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Body composition changes in goats during early lactation estimated using a two-pool model of tritiated water kinetics

Published online by Cambridge University Press:  09 March 2007

F. R. Dunshea ,
A. W. Bell  and
T. E. Trigg
F. R. Dunshea
Affiliation:
School of Agriculture, La Trobe University, Bundoora, Victoria 3083, Australia
A. W. Bell
Affiliation:
School of Agriculture, La Trobe University, Bundoora, Victoria 3083, Australia
T. E. Trigg
Affiliation:
Animal and Irrigated Pastures Research Institute, Kyabram, Victoria 3620, Australia
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Abstract

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A two-pool model of tritiated water kinetics was used to estimate the major body water pools, and hence body composition, in goats at days 10, 38 and 76 of lactation. Between days 10 and 38 of lactation goats were, on average, in negative calculated energy balance and were estimated to have mobilized 59 g body fat stores/d. Mean calculated energy balance over days 38–76 of lactation was slightly positive and there was little change in estimated body fat. Gut fill increased over the early part of lactation when goats were mobilizing body fat. Consequently, live weight did not differ at any stage of lactation and did not provide a good index of body fat status of the goats. There were also no significant differences in empty-body-weight, water, protein, ash or fat-free mass at the three stages of lactation. As average calculated energy balance and changes in energy stored as fat were highly correlated, it is concluded that the two-pool model of tritiated water kinetics is a useful means of serially estimating changes in body fat content in unfasted lactating goats.

Keywords

Body compositionFat mobilizationLactationGoat
Type
Lactation in Ruminants
Information
British Journal of Nutrition , Volume 64 , Issue 1 , July 1990 , pp. 121 - 131
Copyright
Copyright © The Nutrition Society 1990

References

Agricultural Research Council (1980). The Nutrient Requirements of Ruminant Livestock. Slough: Commonwealth Agricultural Bureaux.Google Scholar
Armstrong, D. G. & Blaxter, K. L. (1965). Effects of acetic and propionic acids on energy retention and milk secretion in goats. In Energy Metabolism, pp. 59–72 [Blaxter, K. L., editor]. London: Academic Press.Google Scholar
Arnold, R. N., Hentges, R. J. & Trenkle, A. (1985). Evaluation of the use of deuterium oxide dilution technique for determination of body composition of beef steers. Journal of Animal Science 60, 1188–1200.CrossRefGoogle ScholarPubMed
Bines, J. A. (1979). Voluntary feed intake. In Feeding Strategies for the High Yielding Dairy Cow, pp. 23–28 [Broster, W. H. and Swan, H., editors]. London: Granada Press.Google Scholar
Byers, F. M. (1979). Measurement of protein and fat accretion in growing beef cattle through isotope dilution procedures. Ohio Beef Cattle Research Progress Report Series 79–1, pp. 36–47. Wooster, Ohio: Ohio Agricultural Research Development Centre.Google Scholar
Carnegie, A. B. & Tulloh, N. M. (1968). The in vivo determination of body water space in cattle using the tritium dilution technique. Proceedings of the Australian Society of Animal Production 7, 308–313.Google Scholar
Chew, B. P., Eisenman, J. R. & Tanaka, T. S. (1984). Arginine infusion stimulates prolactin, growth hormone, insulin and subsequent lactation in pregnant dairy cows. Journal of Dairy Science 67, 2507–2518.CrossRefGoogle ScholarPubMed
Corbett, J. L., Farrell, D. J., Leng, R. A., McClymont, G. L. & Young, B. A. (1971). Determination of the energy expenditure of penned and grazing sheep from estimates of carbon dioxide entry rate. British Journal of Nutrition 26, 277–291.CrossRefGoogle ScholarPubMed
Cowan, R. T., Robinson, J. J., McDonald, I. & Smart, R. (1980 a). Effects of body fatness at lambing and diet in lactation on body tissue loss, feed intake and milk yield of ewes in early lactation. Journal of Agricultural Science, Cambridge 95, 497–514.CrossRefGoogle Scholar
Cowan, R. T., Robinson, J. J., McHattie, I. & Fraser, C. (1980 b). The prediction of body composition in live ewes in early lactation from live weight and estimates of gut contents and total body water. Journal of Agricultural Science, Cambridge 95, 515–522.CrossRefGoogle Scholar
Cowan, R. T., Robinson, J. J., McHattie, I. & Pennie, K. (1981). Effects of protein concentration in the diet on milk yield, change in body composition and the efficiency of utilization of body tissues for milk production in ewes. Animal Production 33, 111–120.Google Scholar
Dunshea, F. R., Bell, A. W., Chandler, K. D. & Trigg, T. E. (1988 a). A two pool model of tritiated water kinetics to predict body composition in unfasted lactating goats. Animal Production 47, 435–445.Google Scholar
Dunshea, F. R., Bell, A. W. & Trigg, T. E. (1988 b). Relations between plasma non-esterified fatty acid metabolism and body tissue mobilization during chronic undernutrition in goats. British Journal of Nutrition 60, 633–644.CrossRefGoogle ScholarPubMed
Dunshea, F. R., Bell, A. W. & Trigg, T. E. (1989). Relations between plasma non-esterified fatty acid metabolism and body fat mobilization in primiparous lactating goats. British Journal of Nutrition 62, 51–61.CrossRefGoogle ScholarPubMed
Dunshea, F. R., Bell, A. W. & Trigg, T. E. (1990). Non-esterified fatty acid and glycerol kinetics and fatty acid re-esterification in goats during early lactation. British Journal of Nutrition 64, 133–145.CrossRefGoogle ScholarPubMed
Ferrell, C. L. & Jenkins, T. G. (1984). Relationships among various body components of mature cows. Journal of Animal Science 58, 222–233.CrossRefGoogle ScholarPubMed
Flatt, W. P., Moore, L. P., Hooven, N. W. & Plowman, R. D. (1965). Energy metabolism studies with a high producing dairy cow. Journal of Dairy Science 48, 797 Abstr.Google 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 its indirect measurement in the live animal using tritiated water. Journal of Agricultural Science, Cambridge 92, 69–81.CrossRefGoogle Scholar
Hecker, J. F. (1974). Experimental Surgery on Small Ruminants. London: Butterworths.Google Scholar
Linzell, J. L. (1966). Infusion and blood sampling techniques for use in minimally restrained goats. Journal of Physiology 186, 79P–81P.Google ScholarPubMed
Ministry of Agriculture, Fisheries and Food (1975). Energy Allowances and Feeding Systems for Ruminants. Technical Bulletin no. 33. London: H.M. Stationery Office.Google Scholar
Moe, P. W. (1981). Energy metabolism of dairy cattle. Journal of Dairy Science 64, 1120–1139.CrossRefGoogle ScholarPubMed
Odwongo, W. O., Conrad, H. R. & Staubus, A. E. (1984). The use of deuterium oxide for the prediction of body composition in live dairy cattle. Journal of Nutrition 114, 2127–2137.CrossRefGoogle ScholarPubMed
Panaretto, B. A. (1963). Body composition in vivo. I. The estimation of total body water with antipyrine and the relation of total body water to total body fat in ruminants. Australian Journal of Agricultural Research 14, 594–601.CrossRefGoogle Scholar
Panaretto, B. A. & Till, A. R. (1963). Body composition in vivo. II. The composition of mature goats and its relationship to the antipyrine, tritiated water, and N-acetyl-4-aminoantipyrine spaces. Australian Journal of Agricultural Research 14, 926–943.CrossRefGoogle Scholar
Reid, J. T., Wellington, G. H. & Dunn, H. O. (1955). Some relationships among the major chemical components of the bovine body and their application to nutritional investigations. Journal of Dairy Science 38, 1344–1359.CrossRefGoogle Scholar
Robelin, J. (1977). Estimation in vivo de la composition corporelle des agneaux á partir de l'espace de diffusion de l'eau lourde. (In vivo prediction of lamb body composition using heavy water space) Annales de Biologie Animale, Biochimie et Biophysique 17, 95–105.CrossRefGoogle Scholar
Ross, G. J. S. (1980). MLP: Maximum Likelihood Program (Version3.06). Rothamsted: Rothamsted Experimental Station.Google Scholar
Ryan, T. A. Jr, Joiner, B. L. & Ryan, B. F. (1985). Minitab: Version 5.1. Massachusetts: Duxbury Press.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 74, 357–362.CrossRefGoogle Scholar
Shipley, R. A. & Clark, R. E. (1972). Tracer Methods for in vivo Kinetics. New York: Academic Press.Google Scholar
Statistical Analysis System (1982). SAS User's Guide: Statistics. Cary, NC: SAS Institute Inc.Google Scholar
Steine, T. A. (1975). Faktorar med innverknad pa okonomisk viktage eigenskaper hos geit. (Factors affecting economically important traits in goats.) Meldinger fra Norges Landhrukshogskole 54, 1–30.Google Scholar
Trigg, T. E., Domingo, E. A. & Topps, J. H. (1978). A comparison of three different isotopic methods for measuring body components of sheep. Journal of the Science of Food and Agriculture 29, 1007–1016.CrossRefGoogle ScholarPubMed
Tyrell, H. F. & Reid, J. T. (1965). Prediction of the net energy value of cow's milk. Journal of Dairy Science 48, 1215–1223.CrossRefGoogle Scholar
Vermorel, M., Bocquier, F., Vernet, J. & Brelurut, A. (1987). Mobilization and reconstitution of body reserves in dairy ewes studied by indirect calorimetry and D2O dilution technique. In Energy Metabolism of Farm Animals, pp. 314–317 [Moe, P. W., Tyrell, H. F. and Reynolds, P. J., editors]. New Jersey: Rowman and Littlefield.Google Scholar