Research Note: Internal organ colonization by Salmonella Enteritidis in experimentally infected layer pullets reared at different stocking densities in indoor cage-free housing [PDF]
Poultry Science, 2022 : Contamination of eggs by Salmonella has often been identified as a source of food-borne human illness. S. Enteritidis is deposited inside developing eggs when invasive infections of laying hens reach the reproductive organs.
Richard K. Gast +4 more
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Research Note: Contamination of eggs by Salmonella Enteritidis and Salmonella Typhimurium in experimentally infected laying hens in indoor cage-free housing [PDF]
Poultry Science, 2021 : Contaminated eggs are a leading source of human Salmonella infections and this problem continues to challenge public health authorities and egg industries around the world.
Richard K. Gast +4 more
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A critical review on the welfare of Japanese quail in cage-free housing: Current knowledge and future perspectives [PDF]
Poultry ScienceThe Japanese quail (Coturnix japonica) is an increasingly popular species in poultry production. Concern about poultry welfare, including quail, has resulted in a stronger focus for farms to transition to cage-free housing as highlighted by the 2020 ...
Désirée S. Jansson +4 more
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Research Note: Horizontal transmission and internal organ colonization by Salmonella Enteritidis and Salmonella Kentucky in experimentally infected laying hens in indoor cage-free housing [PDF]
Poultry Science, 2020 The transmission of Salmonella to humans via contaminated eggs is an international public health concern. S. Enteritidis is deposited inside eggs after colonizing reproductive tissues of infected hens.
Richard K. Gast +4 more
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Environmental contamination and horizontal transmission of Salmonella Enteritidis among experimentally infected layer pullets in indoor cage-free housing [PDF]
Poultry ScienceThe persistence and transmission of the egg-associated pathogen Salmonella Enteritidis in laying flocks are significantly influenced by the poultry housing environment. The present study assessed environmental contamination and horizontal transmission of
Richard K. Gast +4 more
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Journal of Applied Poultry Research, 2023 SUMMARY: Invasive Salmonella Enteritidis infection involving the reproductive organs of laying hens can result in the production of internally contaminated eggs, which continue to be prominent sources of disease transmission to consumers.
Richard K. Gast +4 more
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Journal of Applied Poultry Research, 2021 Summary: Cage-free housing of laying hens may provide opportunities for widespread environmental distribution of Salmonella contamination and horizontal transmission of infection within flocks.
Richard K. Gast +4 more
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Effects of intelligent housing systems on meat quality and flavor of different cuts of yellow-feathered broiler chickens [PDF]
Poultry ScienceThis study systematically compared the differences in objective indicators of eating quality, texture properties, free amino acids, volatile flavor compounds, and metabolomic profiles in breast and thigh muscles of yellow-feathered broiler chickens ...
Xiao Jun Ju +7 more
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Multi-tissue transcriptomic profiling reveals the internal physiological landscape of laying hens in cage and cage-free systems [PDF]
Poultry ScienceWelfare-friendly housing systems for laying hens, such as cage-free, have become prevalent. However, the physiological effects of housing systems on the laying hens remain poorly understood. Here, we compared behavioral characteristics and transcriptomic
Nonoko N. Shimura +15 more
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Moving hens into cages affects cognitive performance, extinction learning and motivation for rewards [PDF]
Animal WelfareUnderstanding chicken cognition is essential for improving welfare in production systems, as it reveals how animals perceive and respond to their environment.
Javiera Calderón-Amor +3 more
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