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Variation between feedstuff degradabilities assessed using short-term in vitro incubations and a comparison with in sacco derived values

Published online by Cambridge University Press:  20 November 2017

C. A. Butler
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading, RG6 6AT, UK
F.L. Mould
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading, RG6 6AT, UK
E. Owen
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading, RG6 6AT, UK
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Extract

While end-point in vitro techniques provide no information regarding the kinetics of feedstuff degradation they are generally simpler to conduct and require fewer inputs especially with respect to labour. In contrast systems, which permit degradation dynamics to be assessed, require that multiple measurements are made and be continued for a sufficient period to ensure that asymptotic values are reached. This study was therefore conducted to examine the variability that could be expected between short-term end-point in vitro degradability techniques and to compare some of the values with in sacco derived estimates.

Type
Poster Presentations
Copyright
Copyright © The British Society of Animal Science 2001

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References

Mauricio, R.M., Mould, F.L., Dhanoa, M.S., Owen, E., Channa, K.S. and Theodorou, M.K. 1999. Semi-automation of the pressure transducer in vitro gas production technique for evaluating ruminant feedstuffs. Animal Feed Science and Technology, 79:321330.CrossRefGoogle Scholar
Minson, D.J. and McLeod, M.N. 1972. The in vitro technique: its modification for estimating digestibility of large numbers of pasture samples. Division of Tropical Crops and Pastures, Tech. Paper No. 8, CSIRO, Australia, pp 115.Google Scholar
Mould, F.L. and Nordheim, H. 1998. Dry matter and NDF degradation profiles of roughages obtained using the ANKOM in vitro system. In: In vitro techniques for measuring nutrient supply to ruminants. Ed Deaville, E.R., Owen, E., Adesogan, A.T., Rymer, C., Huntingdon, J.A. and Lawrence, T.L.J.. BSAS Occasional Publication, No 22, pp 329331.Google Scholar

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