Salmonella colonisation of laying hens following vaccination with killed and live attenuated commercial Salmonella vaccines
- R. J. Atterbury, BSc, PhD,
- V. M. Allen, PhD, FIBMS1,
- J. J. Carrique-Mas, DVM, MSc, PhD, MRCVS and
- R. H. Davies, BVSc, PhD, MRCVS2
- 1 Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol BS40 5LX
- 2 Department of Bacterial Diseases, Veterinary Laboratories Agency — Weybridge, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD robert.atterbury{at}nottingham.ac.uk
Abstract
The aim of this study was to determine the efficacy of a killed Salmonella vaccine and three live vaccines in preventing caecal colonisation of Hy-line Brown pullets by Salmonella Enteritidis PT 4. The lowest number of Salmonella-positive birds following the largest challenge (108 cfu) was recorded for live vaccine 1. However, birds treated with the killed vaccine had a significantly lower number of salmonellae in their caeca compared with both the control group and the other vaccine groups (P<0˙05).
- British Veterinary Association. All rights reserved.
