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In vivo apparent digestibility in ponies given rolled, micronised or extruded barley

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

Processed cereals are used routinely in diets for equines but little information is available on how physical processing affects the digestibility of cereals in equines. This study examines the effects of three physical processing methods (rolling, micronisation and extrusion) on the in vivo apparent digestibility of barley fed to ponies.

Three mature caecally-fistulated Welsh-cross pony geldings, (LW 284kg ± 3.8kg) were used in a 3 x 4 incomplete latin square changeover design experiment consisting of four 21 day periods. Each period comprised a sixteen day adaptation phase and a five day recording phase when apparent digestibility in vivo was determined. Ponies were offered 4kg dry matter (DM) per day of either 100% hay cubes (HC) or one of three diets consisting of a 50:50 barley:hay cubes mix. The barley in the mixed diets was either rolled barley (RB), micronised barley (MB) or extruded barley (EB). Diets were offered in 2 equal meals per day fed at 09:00 and 17:00 hours respectively.

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 133
Copyright
Copyright © The British Society of Animal Science 1999

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References

NRC. 1989. Nutrient requirements of Horses. 5th edition. National Academy Press, Washington, DC.Google Scholar