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The role of gut tissue in the energy metabolism of growing lambs fed forage or concentrate diets

Published online by Cambridge University Press:  09 March 2007

Esther J. Finegan ,
Jock G. Buchanan-Smith  and
Brian W. McBride
Esther J. Finegan
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario NIG 2WI, Canada
Jock G. Buchanan-Smith*
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario NIG 2WI, Canada
Brian W. McBride
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario NIG 2WI, Canada
*
*Corresponding author: Professor Jock G. Buchanan-Smith, fax +1 519 836 9873, email [email protected]
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Abstract

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The role of the gastrointestinal tract (GIT) in explaining the less efficient utilization of metabolizable energy (ME) in growing lambs fed forage rather than concentrate-based diets was investigated by feeding forage (legume–grass silage) and concentrate (whole shelled maize) diets, at isoenergetic intakes (ME basis), using five groups of lambs. One group of seven lambs was an initial slaughter group and of the two groups (eight lambs per group) fed each diet, one group was fed for 8 weeks, whereas the other group was fed for 16 weeks. All lambs were slaughtered between 18·5 and 20 h following their last meal. Retained energy (as a percentage of ME intake) was higher (concentrate-fed 28, forage-fed 17; P<0·001) for the concentrate-fed animals. Weight-specific mucosal O2 uptake (ml/g DM per h), measured in vitro, was 37 % higher for the forestomach (reticulum, rumen and omasum) and small intestine (jejunum) than for the abomasum and large intestine (caecum and colon), but there was no evidence for a diet effect (except colon; forage-fed 5·3, concentrate-fed 4·2; P=0·036). Total GIT heat loss was estimated as 14 (forage-fed) and 18 (concentrate-fed) % of the whole-body heat loss. Although the GIT did not contribute to increased thermogenesis in the forage-fed lambs in the present study, greater relative contribution of GIT tissue to whole-body mass, i.e. GIT as a percentage of empty-body weight(forage 7·6, concentrate 6·6; P<0·001) in the forage-fed animals supports a role for the GIT in contributing to higher thermogenesis observed in ruminants fed forage as opposed to concentrate diets.

Keywords

Gut energy metabolismForageConcentrate
Type
Research Article
Information
British Journal of Nutrition , Volume 86 , Issue 2 , August 2001 , pp. 257 - 264
Copyright
Copyright © The Nutrition Society 2001

References

Agriculture and Food Research Council (1993) Energy and Protein Requirements of Ruminants, Wallingford, Oxon.: CAB International.Google Scholar
Ainsworth, L, Heaney, DP, Fiser, PS, Langford, GA, Shrestha, JNB & Leger, DA (1990) Research and Technology for Increasing the Efficiency and Output of Lamb Production Systems. Technical Bulletin 1987-11E, Animal Research Centre Contribution 86–28, Ottawa, Ont.: Research Branch, Agriculture Canada.Google Scholar
Armstrong, DG & Blaxter, KL (1957) The utilization of acetic, propionic and butyric acids by fattening sheep. British Journal of Nutrition 11, 413–425.CrossRefGoogle ScholarPubMed
Association of Official Analytical Chemists (1990) Official Methods of Analysis, 15th ed., Washington, DC: AOAC.Google Scholar
Bailey, CB (1986) Growth of digestive organs and their contents in Holstein steers: Relation to body weight and diet. Canadian Journal of Animal Science 66, 653–661.CrossRefGoogle Scholar
Barker, SB & Summerson, WH (1941) The colorimetric determination of lactic acid in biological material. Journal of Biological Chemistry 138, 535–545.CrossRefGoogle Scholar
Blaxter, K (1989) Energy Metabolism in Animals and Man. Cambridge: Cambridge University Press.Google Scholar
Buchanan-Smith, JG & Yao, YT (1978) Non-protein nitrogen in corn silage: a partial characterization, its utilization in the rumen and effect upon digestibility and retention of nitrogen in lambs. Canadian Journal of Animal Science 58, 681–690.CrossRefGoogle Scholar
Buchanan-Smith, JG & Yao, YT (1981) Effect of additives containing lactic acid bacteria and/or hydrolytic enzymes with an antioxidant upon the preservation of corn or alfalfa silage. Canadian Journal of Animal Science 61, 669–680.CrossRefGoogle Scholar
Bull, LS, Reid, JT & Johnson, DE (1970) Energetics of sheep concerned with the utilization of acetic acid. Journal of Nutrition 100, 262–276.CrossRefGoogle ScholarPubMed
Burrin, DG, Ferrell, CL, Britton, RA & Bauer, M (1990) Level of nutrition and visceral organ size and metabolic activity in sheep. British Journal of Nutrition 64, 439–448.CrossRefGoogle ScholarPubMed
Burrin, DG, Ferrell, CL, Eisemann, JH, Britton, RA & Nienaber, JA (1989) Effect of level of nutrition on splanchnic blood flow and oxygen consumption in sheep. British Journal of Nutrition 62, 23–34.CrossRefGoogle ScholarPubMed
Dulphy, JP & Demarquilly, C (1981) Problemes particuliers aux ensilages (Problems specific to ensiled feeds). Prevision de la Valeur Nutritive des Aliments des Ruminants (Forecast of the Nutritive Value of Feeds for Ruminants), pp. 81–104. Versailles: INRA Publications.Google Scholar
Galletti, GC & Piccaglia, R (1988) Water determination in silages by Karl Fischer titration. Journal of the Science of Food and Agriculture 43, 1–7.CrossRefGoogle Scholar
Hadzija, O (1974) A simple method for the quantitative determination of muramic acid. Analytical Biochemistry 60, 512–517.CrossRefGoogle ScholarPubMed
Harmon, DL, Gross, KL, Krehbiel, CR, Kreikemeier, KK, Bauer, ML & Britton, RA (1991) Influence of dietary forage and energy intake on metabolism and acyl-CoA synthetase activity in bovine ruminal epithelial tissue. Journal of Animal Science 69, 4117–4127.CrossRefGoogle ScholarPubMed
Hofmann, RR (1988) Anatomy of the gastro-intestinal tract. In The Ruminant Animal, pp. 250–268. [Church, DC, editor]. Englewood Cliffs, NJ: Prentice Hall.Google Scholar
Huntington, GB (1990) Energy metabolism in the digestive tract and liver of cattle: influence of physiological state and nutrition. Reproduction, Nutrition, Développement 30, 35–47.CrossRefGoogle ScholarPubMed
Johnson, DE (1972) Heat increment of acetate and corn and effects of casein infusions with growing lambs. Journal of Nutrition 102, 1093–1100.CrossRefGoogle ScholarPubMed
Johnson, DE, Johnson, KA & Baldwin, RL (1990) Changes in liver and gastrointestinal tract energy demands in response to physiological workload in ruminants. Journal of Nutrition 120, 649–655.CrossRefGoogle ScholarPubMed
Kelly, JM, McBride, BW & Milligan, LP (1993a) In vitro ouabain-sensitive respiration and protein synthesis in ruminal epithelial papillae of Hereford steers fed either alfalfa or bromegrass hay once daily. Journal of Animal Science 71, 2799–2808.CrossRefGoogle ScholarPubMed
Kelly, JM, McBride, BW, Milligan, LP & Waldo, DR (1991) Oxygen consumption and the energy costs of Na+-transport in the rumen of Holstein–Friesian steers. Proceedings of the New Zealand Society of Animal Production 51, 123–127.Google Scholar
Kelly, JM, Southorn, BG, Kelly, CE, Milligan, LP & McBride, BW (1993b) Quantification of in vitroin vivo energy metabolism of the gastrointestinal tract of fed and fasted sheep. Canadian Journal of Animal Science 71, 855–868.CrossRefGoogle Scholar
Kelly, JM, Vaage, AS, Milligan, LP & McBride, BW (1995) In vitro ouabain-sensitive respiration and protein synthesis in rumen epithelial papillae of Hereford steers fed either timothy hay or timothy hay supplemented with cracked corn once daily. Journal of Animal Science 73, 3775–3784.CrossRefGoogle ScholarPubMed
McBride, BW & Early, RJ & Ball, RO (1989) Protein synthesis and the energy costs of Na+,K+-transport in tissues of somatotropin treated steers. In Energy Metabolism of Farm Animals, European Association for Animal Production. Publication no. 43, pp. 107–111. [Van Der Honing, Y and Close, WH, editors]. Wageningen: Pudoc.Google Scholar
McBride, BW & Milligan, LP (1984) The effect of lactation on ouabain-sensitive respiration of the duodenal mucosa of cows. Canadian Journal of Animal Science 64, 817–824.CrossRefGoogle Scholar
McBride, BW & Milligan, LP (1985) Influence of feed intake and starvation on the magnitude of Na+,K+-ATPase (EC 3.6.1.3)-dependent respiration in duodenal mucosa of sheep. British Journal of Nutrition 53, 605–614.CrossRefGoogle Scholar
McClymont, GL (1952) Specific dynamic action of acetic acid and heat increment of feeding in ruminants. Australian Journal of Scientific Research 5B, 374–383.Google Scholar
McLeod, KR & Baldwin, VI (1998) Influence of energy density and metabolizable energy intake on visceral organ growth in sheep. In Energy Metabolism of Farm Animals. Proceedings of the 14th Symposium on Energy Metabolism, pp. 31–34 [McCracken, KJ, Unsworth, EF and Wylie, ARG, editors]. Wallingford, Oxon.: CAB International.Google Scholar
National Research Council (1985) Nutrient Requirements of Sheep, 6th revised ed. Washington, DC: National Academy Press.Google Scholar
National Research Council (1989) Nutrient Requirements of Dairy Cattle, 6th revised ed. Washington, DC: National Academy Press.Google Scholar
Novozamsky, J, Van Eck, R, Van Schovwenburg, JC & Walinga, I (1974) Total N determination in plant material by means of the indophenol blue method. Netherlands Journal of Agricultural Science 22, 3–5.CrossRefGoogle Scholar
Okeke, GC, Buchanan-Smith, JG & Grieve, DR (1983) Effect of sodium bicarbonate on rate of passage and degradation of soybean meal in postpartum dairy cows. Journal of Dairy Science 66, 1023–1031.CrossRefGoogle ScholarPubMed
Orskov, ER, Flatt, WP, Moe, PW, Munson, AW, Hemken, RW & Katz, I (1969) The influence of ruminal infusion of volatile fatty acids on milk yield and composition and on energy utilization by lactating cows. British Journal of Nutrition 23, 443–453.CrossRefGoogle ScholarPubMed
Orskov, ER, Grubb, DA, Smith, JS, Webster, AJF & Corrigall, W (1979) Efficiency of utilization of volatile fatty acids for maintenance and energy retention by sheep. British Journal of Nutrition 41, 541–551.CrossRefGoogle ScholarPubMed
Orskov, ER & MacLeod, NA (1990) Dietary induced thermogenesis and feed evaluation in ruminants. Proceedings of the Nutrition Society 49, 227–237.CrossRefGoogle ScholarPubMed
Orskov, ER & MacLeod, NA (1993) Effect of level of input of different proportions of volatile fatty acids on energy utilization in growing ruminants. British Journal of Nutrition 70, 679–687.CrossRefGoogle ScholarPubMed
Orskov, ER, MacLeod, NA & Nakashima, Y (1991) Effect of different volatile fatty acid mixtures on energy metabolism in cattle. Journal of Animal Science 69, 3389–3397.CrossRefGoogle ScholarPubMed
Reynolds, CK, Tyrrell, HF & Reynolds, PJ (1991) Effects of diet forage-to-concentrate ratio and intake on energy metabolism in growing beef heifers: whole body energy and nitrogen balance and visceral heat production. Journal of Nutrition 121, 994–1003.CrossRefGoogle ScholarPubMed
Robertson, JB, Van Soest, PJ (1981) The detergent system of analysis and its application to human foods. In The Analysis of Dietary Fiber in Food, pp. 123–158 [James, WTP and Theander, O, editors]. New York, NY: Marcel Dekker Inc.Google Scholar
SAS Institute Inc. (1989) SAS/STAT User's Guide, version 6, 4th ed. Cary, NC: SAS Institute Inc.Google Scholar
Thompson, GE, Manson, W, Clarke, PL & Bell, AW (1978) Acute cold exposure and the metabolism of glucose and some of its precursors in the liver of the fed and fasted sheep. Quarterly Journal of Experimental Physiology 63, 189–199.CrossRefGoogle Scholar