than mature cows (all P < 0·05) Seriously difficult calvings and calf mortality were higher for male calves, which were also larger and had better conformation than heifer calves (P < 0·05).

Sire breed effects were significant for all traits, although sire breed ranking for calving ease was different for cow and heifer calvings and some interactions involving sire breed were also significant. For cow calvings, the easiest calving breeds were the Hereford (1·1%) and the Aberdeen Angus (1·4%), while the Charolais (4·3%), Blonde d'Aquitaine (3·7%) and Simmental (3·1%) had most difficult calvings.

Gestation length differed between sire breeds, from Aberdeen Angus (281·0 days) and Hereford (282·7 days) up to the Limousin (288·1 days) and the Blonde d'Aquitaine (289·0 days). For calf size and conformation, the Simmental, Charolais and Blonde d'Aquitaine were the best.

In general, summer months were associated with lower incidences of difficult calvings, lower losses and shorter gestations.

Large cows had calves which were larger and of better conformation than small or medium cows, but large cows also had longer gestations, more difficult calvings and poorer calf survival (all P < 0·05).

Statistical models are discussed that should be used for the genetic evaluation of calving survey traits, when beef bulls are to be used in dairy herds in the United Kingdom.

Keywords

beef productioncalvingsire evaluation
Type
Research Article
Information
Animal Science , Volume 66 , Issue 1 , February 1998 , pp. 35 - 45
Copyright
Copyright © British Society of Animal Science 1998

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References

Baker, H. K. 1977. Experiment in crossing beef in dairy and beef cows in the United Kingdom. In Cross breeding experiment and strategy of beef utilisation to increase beef production (ed. Mason, I. L. and Pabst, W.), pp. 258–276. Symposium organized by the European Economic Community.Google Scholar
Crump, R. E., Simm, G., Nicholson, D., Findlay, R. H., Bryan, J. G. E. and Thompson, R. 1994. Genetic evaluation of British pedigree beef cattle breeds. Proceedings of the fifth world congress on genetics applied to livestock production, Guelph, vol. 17, pp. 180–183.Google Scholar
Gilmour, A. R. 1994. Reg — A user's manual. NSW Agriculture, occasional publication.Google Scholar
James, J. W. 1975. Genetical considerations in large field experiments. In Developments in field experiment design and analysis (ed. Bofinger, V. J. and Wheeler, J. L.), pp. 155–166. Commonwealth Agricultural Bureaux.Google Scholar
McGuirk, B. J., Going, I. and Gilmour, A. R. 1998. The genetic evaluation of beef sires used for crossing with dairy cows in the UK. 2. Genetic parameters and sire merit predictions for calving survey traits. Animal Science 66: 47–54.CrossRefGoogle Scholar
Meat and Livestock Commission. 1996. Beef yearbook 1996. Meat and Livestock Commission, Milton Keynes.Google Scholar
Meijering, A. 1984. Dystocia and stillbirth in cattle — a review of causes, relations and implications. Livestock Production Science 11: 143–177.CrossRefGoogle Scholar
Philipsson, J. 1976. Studies on calving difficulty, still birth and associated factors in Swedish cattle breeds. 2. Effects of non-genetic factors. Ada Agriculturae Scandinavica 26: 165–174.CrossRefGoogle Scholar
Philipsson, J., Foulley, J. L., Lederer, J., Liboriussen, T. and Osinga, A. 1979. Sire evaluation standards and breeding strategies for limiting dystocia and still birth. Report of an EEC/EAAP working group. Livestock Production Science 6: 111–127.CrossRefGoogle Scholar
Pollak, E. J. and Freeman, A. E. 1976. Parameter estimation for dystocia and calf size in Holsteins. Journal of Dairy Science 59: 1817–1824.CrossRefGoogle Scholar
Quaas, R. L., Zhao, Y. and Pollak, E. J. 1988. Describing interactions in dystocia scores with a threshold model. Journal ofAnimal Science 66: 396–399.Google ScholarPubMed