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Development of body components in Kenana cattle. 2. Relative weight changes of major carcass tissues

Published online by Cambridge University Press:  27 March 2009

E. S. E. Gaili  and
A. F. Y. M. Nour
E. S. E. Gaili
Affiliation:
Faculty of Veterinary Science, P.O. Box 32, Khartoum North, Sudan
A. F. Y. M. Nour
Affiliation:
Faculty of Veterinary Science, P.O. Box 32, Khartoum North, Sudan
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Summary

Thirty-two weaned Kenana bull calves were adequately fed to maximize growth and serially slaughtered at predetermined live weights of 100, 200, 300 and 400 kg. Eight animals were slaughtered at each slaughter point and the left side of each carcass dissected into individual muscles, bone, fat, tendons and fascia. Individual muscles were grouped into nine muscle groups and the distribution of intermuscular fat was studied in four anatomical regions. Huxley's (1932) allometric equation was used to describe the development of carcass tissues.

Relative to overall carcass side growth, fat was the fastest developing tissue, followed by muscle and bone tissues in descending order. The muscles of neck + thorax and abdominal muscles exhibited the fastest rate of growth relative to overall total side muscle growth, and the distal muscles of both limbs exhibited the slowest rate of relative growth. Relative to the rate of side fat deposition throughout the experiment, subcutaneous fat was deposited at a faster rate than intermuscular or kidney + channel fat. Intermuscular fat was deposited at different rates in the anatomical regions of the carcass.

The development of muscle groups was further examined in three arbitrary phases of the test period and revealed significant differences between phases in the rate at which each muscle group developed. Similar changes in the intensity of the rate at which fat was deposited in the subcutaneous region and between the muscles of the carcass or sites were evident.

Kenana cattle compare favourably with foreign dairy and beef breeds of cattle in muscle:bone ratio. Further studies are needed to evaluate the efficiency of meat production from Kenana cattle under different systems of management.

As reported in Part 1 (Gaili & Nour, 1980) a study was conducted to investigate the development of body components in Kenana cattle and to evaluate the potential of the breed for meat production. This paper is an account of the data which were obtained on the development of carcass tissues.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 94 , Issue 2 , April 1980 , pp. 263 - 269
Copyright
Copyright © Cambridge University Press 1980

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References

Anon, . (1966). A comparison of the growth of different types of cattle for beef production. Report of Major Beef Research Project, pp. 21, 51. London: The Royal Smithfield Club.Google Scholar
Berg, R. T. & Butterfield, R. M. (1966). Muscle: bone ratio and fat percentage as measures of beef carcass composition. Animal Production 8, 1–11.Google Scholar
Brungardt, V. H. (1968). Changes in the composition during maturation of Holstein steers. Proceedings of the 21st Annual Reciprocal Meal Conference, pp. 115–133. American Meat Science Association.Google Scholar
Butterfield, R. M. (1963). Relative growth of the musculature of the ox. In Carcass Composition and Appraisal of Meat Animals. Technical Conference, University of Melbourne (ed. Tribe, D. E.) p. 7–1. East Melbourne: C.S.I.R.O.Google Scholar
Butterfield, R. M. & Berg, R. T. (1966). Relative growth patterns of commercially important muscle groups of cattle. Research in Veterinary Science 7, 389–393.CrossRefGoogle ScholarPubMed
Butterfield, R. M. & May, N. D. S. (1965). Muscles of the Ox. Brisbane, Australia: University of Queensland Press.Google Scholar
Gaili, E. S. E. (1978). Relative weight changes in carcass tissues of Western Sudan Baggara bulls. Journal of Agricultural Science, Cambridge 90, 637–638.CrossRefGoogle Scholar
Gaili, E. S. E. & Nour, A. F. Y. M. (1980). Development of body components in Kenana cattle. 1. Development of carcass and non-carcass components of the body. Journal of Agricultural Science, Cambridge 94, 257–262.CrossRefGoogle Scholar
Huxley, J. (1932). Problems of Relative Growth. London: Methuen.Google Scholar
Johnson, E. R., Butterfield, R. M. & Pryor, W. J. (1972). Studies of fat distribution in bovine carcasses. I. The partition of fatty tissues between depots. Australian Journal of Agricultural Research 23, 381–388.CrossRefGoogle Scholar
Mukhoty, H. & Berg, R. T. (1971). Influence of breed and sex on the allometric growth patterns of major bovine tissues. Animal Production 13, 219–227.Google Scholar
Rowe, R. W. D. (1968). Effect of castration on muscle growth in the mouse. Journal of Experimental Zoology 169, 59–64.CrossRefGoogle ScholarPubMed
Seebeck, R. M. & Tulloh, N. M. (1968). Developmental growth and body weight loss of cattle. III. Dissected components of commercially dressed carcass, following anatomical boundaries. Australian Journal of Agricultural Research 19, 673–688.CrossRefGoogle Scholar
Snedecor, G. W. (1956). Statistical Methods (5th ed.). Ames, Iowa: Iowa State University Press.Google Scholar
Tulloh, N. M. (1963). The carcass composition of sheep, cattle and pigs as functions of body weight. In Carcass composition and Appraisal of Meat Animals. Technical Conference, University of Melbourne (ed. Tribe, D. E.), pp. 5–1 to 5–30. East MelbourneC.S.I.R.O.Google Scholar