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Microbiological impact of three commercial laying hen housing systems

Hen housing for commercial egg production continues to be a societal and regulatory concern. Controlled studies have examined various aspects of egg safety, but a comprehensive assessment of commercial hen housing systems in the US has not been conducted. The current study is part of a holistic, mul...

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Autores principales: Jones, D. R., Cox, N. A., Guard, J., Fedorka-Cray, P. J., Buhr, R. J., Gast, R. K., Abdo, Z., Rigsby, L. L., Plumblee, J. R., Karcher, D. M., Robison, C. I., Blatchford, R. A., Makagon, M. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Poultry Science Association, Inc. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990896/
https://www.ncbi.nlm.nih.gov/pubmed/25480737
http://dx.doi.org/10.3382/ps/peu010
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author Jones, D. R.
Cox, N. A.
Guard, J.
Fedorka-Cray, P. J.
Buhr, R. J.
Gast, R. K.
Abdo, Z.
Rigsby, L. L.
Plumblee, J. R.
Karcher, D. M.
Robison, C. I.
Blatchford, R. A.
Makagon, M. M.
author_facet Jones, D. R.
Cox, N. A.
Guard, J.
Fedorka-Cray, P. J.
Buhr, R. J.
Gast, R. K.
Abdo, Z.
Rigsby, L. L.
Plumblee, J. R.
Karcher, D. M.
Robison, C. I.
Blatchford, R. A.
Makagon, M. M.
author_sort Jones, D. R.
collection PubMed
description Hen housing for commercial egg production continues to be a societal and regulatory concern. Controlled studies have examined various aspects of egg safety, but a comprehensive assessment of commercial hen housing systems in the US has not been conducted. The current study is part of a holistic, multidisciplinary comparison of the diverse aspects of commercial conventional cage, enriched colony cage, and cage-free aviary housing systems and focuses on environmental and egg microbiology. Environmental swabs and eggshell pools were collected from all housing systems during 4 production periods. Total aerobes and coliforms were enumerated, and the prevalence of Salmonella and Campylobacter spp. was determined. Environmental aerobic and coliform counts were highest for aviary drag swabs (7.5 and 4.0 log cfu/mL, respectively) and enriched colony cage scratch pad swabs (6.8 and 3.8 log cfu/mL, respectively). Aviary floor and system wire shell pools had the greatest levels of aerobic contamination for all eggshell pools (4.9 and 4.1 log cfu/mL, respectively). Hens from all housing systems were shedding Salmonella spp. (89–100% of manure belt scraper blade swabs). The dry belt litter removal processes for all housing systems appear to affect Campylobacter spp. detection (0–41% of manure belt scraper blade swabs) considering detection of Campylobacter spp. was much higher for other environmental samples. Aviary forage area drag swabs were 100% contaminated with Campylobacter spp., whereas enriched colony cage scratch pads had a 93% positive rate. There were no differences in pathogen detection in the shell pools from the 3 housing systems. Results indicate egg safety is enhanced when hens in alternative housing systems use nest boxes. Additionally, current outcomes indicate the use of scratch pads in hen housing systems needs to be more thoroughly investigated for effects on hen health and egg safety.
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spelling pubmed-49908962016-09-01 Microbiological impact of three commercial laying hen housing systems Jones, D. R. Cox, N. A. Guard, J. Fedorka-Cray, P. J. Buhr, R. J. Gast, R. K. Abdo, Z. Rigsby, L. L. Plumblee, J. R. Karcher, D. M. Robison, C. I. Blatchford, R. A. Makagon, M. M. Poult Sci Coalition for Sustainable Egg Supply Hen housing for commercial egg production continues to be a societal and regulatory concern. Controlled studies have examined various aspects of egg safety, but a comprehensive assessment of commercial hen housing systems in the US has not been conducted. The current study is part of a holistic, multidisciplinary comparison of the diverse aspects of commercial conventional cage, enriched colony cage, and cage-free aviary housing systems and focuses on environmental and egg microbiology. Environmental swabs and eggshell pools were collected from all housing systems during 4 production periods. Total aerobes and coliforms were enumerated, and the prevalence of Salmonella and Campylobacter spp. was determined. Environmental aerobic and coliform counts were highest for aviary drag swabs (7.5 and 4.0 log cfu/mL, respectively) and enriched colony cage scratch pad swabs (6.8 and 3.8 log cfu/mL, respectively). Aviary floor and system wire shell pools had the greatest levels of aerobic contamination for all eggshell pools (4.9 and 4.1 log cfu/mL, respectively). Hens from all housing systems were shedding Salmonella spp. (89–100% of manure belt scraper blade swabs). The dry belt litter removal processes for all housing systems appear to affect Campylobacter spp. detection (0–41% of manure belt scraper blade swabs) considering detection of Campylobacter spp. was much higher for other environmental samples. Aviary forage area drag swabs were 100% contaminated with Campylobacter spp., whereas enriched colony cage scratch pads had a 93% positive rate. There were no differences in pathogen detection in the shell pools from the 3 housing systems. Results indicate egg safety is enhanced when hens in alternative housing systems use nest boxes. Additionally, current outcomes indicate the use of scratch pads in hen housing systems needs to be more thoroughly investigated for effects on hen health and egg safety. Poultry Science Association, Inc. 2014-12-05 2015-03 /pmc/articles/PMC4990896/ /pubmed/25480737 http://dx.doi.org/10.3382/ps/peu010 Text en © The Author 2015. Published by Oxford University Press on behalf of Poultry Science Association. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.
spellingShingle Coalition for Sustainable Egg Supply
Jones, D. R.
Cox, N. A.
Guard, J.
Fedorka-Cray, P. J.
Buhr, R. J.
Gast, R. K.
Abdo, Z.
Rigsby, L. L.
Plumblee, J. R.
Karcher, D. M.
Robison, C. I.
Blatchford, R. A.
Makagon, M. M.
Microbiological impact of three commercial laying hen housing systems
title Microbiological impact of three commercial laying hen housing systems
title_full Microbiological impact of three commercial laying hen housing systems
title_fullStr Microbiological impact of three commercial laying hen housing systems
title_full_unstemmed Microbiological impact of three commercial laying hen housing systems
title_short Microbiological impact of three commercial laying hen housing systems
title_sort microbiological impact of three commercial laying hen housing systems
topic Coalition for Sustainable Egg Supply
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990896/
https://www.ncbi.nlm.nih.gov/pubmed/25480737
http://dx.doi.org/10.3382/ps/peu010
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