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The respiratory quotient in relation to fat deposition in fattening–growing pigs

Published online by Cambridge University Press:  09 March 2007

Kirsten Jakobsen  and
Grete Thorbekt
Kirsten Jakobsen
Affiliation:
National Institute of Animal Science, Department of Animal Physiology and Biochemistry, Foulum, PO Box 39, DK-8830 Tjele, Denmark
Grete Thorbekt
Affiliation:
National Institute of Animal Science, Department of Animal Physiology and Biochemistry, Foulum, PO Box 39, DK-8830 Tjele, Denmark
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Abstract

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The relationship between non-protein respiratory quotient (RQnp) and total fat retention (RFAT) or fat retained from synthesized carbohydrates (RFAT(CHO)) was evaluated from experiments with fattening–growing pigs in the live weight (LW) range from 45 to 120 kg. A commercial feed compound (31 g fat/kg) was fed at low (LI) or high (HI) feed intake in Expt 1, while a semi-purified diet (9.5 g fat/kg) was given without (LO) or with (HO) supplement of 90 g soya-bean oil/kg in Expt 2. RQnp was calculated from 24 h measurements of the gas exchange, RFAT from 7 d N and C balances and RFAT(CHO) from differences between RFAT and digested fat. The measurements showed that about 85 % of the total gas exchange was caused by oxidation of non-protein nutrients and the RQnp varied from 1.00 to 1.34. In Expt 1 RFAT increased with LW from 46 to 141 and from 199 to 335 g/d on LI and HI respectively, whilst in Expt 2 RFAT increased from 191 to 377 and from 267 to 511 g/d on LO and HO respectively. A pronounced linearity was found between RQnp and RFAT for all diets, but the curve for Expt 2 on HO had a lower position than the common curve for the other diets. By relating RQnp to RFAT(CHO) a common linear curve and regression equation could be established in spite of the great variation in dietary composition, intake of fat and fat deposition.

Keywords

24 h gas exchangeRespiratory quotientFat retentionLipogenesisPigs
Type
Metabolic Effects of Growth
Information
British Journal of Nutrition , Volume 69 , Issue 2 , March 1993 , pp. 333 - 343
Copyright
Copyright © The Nutrition Society 1993

References

REFERENCES

Acheson, K. J., Schutz, Y., Bessard, T., Ravussin, E. & Jequier, E. (1984). Nutritional influences on lipogenesis and thermogenesis after a carbohydrate meal. American Journal of Physiology 246, E62–E70.Google ScholarPubMed
Arner, P. (1990). Metabolism of fatty acids: an overview. In Obesity; Towards a Molecular Approach, pp. 159–172 [Bray, G. A., Ricquier, D. and Spiegelman, M., editors]. New York: Wiley Liss, Inc.Google Scholar
Askanazi, J., Carpentier, Y. A., Elwyn, D. H., Nordenstrom, J., Jeevanandam, M., Rosenbaum, S. H., Gump, F. E. & Kinney, J. M. (1980). Influence of total parental nutrition on fuel utilization in injury and sepsis. Annals of Surgery 191, 40–46.CrossRefGoogle ScholarPubMed
Benedict, F. G. & Lee, R. C. (1937). Lipogenesis in the Animal Body, With Special Reference to the Physiology of the Goose. Carnegie Institute Publication no. 489. Washington, DC: Carnegie Institute.Google Scholar
Brouwer, E. (1965). Report of sub-committee on constants and factors 3. Symposium on Energy Metabolism of the European Association of Animal Production. EAAP-Publication no. 11, pp. 441–443 [Blaxter, K. L., editor]. London, New York: Academic Press.Google Scholar
Christensen, K. (1969). Synthesis and deposition of intramuscular lipids in relation to the quality of pork. PhD Thesis, Royal Veterinary & Agricultural University, Copenhagen.Google Scholar
Christensen, K. (1973). Different levels of linoleic acid in the diet of pigs. 1. Changes in the fatty acid composition of lipids from plasma, adipose tissue, and skeletal muscle during the growth period. Zeitschrift für Tierphysiologie, Tierernährung itnd Futtermittelkunde 31, 317–332.CrossRefGoogle ScholarPubMed
Christensen, K. (1974). Different levels of linoleic acid in the diet of pigs. 2. The effect on the fatty acid composition of mitochondrial phospholipids and mitochondrial function. Zeitschrift für Tierphysiologie, Tierernährung und Futtermittelkunde 33, 10–20.Google ScholarPubMed
Christensen, K. (1985). Determination of linoleic acid requirements in slaughter pigs: daily gain, feed conversion efficiency, digestibility of nutrients, and nitrogen and energy metabolism as response factors. Report from the National Institute of Animal Science no. 577. Copenhagen: Landhusholdningsselskabet.Google Scholar
Christensen, K., Chwalibog, A, Henckel, S. & Thorbek, G. (1988). Heat production in growing pigs calculated according to the RQ and CN methods. Comparative Biochemistry and Physiology 91A, 463–468.CrossRefGoogle Scholar
Christensen, K. & Goel, V. D. (1972). The influence of various glucose and insulin concentrations on in vitro lipid synthesis by adipose tissue isolated from adult pigs. Internaiional Journal of Biochemistry 3, 591–597.Google Scholar
Elia, M. & Livesey, G. (1988). Theory and validity of indirect calorimetry during net lipid synthesis. American Journal of Clinical Nutrition 47, 591–607.CrossRefGoogle ScholarPubMed
Ferrannini, E. (1988). The theoretical bases of indirect calorimetry: a review. Metabolism 37, 287–301.CrossRefGoogle ScholarPubMed
Freund, R. J. & Littell, R. C. (1981). SAS for Linear Models. A Guide to the ANOVA and GLM Procedures. Cary, North Carolina: SAS Institute Inc.Google Scholar
Hood, R. L. & Allen, C. E. (1973). Lipogenic enzyme activity in adipose tissue during the growth of swine with different propensities to fatten. Journal of Nutrition 103, 353–362.CrossRefGoogle ScholarPubMed
King, R. F. G. J., Almond, D. J., Oxby, C. B., Holmfield, J. H. M. & Mcmahon, M. J. (1984). Calculation of short-term changes in body fat from measurement of respiratory gas exchange. Metabolism 33, 826–832.CrossRefGoogle ScholarPubMed
Livesey, G. & Elia, M. (1988). Estimation of energy expenditure, net carbohydrate utilization, and net fat oxidation and synthesis by indirect calorimetry: evaluation of errors with special reference to the detailed composition of fuels. American Journal of Clinical Nutrition 47, 608–628.CrossRefGoogle Scholar
Lusk, G. (1928). The Elements of the Science of Nutrition. London: W. B. Saunders.Google Scholar
Neergaard, L., Petersen, C. B. & Thorbek, G. (1969). Carbon determination in biological materials related to respiration trials. Zeitschrift, für Tierphysiologie, Tierernährung und Futtermittelkunde 25, 302–308.CrossRefGoogle ScholarPubMed
O'Hea, E. K. & Leveille, G. A. (1968). Lipid metabolism in isolated adipose tissue of the domestic pig (Susdomesticus). Comparative Biochemistry and Physiology 26, 1081–1089.CrossRefGoogle Scholar
Stoldt, W. (1952). Vorschlag zur Vereinheitlichung der Fettbestimmung in Lebensmitteln (Proposal for simplification of fat determination in food). Fette und Seifen 54, 206–207.CrossRefGoogle Scholar
Thorbek, G. (1969). Studies on energy metabolism in growing pigs. I. Construction and function of a new respiration plant for pigs. Report from the National Institute of Animal Science no. 373. Copenhagen: Landhusholdningsselskabet.Google Scholar
Thorbek, G. (1975). Studies on energy metabolism in growing pigs. II. Protein and fat gain in growing pigs fed different feed compounds. Efficiency of utilization of metabolizable energy for growth. Report from the National Institute of Animal Science no. 424. Copenhagen: Landhusholdningsselskabet.Google Scholar
Thorbek, G., Astrup, A., Henckel, S. & Lind, J. (1991). Heat production and oxidation of nutrients in non-obese subjects. Proceedings of the 12th Synipmium on Energy Metabolism of Farm Animals. EAAP Publication no. 58, pp. 408–411 [Wenk, C. and Boessinger, ]. Zurich: ETH.Google Scholar
Thorbek, G., Chwalibog, A. & Henckel, S. (1984). Nitrogen and energy metabolism in pigs of Danish Landrace from 20 to 120 kg live weight. Norm for protein and energy requirements for maintenance and growth. Report from the National Institute of Animal Science no. 563. Copenhagen: Landhusholdningsselskabet.Google Scholar