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Body composition changes in lactating ewes estimated by serial slaughter and deuterium dilution

Published online by Cambridge University Press:  02 September 2010

R. T. Cowan ,
J. J. Robinson ,
J. F. D. Greenhalgh  and
I. McHattie
R. T. Cowan
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
J. J. Robinson
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
J. F. D. Greenhalgh
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
I. McHattie
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

Changes in body composition during lactation were measured in 12 Border Leicester × Scottish Blackface ewes by serial slaughter at 12, 41 and 111 days of lactation. Ewes suckled twin lambs and were given daily 1·6 kg dry matter of a complete diet containing 151 g crude protein and 10·2 MJ metabolizable energy/kg dry matter.

Live weights of ewes averaged 60·2, 58·9 and 55·8 kg at 12, 41 and 111 days of lactation respectively. There were no significant changes in weights of stomach, small and large intestine and liver.

The weight of body fat averaged 9·19, 2·28 and 1·19 kg at 12, 41 and 111 days respectively (P < 0·001) and weight of ash increased from 1·72 kg at 12 days to 2·30 kg at 111 days (P < 0·001). Water to protein ratios at the three stages of lactation were 2·94, 3·36 and 3·18 (P < 0·10). The energy value of weight loss varied from 68 to 17 MJ/kg, depending on the relative changes in total body water and fat. Live-weight change was therefore a poor indicator of change in body energy during early lactation.

Body fat could be predicted from its combined relationships with live weight and total body water (residual s.d. ±0·70 kg), but when deuterium oxide space was used to estimate body water separate equations were necessary for early and later stages of lactation. This was apparently due to differences between stages of lactation in the time required for deuterium oxide to equilibrate with water in the reticulo-rumen.

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Type
Research Article
Information
Animal Production , Volume 29 , Issue 1 , August 1979 , pp. 81 - 90
Copyright
Copyright © British Society of Animal Science 1979

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References

REFERENCES

Atkinson, T., Fowler, V. R., Garton, G. A. and Lough, A. K. 1972. A rapid method for the accurate determination of lipid in animal tissues. Analyst, Lond. 97: 562–568.CrossRefGoogle ScholarPubMed
Blaxter, K. L. 1962. The fasting metabolism of adult wether sheep. Br. J. Nutr. 16: 615–626.CrossRefGoogle ScholarPubMed
Burton, J. H., Anderson, M. and Reid, J. T. 1974. Some biological aspects of partial starvation. The effect of weight loss and regrowth on body composition in sheep. Br. J. Nutr. 32: 515–527.CrossRefGoogle ScholarPubMed
Crabtree, R. M., Houseman, R. A. and Kay, M. 1974. The estimation of body composition in beef cattle by deuterium oxide dilution. Proc. Nutr. Soc. 33: 74A–75A (Abstr.).Google ScholarPubMed
Davidson, J., Mathieson, J. and Boyne, A. W. 1970. The use of automation in determining nitrogen by the Kjeldahl method, with final calculations by computer. Analyst, Lond. 95: 181–193.CrossRefGoogle ScholarPubMed
Degen, A. A. 1977. Fat-tailed Awassi and German Mutton Merino sheep under semiarid conditions. 2. Total body water and water turnover during pregnancy and lactation. J. agric. Sci., Camb. 88: 699–704.CrossRefGoogle Scholar
Fell, B. F., Campbell, R. M., MacKie, W. S. and Weekes, T. E. C. 1972. Changes associated with pregnancy and lactation in some extra-reproductive organs of the ewe. J. agric. Sci., Camb. 79: 397–407.CrossRefGoogle Scholar
Foot, J. Z. and Greenhalgh, J. F. D. 1970. The use of deuterium oxide space to determine the amount of body fat in pregnant Blackface ewes. Br. J. Nutr. 24: 815–825.CrossRefGoogle ScholarPubMed
Gibb, M. J. and Treacher, T. T. 1978. The effect of herbage allowance on herbage intake and performance of ewes and their twin lambs grazing perennial ryegrass. J. agric. Sci., Camb. 90: 139–147.CrossRefGoogle Scholar
Graham, N. McC. and Williams, A. J. 1962. The effects of pregnancy on the passage of food through the digestive tract of sheep. Aust. J. agric. Res. 13: 894–900.Google Scholar
Hight, G. K. and Barton, R. A. 1965. The effects of undernutrition and re-alimentation on the Romney ewe. J. agric. Sci., Camb. 64: 413–424.CrossRefGoogle Scholar
Houseman, R. A., Robinson, J. J. and Fraser, C. 1978. The estimation of body water and fat in pregnant ewes using deuterium oxide. Proc. Nutr. Soc. 37: 64A (Abstr.).Google ScholarPubMed
MacFarlane, W. B. and Howard, B. 1972. Comparative water and energy economy of wild and domestic mammals. Symp. zool. Soc. Lond. 31: 261–296.Google Scholar
Ørskov, E. R. 1977. Nitrogen digestion and utilization by young and lactating ruminants. Wld Rev. Nutr. Diet. 26: 225–257.CrossRefGoogle Scholar
Reid, J. T., Bensadoun, A., Paladines, O. L. and Van niekerk, B. D. H. 1963. Body water estimations in relation to body composition and indirect calorimetry in ruminants. Ann. N.Y. Acad. Sci. 110: 327–342.CrossRefGoogle ScholarPubMed
Robelin, J. 1977. In vivo prediction of lamb body composition using heavy water space. Annls Biol. anim. Biochim. Biophys. 17: 95–105.CrossRefGoogle Scholar
Russel, A. J. F., Doney, J. M. and Gunn, R. G. 1971. The distribution of chemical fat in the bodies of Scottish Blackface ewes. Anim. Prod. 13: 503–509.Google Scholar
Siebert, B. D. 1971. Growth and water metabolism of cows and progeny on fertilized and unfertilized tropical pastures. Aust. J. agric. Res. 22: 415–428.CrossRefGoogle Scholar
Smith, B. S. W. and 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. J. agric. Sci., Camb. 82:105–112.CrossRefGoogle Scholar
Sykes, A. R. 1974. The prediction of the body composition of hill sheep from body weight, red cell volume and tritiated water space. J. agric. Sci., Camb. 82: 269–275.CrossRefGoogle Scholar
Sykes, A. R., Field, A. C. and Gunn, R. G. 1974. Effects of age and state of incisor dentition on body composition and lamb production of sheep grazing hill pastures. J. agric. Sci., Camb. 83: 135–143.CrossRefGoogle Scholar
Trigg, T. E., Miller, T. B. and Topps, J. H. 1974. Chemical composition of body-weight changes in lactating beef cows. Proc. Nutr. Soc. 33: 75A–76A (Abstr.).Google ScholarPubMed
Turner, M. D., Neely, W. A. and Hardy, J. D. 1960. Rapid determination of deuterium oxide in biological fluids. J. appl. Physiol. 15: 309–310.CrossRefGoogle ScholarPubMed