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Infertile bulls versus steers: III. Carcass characteristics

Published online by Cambridge University Press:  27 March 2009

M. A. Price
M. A. Price
Affiliation:
Department of Livestock Husbandry, University of New England, Armidale, N.S.W., Australia
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Summary

The carcass characteristics of a total of 43 infertile bulls were oompared with those of 42 steers from five independent trials. In most cases there was no significant difference between the bulls and the steers for dressing percentage, or fleshing index. Bulls were generally found to have greater hide percentages than steers, the difference being very highly significant (P < 0·001) in one of the trials and significant (P < 0·05) in another. Eye musole area expressed relative to caroass weight was greater in the bulls, the difference being significant (P < 0·05) in three of the trials. The depth of fat over the eye musole and the hind to fore-quarter weight ratio were greater in the steer carcasses. Head weights were found to be significantly greater (P < 0·05) and caul and kidney fat weights less (P < 0·05) in bulls than in steers in the one trial where these parameters could be measured.

Carcass composition was estimated by the three-rib sample joint teohnique in four of the trials, and in these the bulls had a greater percentage of bone and muscle, but a lower peroentage of fat than the steers, the differences being significant in most oases. In the fifth trial composition was estimated by half carcass dissection. This, too, showed bulls to have a greater percentage of bone and muscle and a lower percentage of fat, the differences being highly significant (P < 0·01) and very highly significant (P < 0·001) respectively. On a fat-corrected basis the estimated retail value of the carcasses favoured the bulls by about $20.00 each.

The studies, conducted over a range of nutritional conditions, showed that non-castration favoured muscle growth while suppressing fat deposition, and that this advantage was more pronounced when growth rates were high.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 77 , Issue 2 , October 1971 , pp. 317 - 323
Copyright
Copyright © Cambridge University Press 1971

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References

Aitken, J. N., Preston, T. R., Macdearmid, A. & Phillip, , Euphemia, B. (1963). Intensive beef production: bulls versus steers. Anim. Prod. 5, 215.Google Scholar
Arthaud, V. H., Adams, D. H., Jacobs, D. R. & Koch, R. M. (1969). Comparison of carcase traits of bulls and steers. J. Anim. Sci. 28, 742.CrossRefGoogle Scholar
Bailey, C. M., Peobert, C. L., Richardson, , Paula, , Bohman, V. R. & Chancerelle, , Julianne, (1966). Quality factors of the Longissimus dorsi of young bulls and steers. J. Anim. Sci. 25, 504.CrossRefGoogle Scholar
Bojarskii, L. G. (1964). The effectiveness of fattening entire bull calves. Anim. Breed. Abstr. 32, no. 2751.Google Scholar
Beännäng, E. (1966). Carcase composition of Swedish cattle breeds. Anim. Breed. Abstr. 34, no. 2822.Google Scholar
Champagne, J. R., Carpenter, J. W., Hentges, J. F., Palmer, A. Z. & Cunha, T. J. (1964). Effects of age at castration on feedlot performance and characteristics of bulls and steers. J. Anim. Sci. 23, 859.Google Scholar
Dickii, N. & Astahova, M. (1962). Comparative fattening of bulls and steers. Anim. Breed. Abstr. 31, no. 97.Google Scholar
Field, R. A., Schoonover, C. O. & Nelms, C. E. (1964). Performance data, carcase yield and consumer acceptance of retail cuts from steers and bulls. Univ. Wyo. agric. Stn Bull. no. 417.Google Scholar
Forrest, R. J. (1966). The production of beef by Holstein Friesian bulls and steers. 9th Int. Congr. Anim. Prod. Edinburgh.Google Scholar
Gerhard, F. (1964). Meat Technology. London: Leonard Hill.Google Scholar
Hankins, O. G. & Howe, P. E. (1946). Estimation of the composition of beef carcases and cuts. V.S.D.A. Tech. Bull. no. 926.Google Scholar
Harte, F. J. (1969). The production of beef from young bulls. Anim. Prod. 11, 286.Google Scholar
Harte, P. J. & Curran, S. (1967). The production of beef from young bulls. II. Ir. J. agric. Res. 6, 101.Google Scholar
Ivanov, P. & Zahariev, Z. (1964). Intensive fattening of Kula bull calves and steers. Anim. Breed. Abstr. 34, no. 1042.Google Scholar
Joubert, D. M. & Dreyer, J. H. (1965). Bull versus steer on a moderate plane of nutrition in a group feeding trial. Proc. S. Afr. Soc. Anim. Prod. 1965, 151.Google Scholar
Klosterman, E. W., Kunkle, L. E., Gerlaugh, P. & Cahill, V. R. (1954 a). The effect of age of castration upon rate and economy of gain and carcase quality of beef calves. J. Anim. Sci. 13, 817.Google Scholar
Klosterman, E. W., Kunkle, L. E., Gerlaugh, P. & Cahill, V. R. (1954 b). Bull calves make more rapid gains than steers in feedlot. Ohio Fm Home Res. 39, 77.Google Scholar
Kneebone, H., Marks, T., McMeekan, C. P. & Walker, D. G. (1950). Evaluation of the chiller beef carcase. N.Z. Jl Sci. Technol. agric. 31 A, 3.Google Scholar
Kocenov, D. A. (1962). The effect of castration at various ages on growth and beef character of young cattle. Anim. Breed. Abstr. 32, no. 1840.Google Scholar
Kruger, L., Meyer, F. & Wassmuth, R. (1967). Investigations of the problem of production and evaluation of beef. 2. Growth intensity and carcase value of young bulls of the same age. Anim. Breed. Abstr. 35, no. 3322.Google Scholar
Lewis, P. K., Brown, C. J. & Heck, M. C. (1965). Effects of preslaughter treatment and castration on certain organoleptic and carcase characteristics of beef. Bull. Ark. agric. Exp. Stn 697.Google Scholar
Prescott, J. H. D. & Lamming, G. E. (1964). The effects of castration on meat production in cattle. J. agric. Sci., Camb. 63, 341.Google Scholar
Price, M. A. (1971). Infertile bulls versus steers. IV. Meat quality, J. agric. Sci., Camb. 77, 325.CrossRefGoogle Scholar
Price, M. A. & Yeates, N. T. M. (1971 a). Infertile bulls versus steers. I. The influence of level of nutrition on relative growth rate. J. agric. Sci., Camb. 77, 307.Google Scholar
Price, M. A. & Yeates, N. T. M. (1971 b). Infertile bulls versus steers. II. Feed conversion efficiency and the effects of a high fat diet. J. agric. Sci. Camb. 77, 313.Google Scholar
Richter, K., Cranz, K. L. & Schmidt, K. H. (1960). Fattening experiments with young bulls and steers. Züchtungskunde 32, 217.Google Scholar
Robertson, I. S., Wilson, J. C. & Morris, P. G. D. (1967). Growth in castrated cattle. Vet. Rec. 81, 88.Google Scholar
Seebeck, R. M. (1963). The relations between body weight, carcase weight and dressing percentage. Paper: Technical Conference on Carcase Composition and Appraisal in Meat Animals: Melbourne.Google Scholar
Sevenko, M. I. (1967). The effect of castration on fat formation in the body of Black Pied cattle. Anim. Breed. Abstr. 36, no. 2346.Google Scholar
Turton, J. D. (1962). The effect of castration on meat production and quality in cattle, sheep and pigs. Anim. Breed. Abstr. 30, 447.Google Scholar
Turton, J. D. (1969). The effect of castration on meat production from cattle, sheep and pigs. In Meat Production from Entire Male Animals. Ed. Rhodes, D. N.. London: J. and A. Churchill Ltd.Google Scholar
Warwick, E. J. (1966). Genetic improvement in beef cattle. In Introduction to Livestock Production. Ed. Cole, H. H.. San Francisco and London: W. H. Freeman and Co.Google Scholar
Wawrzynkzak, S. (1965). The effect of partial castration on the fattening of young bulls. Anim. Breed. Abstr. 34, no. 3370.Google Scholar
Witt, M. & Andreae, U. (1965). Effects of castration in male monozygotic cattle twins. Anim. Breed. Abstr. 33, no. 2082.Google Scholar
Yeates, N. T. M. (1959). Slide rule for judging and grading beef carcases. J. Aust. Inst. agric. Sci. 25, 302.Google Scholar
Yeates, N. T. M. (1965). Modern Aspects of Animal Production. Butterworths: London.Google Scholar