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Gas production in vitro from either unprocessed, micronised or extruded maize, peas, wheat, naked oats and barley using equine faeces as the source of inocula

Published online by Cambridge University Press:  20 November 2017

B M L McLean ,
J J Hyslop ,
A C Longland ,
D Cuddeford  and
T Hollands
B M L McLean
Affiliation:
Dept. Of Vet. Clinical Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian, EH25 9RG, UK
J J Hyslop
Affiliation:
Dept. Of Vet. Clinical Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian, EH25 9RG, UK
A C Longland
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB, UK
D Cuddeford
Affiliation:
Dept. Of Vet. Clinical Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian, EH25 9RG, UK
T Hollands
Affiliation:
Dodson & Horrell Ltd, Ringstead, Kettering, Northamptonshire, NN14 4BX
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Extract

A wide variety of starch based feeds are available for inclusion in equine diets. These feeds may be subjected to physical processing (micronisation or extrusion) prior to inclusion. This experiment evaluates a range of starch based feedstuffs using an in vitro batch culture technique.

A total of 15 feedstuffs were incubated in vitro with an inocula prepared from freshly voided faeces which was collected from six ponies fed grass hay ad libitum. The feeds were five starch based feedstuffs; i.e: maize (M), peas (P), wheat (W), naked oats (NO) or barley (Ba) in one of three physically processed forms i.e: unprocessed (Unp), micronised (Mic) or extruded (Ext). All feeds were ground through a 1.0mm screen prior to incubation. Cumulative gas production (GP) was measured using the pressure transducer technique of Theodorou et al (1994) throughout a 72 h incubation period.

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Programme
Information
Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 137
Copyright
Copyright © The British Society of Animal Science 1999

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References

France, J., Dhanoa, M.S., Theodorou, M.K., Lister, S.J., Davies, D.R., Isac, D. 1993. A model to interpret gas accumulation profiles associated with in vitro degradation of ruminant feeds. J. Theor. Biol. 163: 99– 111 CrossRefGoogle Scholar
Theodorou, M.K., Williams, B.A., Dhanoa, M.S.,McAllan, A.B., France, J. 1994 A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feeds. Anim. Feed Sci. & Tech. 48: 185–197.CrossRefGoogle Scholar