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Estimation of body water and fat in cattle using tritiated water space and live weight with particular reference to the influence of breed

Published online by Cambridge University Press:  27 March 2009

P. R. N. Chigaru  and
D. H. Holness
P. R. N. Chigaru
Affiliation:
Department of Animal Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe
D. H. Holness
Affiliation:
Henderson Research Station, Department of Research and Specialist Services, Ministry of Agriculture, Private Bag 2004, Mazowe, Zimbabwe
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Summary

The body composition of 18 each of Mashona, Afrikaner and Hereford heifers was measured at the beginning and after 16 and 32 weeks of the experiment. The heifers not slaughtered at the beginning of the experiment were fed a complete diet containing 132 g crude protein and 12·0 MJ metabolizable energy/kg dry matter. Before slaughter, the animals were deprived of food and water for 24 h. Each animal was infused with 1 mCi of tritiated water (TOH) in order to measure total body water (TBW) and to estimate body fat.

The growth rate of the three breeds of heifers was similar despite differences in age and initial live weight. Both TBW and fat proportions, however, differed significantly (P < 0·01) between slaughter stages for each breed and between breeds at each slaughter stage. At the first, second and final slaughter stages the proportions of TBW were: 68·0, 59·4 and 54·5% for Mashona; 70·;5, 64·3 and 58·3% for Afrikaner and 65·3, 57·6 and 46·2% for Hereford heifers respectively. The corresponding proportions of body fat were: 10·2, 18·4 and 24·2% for Mashona; 6·6, 12·0 and 20·0% for Afrikaner and 13·7, 20·8 and 25·8% for Hereford heifers respectively.

There was a close relation between empty body weight and live weight at slaughter which was not influenced by breed. Both TBW and fat were estimated more accurately when TOH space and live weight were used jointly. However, the slopes of the prediction equations for each breed were significantly different (P < 0·05) in the case of both total body water and fat. It was necessary to use separate equations for each breed in order to predict either body water or fat. The significance of these findings for the estimation of body fat in live cattle is discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 101 , Issue 2 , October 1983 , pp. 257 - 264
Copyright
Copyright © Cambridge University Press 1983

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References

Chigaru, P. R. N. & Topps, J. H. (1981). The composition of body weight changes in underfed lactating beef cows. Animal Production 32, 95–103.Google Scholar
Cowan, R. J., Robinson, J. J., Greenhalgh, J. F. D. & McHattie, I. (1979). Body composition changes in lactating ewes by serial slaughter and deuterium dilution. Animal Production 29, 81–90.Google Scholar
Crabtree, R. M., Houseman, R. A. & Kay, M. (1974). The estimation of body composition in cattle by deuterium oxide dilution. Proceedings of the Nutrition Society 33, 74A–75A (Abstract).Google ScholarPubMed
Degen, A. A. & Young, B. A. (1980). Live weight, total body water and maternal body solid changes in pregnant and lactating beef cows. Journal of Agricultural Science, Cambridge 95, 1–5.CrossRefGoogle Scholar
Foot, J. Z. & Greenhalgh, J. F. D. (1970). The use of deuterium oxide space to determine the amount of body fat in pregnant Blackface ewes. British Journal of Nutrition 24, 815–825.CrossRefGoogle ScholarPubMed
Foot, J. Z., Skedd, E. & McFarlane, D. N. (1979). Body composition in lactating sheep and ius indirect measurement in the live animal using tritiated water. Journal of Agricultural Science, Cambridge 92, 69–81.CrossRefGoogle Scholar
Houseman, R. A., Robinson, J. J. & Fraser, C. (1978). The estimation of body water and fat in pregnant ewes using deuterium oxide. Proceedings of the Nutrition Society 37, 64A (Abstract).Google ScholarPubMed
Little, D. A. & McLean, R. W. (1981). Estimation of the body chemical composition of live cattle varying widely in fat content. Journal of Agricultural Science, Cambridge 96, 213–220.CrossRefGoogle Scholar
Little, D. A. & Morris, J. G. (1972). Prediction of the body composition of live cattle. Journal of Agricultural Science, Cambridge 78, 505–508.CrossRefGoogle Scholar
Morris, J. G. & Moir, K. W. (1963). Methods of determining the chemical composition of dead animals. In Symposium on Carcass Composition and Appraisal of Meat Animals (ed. Tribe, D. E.), pp. 2–1 to 2–22. C.S.I.R.O. Melbourne, Australia.Google Scholar
O'Donovan, W. M. & Elliott, R. C. (1971). Developmental changes in the bodies of Dorper sheep. 1. Changes in live body weight, body weight, body proportions and composition of weaned Dorper lambs given different amounts of food. Rhodesian Journal of Agricultural Research 9, 65–75.Google Scholar
Reid, J. T., Bensadoun, A., Bull, L. S., Burton, J. H., Gleeson, P. A., Han, I. K., Joo, Y. D., Johnson, D. E., McManus, W. R., Paladines, O. L., Stroud, J. W., Tyrell, H. F., Van Niekerk, B. D. H. & Wellington, G. W. (1968). Some peculiarities in the body composition of animals. In Body Composition in Animals and Man, pp. 19–44. Publications National Research Council (Washington), no. 1598.Google Scholar
Searle, T. W. (1970). Body composition in lambs and young sheep and its prediction in vivo from tritiated water space and body weight. Journal of Agricultural Science, Cambridge 82, 269–275.Google Scholar
Smith, B. S. W. & Sykes, A. R. (1974). The effect of route of dosing and method of estimation of tritiated water space on the determination of total body water and the prediction of body fat in sheep. Journal of Agricultural Science, Cambridge 82, 105–112.CrossRefGoogle Scholar
Trigg, T. E., Miller, T. B. & Topps, J. H. (1974). Chemical composition of body weight changes in lactating beef cows. Proceedings of the Nutrition Society 33, 75A–76A (Abstract).Google ScholarPubMed