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A comparison of different breeds and crosses from the suckler herd 1. Live-weight growth and efficiency of food utilization

Published online by Cambridge University Press:  02 September 2010

J. R. Southgate ,
G. L. Cook  and
A. J. Kempster
J. R. Southgate
Affiliation:
Meat and Livestock Commission, PO Box 44, Queensway House, Bletchley, Milton Keynes MK2 2EF
G. L. Cook
Affiliation:
Meat and Livestock Commission, PO Box 44, Queensway House, Bletchley, Milton Keynes MK2 2EF
A. J. Kempster
Affiliation:
Meat and Livestock Commission, PO Box 44, Queensway House, Bletchley, Milton Keynes MK2 2EF
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Live-weight growth and efficiency of food utilization of purebred Galloway, Luing and Welsh Black steers, and crossbred steers out of Blue-Grey and Hereford × Friesian dams by Aberdeen-Angus, Charolais, Devon, Hereford, Limousin, Lincoln Red, Simmental, South Devon and Sussex sires, were examined in two suckled calf fattening systems. In one system, autumn-born calves were purchased at 1 year of age and fattened during their second winter; the other system involved late winter-born calves, which were purchased at 7 months of age, overwintered on a cheap growing diet and fattened during their second summer. The trial involved a total of 1430 cattle and extended over 5 years (winter system) and 6 years (summer system).

Cattle were slaughtered as close as possible to a standard carcass subcutaneous fat concentration.

The data for crossbred and purebred cattle were analysed separately within the fattening system using least squares models, which included effects for year, sire breed and dam breed, and with regression on the age at beginning of the trial and carcass subcutaneous fat concentration estimated by visual appraisal.

Breed differences in live weight at slaughter were similar to those recorded in the Meat and Livestock Commission's on-farm recording work. Among crossbreds, the larger sire breeds consumed more food per day, generally grew faster and were older at slaughter.

They did not differ significantly in the efficiency with which food was converted into live-weight gain. Among the purebreds, the Luing had a relatively high daily food intake in relation to its growth rate and, together with the Welsh Black in the summer fattening system, was less efficient than the Galloway (P<0·05).

Type
Research Article
Information
Animal Production , Volume 35 , Issue 1 , August 1982 , pp. 87 - 98
Copyright
Copyright © British Society of Animal Science 1982

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References

REFERENCES

Allen, D. and Kilkenny, B. 1980. Planned Beef Production. Granada Publishing, London.Google Scholar
Fitzhugh, H. A. Jr and Taylor, ST. C. S. 1971. Genetic analysis of degree of maturity. J. Anim. Sci. 33: 717–725.CrossRefGoogle ScholarPubMed
Kempster, A. J. 1980. Fat partition and distribution in the carcasses of cattle, sheep and pigs: a review. Meat Sci. 5: 83–98.Google Scholar
Kempster, A. J., Cook, G. L. and Southgate, J. R. 1982. comparison of the progeny of British Friesian dams and different sire breeds in 16- and 24-month beef production systems. 2. Carcass characteristics, and rate and efficiency of meat gain. Anim. Prod. 34: 167–178.Google Scholar
Kempster, A. L. and Harrington, G. 1979. Variation the carcass characteristics of commercial British cattle of different breeds for slaughter at equal fatness. Meat Sci. 3: 53–62.Google Scholar
Kempster, A. J. and Owen, M. G. 1981. A note on the accuracy of an ultrasonic technique for selecting cattle of different breeds for slaughter at equal fatness. Anim. Prod. 32: 113–115.Google Scholar
Limousin and Simmental Tests Steering Committee. 1976. Report of the evaluation of the first importation into Great Britain in 1970/71 of Limousin bulls from France and Simmental bulls from Germany and Switzerland. Her Majesty's Stationery Office, London.Google Scholar
Meat and Livestock Commission. 1979. Data summaries on beef production and breeding. Meat and Livestock Commission, Bletchley, Milton Keynes.Google Scholar
Southgate, J. R., Cook, G. L. and Kempster, A. J. 1982. comparison of the progeny of British Friesian dams and different sire breeds in 16- and 24-month beef production systems. 1. Live-weight gain and efficiency of food utilization. Anim. Prod. 34: 155–166.Google Scholar
Webster, A. J. F., Smith, J. S. and Mollison, G. S. 1977. Prediction of the energy requirements for growth in beef cattle. 3. Body weight and heat production in Hereford × British Friesian bulls and steers. Anim. Prod. 24: 237–244.Google Scholar