Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain

Feed-associated <i>Salmonella</i> serovars continue to be reported in poultry flocks. A study was conducted to investigate <i>Salmonella</i> contamination in major commercial feed mills that produce rations for broiler chickens within Great Britain. Dust and large moist gauze...

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Main Authors: Rebecca Gosling, Claire Oastler, Christopher Nichols, George Jackson, Andrew D. Wales, Robert H. Davies
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Veterinary Sciences
Subjects:
Online Access:https://www.mdpi.com/2306-7381/9/7/307
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author Rebecca Gosling
Claire Oastler
Christopher Nichols
George Jackson
Andrew D. Wales
Robert H. Davies
author_facet Rebecca Gosling
Claire Oastler
Christopher Nichols
George Jackson
Andrew D. Wales
Robert H. Davies
author_sort Rebecca Gosling
collection DOAJ
description Feed-associated <i>Salmonella</i> serovars continue to be reported in poultry flocks. A study was conducted to investigate <i>Salmonella</i> contamination in major commercial feed mills that produce rations for broiler chickens within Great Britain. Dust and large moist gauze swab samples (12,791) were collected from 22 feed mills on 31 visits. <i>Salmonella</i> was isolated from 20 mills, with 15 mills (75%) having fewer than 5% <i>Salmonella</i>-positive samples. Fifty-one <i>Salmonella</i> serovars were isolated, with a large proportion of isolates being <i>Salmonella</i> (<i>S</i>.) Kedougou (29.4%) or <i>S.</i> 13,23:i:- (21.4%). European Union-regulated <i>Salmonella</i> serovars (Enteritidis, Infantis, Typhimurium and its monophasic variants) were isolated from 12 mills, mostly from non-processing areas, accounting for 40 isolates (4.4% of all <i>Salmonella</i>-positive samples). Fifteen <i>Salmonella</i> serovars were only isolated once. In terms of individual sampling locations within the mill, the waste handling locations were significantly more likely to be <i>Salmonella</i>-positive than some other mill locations. When sampling locations were grouped, samples collected from finished product areas were significantly less likely to be <i>Salmonella</i>-positive for <i>Salmonella</i> than some other mill areas. In conclusion, this study found that most mills producing broiler rations showed low-level <i>Salmonella</i> contamination.
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spelling doaj.art-f794ce27cd3040cc83e8ecc83a9b60d52023-12-03T12:23:36ZengMDPI AGVeterinary Sciences2306-73812022-06-019730710.3390/vetsci9070307Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great BritainRebecca Gosling0Claire Oastler1Christopher Nichols2George Jackson3Andrew D. Wales4Robert H. Davies5Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UKDepartment of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UKDepartment of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UKDepartment of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UKDepartment of Pathology and Infectious Diseases, School of Veterinary Medicine, University of Surrey, Guildford GU2 7AL, UKDepartment of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UKFeed-associated <i>Salmonella</i> serovars continue to be reported in poultry flocks. A study was conducted to investigate <i>Salmonella</i> contamination in major commercial feed mills that produce rations for broiler chickens within Great Britain. Dust and large moist gauze swab samples (12,791) were collected from 22 feed mills on 31 visits. <i>Salmonella</i> was isolated from 20 mills, with 15 mills (75%) having fewer than 5% <i>Salmonella</i>-positive samples. Fifty-one <i>Salmonella</i> serovars were isolated, with a large proportion of isolates being <i>Salmonella</i> (<i>S</i>.) Kedougou (29.4%) or <i>S.</i> 13,23:i:- (21.4%). European Union-regulated <i>Salmonella</i> serovars (Enteritidis, Infantis, Typhimurium and its monophasic variants) were isolated from 12 mills, mostly from non-processing areas, accounting for 40 isolates (4.4% of all <i>Salmonella</i>-positive samples). Fifteen <i>Salmonella</i> serovars were only isolated once. In terms of individual sampling locations within the mill, the waste handling locations were significantly more likely to be <i>Salmonella</i>-positive than some other mill locations. When sampling locations were grouped, samples collected from finished product areas were significantly less likely to be <i>Salmonella</i>-positive for <i>Salmonella</i> than some other mill areas. In conclusion, this study found that most mills producing broiler rations showed low-level <i>Salmonella</i> contamination.https://www.mdpi.com/2306-7381/9/7/307poultrybroilerfeed<i>Salmonella</i>feed mill
spellingShingle Rebecca Gosling
Claire Oastler
Christopher Nichols
George Jackson
Andrew D. Wales
Robert H. Davies
Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
Veterinary Sciences
poultry
broiler
feed
<i>Salmonella</i>
feed mill
title Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
title_full Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
title_fullStr Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
title_full_unstemmed Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
title_short Investigations into <i>Salmonella</i> Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain
title_sort investigations into i salmonella i contamination in feed mills producing rations for the broiler industry in great britain
topic poultry
broiler
feed
<i>Salmonella</i>
feed mill
url https://www.mdpi.com/2306-7381/9/7/307
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