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Effects of inclusion of red clover silage on the carriage of gut pathogens in steers

Bakewell, E. L.; Sanderson, R. and Davies, D. R. (2007) Effects of inclusion of red clover silage on the carriage of gut pathogens in steers. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

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Summary

Eight Hereford x Friesian steers prepared with rumen and duodenal cannulae were offered increasing proportions (increase of 33% each period) of red clover to grass over four periods with grass silage fed throughout to 4 steers as an experimental control. Numbers of Escherichia coli and Listeria were enumerated in silage from rumen, duodenal digesta and faecal samples at time points throughout each period. The results indicated that no silage contained E.coli whilst all silages had high populations of Listeria. Pathogen populations were lowest in the duodenum and highest in the rumen, although large populations were also found in faeces. The populations of E.coli were generally 10 fold lower than those of Listeria. Feeding red clover appeared to reduce pathogen loading but this was confounded by variation in the pathogen populations in the feed. Thus in conclusion, further research is required to elucidate the different effects of red clover and feed pathogen load on the gut and faecal pathogen populations.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Red Clover Silage, pathogens, steers, diet, faecal shedding
Subjects: Food systems > Food security, food quality and human health
Research affiliation: International Conferences > 2007: 3rd QLIF Congress > 4 Livestock production
European Union > QualityLowInputFood > Subproject 4: Livestock production systems
Deposited By: Davies, Dr D.R.
ID Code:9826
Deposited On:05 Mar 2007
Last Modified:12 Apr 2010 07:34
Document Language:English
Status:Published
Refereed:Not peer-reviewed
Additional Publishing Information: The final version of this paper is published in:
Niggli, Urs; Leifert, Carlo; Alföldi, Thomas; Lück, Lorna and Willer, Helga, Eds. (2007) Improving Sustainability in Organic and Low Input Food Production Systems. Proceedings of the 3rd International Congress of the European Integrated Project Quality Low Input Food (QLIF). University of Hohenheim, Germany, March 20 – 23, 2007. Research Institute of Organic Agriculture FiBL, CH-Frick.http://orgprints.org/10417/
Printed copies may be ordered from the FiBL Shop at www.shop.fibl.org.

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