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Estimating the extent of degradation of ruminant feeds from a description of their gas production profiles observed in vitro:derivation of models and other mathematical considerations

Published online by Cambridge University Press:  09 March 2007

J. France ,
J. Dijkstra ,
M. S. Dhanoa ,
S. Lopez  and
A. Bannink
J. France*
Affiliation:
The University of Reading Department of Agriculture, PO Box 236, Earley Gate, Reading, RG6 6AT, UK
J. Dijkstra
Affiliation:
The University of Reading Department of Agriculture, PO Box 236, Earley Gate, Reading, RG6 6AT, UK
M. S. Dhanoa
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB, UK
S. Lopez
Affiliation:
Department of Animal Production, University of Leon, 24007 Leon, Spain
A. Bannink
Affiliation:
Institute for Animal Science and Health (ID-DLO), PO Box 65, 8200 AB Lelystad, The Netherlands
*
*Corresponding author: Professor J. France, fax +44 (0)118 935 2421, email j.france@reading.ac.uk
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Abstract

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Equations to describe gas production profiles, obtained using manual or automated systems for in vitro fermentation of ruminant feeds, were derived from first principles by considering a simple three-pool scheme. The pools represented were the potentially degradable and undegradable feed fractions, and accumulated gases. The equations derived and investigated mathematically were the generalized Mitscherlich, generalized Michaelis–Menten, Gompertz, and logistic. They were obtained by allowing the fractional rate of degradation to vary with time. The equations permit the extent of ruminal degradation (hence the supply of microbial protein to the duodenum) to be evaluated, thus linking the gas production technique to animal production.

Keywords

RumenGas productionMathematical models
Type
Research Article
Information
British Journal of Nutrition , Volume 83 , Issue 2 , February 2000 , pp. 143 - 150
Copyright
Copyright © The Nutrition Society 2000

References

Beuvink, JMW and Kogut, J (1993) Modeling gas production kinetics of grass silages incubated with buffered ruminal fluid Journal of Animal Science 71, 1041–1046.CrossRefGoogle ScholarPubMed
Beuvink, JMW, Spoelstra, SF and Hogendorp, RJ (1992) An automated method for measuring time-course of gas production of feedstuffs with buffered rumen fluid. Netherlands Journal of Agricultural Science 40, 401–407.CrossRefGoogle Scholar
Blümmel M and Ørskov ER (1993) Comparison of in vitro gas production and nylon-bag degradability of roughage in predicting feed intake in cattle. Animal Feed Science and Technology 40, 109–119.CrossRefGoogle Scholar
Chesson, A (1988) Lignin–polysaccharide complexes of the plant cell wall and their effect on microbial degradation in the rumen. Animal Feed Science and Technology 21, 219–228.CrossRefGoogle Scholar
Cone, JW Van Gelder, AHVisscher, GJW and Oudshoorn, L (1996) Influence of rumen fluid and substrate concentration on fermentation kinetics measured with a fully automated time related gas production apparatus. Animal Feed Science and Technology 61, 113–128.CrossRefGoogle Scholar
Dhanoa, MSLopez, SDijkstra, JDavies, DRSanderson, RWilliams, BASileshi, Z and France, J (2000) Estimating the extent of degradation of ruminant feeds from a description of their gas production profiles observed in vitro: comparison of models. British Journal of Nutrition 83, 131–142.CrossRefGoogle ScholarPubMed
Dijkstra, J and France, J (1996) A comparative evaluation of models of whole rumen function .Annales de Zootechnie 45, 175–192.CrossRefGoogle Scholar
France, JDhanoa, MSTheodorou, MKLister, SJDavies, DR and Isac, D (1993) A model to interpret gas accumulation profiles associated with in vitro degradation of ruminant feeds. Journal of Theoretical Biology 163, 99–111.CrossRefGoogle Scholar
France, JDijkstra, JThornley, JHM and Dhanoa, MS (1996) A simple but flexible growth function. Growth, Development and Aging 60, 71–83.Google ScholarPubMed
Groot, JCJ, Cone, JWWilliams, BADebersaques, FMA and Lantinga, EA (1996) Multiphasic analysis of gas production kinetics for in vitro fermentation of ruminant feeds .Animal Feed Science and Technology 64, 77–89.CrossRefGoogle Scholar
Khazaal, KDentinho, MTRibeiro, JM and Ørskov ER (1993) A comparison of gas production during incubation with rumen contents in vitro and nylon bag degradability as predictors of the apparent digestibility in vivo and the voluntary intake of hays. Animal Production 57, 105–112.Google Scholar
Khazaal, KBoza, J and Ørskov ER (1994) Assessment of phenolics-related antinutritive effects in Mediterranean browse: a comparison between the use of the in vitro gas production technique with or without insoluble polyvinylpolypyrrolidone or nylon bag. Animal Feed Science and Technology 49, 133–149.CrossRefGoogle Scholar
Krishnamoorthy, USoller, HSteingass, H and Menke, KH (1991) A comparative study on rumen fermentation of energy supplements in vitro. Journal of Animal Physiology and Animal Nutrition 65, 28–35.CrossRefGoogle Scholar
Krishnamoorthy, USoller, HSteingass, H and Menke, KH (1995) Energy and protein evaluation of tropical feedstuffs for whole tract and ruminal digestion by chemical analyses and rumen inoculum studies in vitro. Animal Feed Science and Technology 52, 177–188.CrossRefGoogle Scholar
McAllister, TABae, HDJones, GA and Cheng K-J (1994) Microbial attachment and feed digestion in the rumen. Journal of Animal Science 72, 3004–3018.CrossRefGoogle ScholarPubMed
Merry, RJTheodorou, MKRaurich, MG & Dhanoa, MS (1991) Use of head-space gas pressure in batch cultures to assist in determination of nutritive value of silage to rumen bacteria. In Forage Conservation 2000, pp. 451–454 [Pahlow, G, and Honig, H, editors]. Braunschweig, Germany: Institute of Grassland and Forage Research, Federal Research Center of Agriculture, Braunschweig-Volkenrode (FAL).Google Scholar
Ørskov ER and McDonald I (1979) The estimation of protein degradability in the rumen from incubation measurements weighted according to rates of passage. Journal of Agricultural Science, Cambridge 92, 499–503.CrossRefGoogle Scholar
Pell, AN and Schofield, P (1993) Computerized monitoring of gas production to measure forage digestion in vitro. Journal of Dairy Science 76, 1063–1073.CrossRefGoogle ScholarPubMed
Pirt, SJ (1975) Principles of Microbe and Cell Cultivation. Oxford: Blackwell Scientific Publications.Google Scholar
Schofield, P and Pell, AN (1995) Validity of using accumulated gas pressure readings to measure forage digestion in vitro: a comparison involving three forages .Journal of Dairy Science 78, 2230–2238.CrossRefGoogle ScholarPubMed
Schofield, P and Pell, AN (1995) Measurement and kinetic analysis of the neutral detergent soluble carbohydrate fraction of legumes and grasses. Journal of Animal Science 73, 3455–3463.CrossRefGoogle ScholarPubMed
Schofield, PPitt, RE and Pell, AN (1994) Kinetics of fibre digestion from in vitro gas production. Journal of Animal Science 72, 2980–2991.CrossRefGoogle ScholarPubMed
Sileshi, ZOwen, EDhanoa, MS and Theodorou, MK (1996) Prediction of in situ rumen dry matter disappearance of Ethiopian forages from an in vitro gas production technique using a pressure transducer, chemical analyses or in vitro digestibility. Animal Feed Science and Technology 61, 73–87.CrossRefGoogle Scholar
Theodorou, MKDavies, DRNielsen, BBLawrence, MIG and Trinci, APJ (1995) Determination of growth of anaerobic fungi on soluble and cellulosic substrates using a pressure transducer. Microbiology 141, 671–678.CrossRefGoogle Scholar
Theodorou, MKWilliams, BADhanoa, MS McAllan AB and France, J (1994) A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feedstuffs. Animal Feed Science and Technology 48, 185–197.CrossRefGoogle Scholar
Williams, BAChuzaemi, C Soebarinoto, Van Bruchem, JBoer, H and Tamminga, S (1996) A comparison of ten rice-straw varieties grown at two different altitudes during a wet and a dry season, using the in vitro cumulative gas production technique. Animal Feed Science and Technology 57, 183–194.CrossRefGoogle Scholar
Williams, BAVan der Poel, AFB, Boer, H and Tamminga, S (1995) The use of cumulative gas production to determine the effect of steam explosion on the fermentability of two substrates with different cell wall quality. Journal of the Science of Food and Agriculture 69, 33–39.CrossRefGoogle Scholar
Wilson, JR (1993) Organization of forage plant tissues. In Forage Cell Wall Structure and Digestibility, pp. 1–32 [Jung, HG, Buxton, DR, Hatfield, RD and Ralph, J, editors]. Madison, WI: American Society of Agronomy.Google Scholar