Results 11 to 20 of about 316 (195)

Research Note: Internal organ colonization by Salmonella Enteritidis in experimentally infected layer pullets reared at different stocking densities in indoor cage-free housing

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, Deana R. Jones, Rupa Guraya, Javier S. Garcia, Darrin M. Karcher   +4 more
doaj   +3 more sources

Numerical Simulation of Airborne Disease Spread in Cage-Free Hen Housing with Multiple Ventilation Options

Animals, 2022
The current ventilation designs of poultry barns have been present deficiencies with respect to the capacity to protect against disease exposure, especially during epidemic events. An evolution of ventilation options is needed in the egg industry to keep pace with the advancing transition to cage-free production.
Eileen Fabian, John Cimbala, Long Chen   +2 more
exaly   +4 more sources

Research Note: Horizontal transmission and internal organ colonization by Salmonella Enteritidis and Salmonella Kentucky in experimentally infected laying hens in indoor cage-free housing

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, Deana R. Jones, Rupa Guraya, Kenneth E. Anderson, Darrin M. Karcher   +4 more
doaj   +3 more sources

Characterization of the eukaryotic microbial communities in the chicken ileum in cage-free and conventional commercial housing systems

Poultry Science, 2023
The current shift from conventional cage (CC) hen housing facilities towards cage-free (CF) hen housing in the egg industry has left many questions regarding how level of fecal exposure and exposure to other hens may influence the hen intestinal microbiota.
Stephan Schmitz-Esser, Dawn Koltes, Chiron Anderson   +2 more
exaly   +5 more sources

Freeing the hens: Workshop outcomes for applying ethology to the development of cage-free housing systems in the commercial egg industry

Applied Animal Behaviour Science, 2022
Throughout the world, most laying hens producing eggs for human consumption are still kept in small, wirebattery cages. Ethologists have well documented the behavioural needs of hens, and the way that battery cageconfinement thwarts highly motivated behaviour and reduces hens’ quality of life.
Mona Franziska Giersberg, Bas Rodenburg
exaly   +4 more sources

Is There a "Cage-Free" Lunch in U.S. Egg Production? Public Views of Laying-Hen Housing Attributes

Journal of Agricultural and Resource Economics, 2019
Animal welfareÐrelated production attributes are increasingly considered by U.S. consumers making food purchasing decisions and U.S. voters at the ballot box. This research considers U.S. consumer preferences for egg production attributes.
Daniel Ochs, Christopher A. Wolf, Nicole J. Widmar, Courtney Bir   +3 more
doaj   +2 more sources

Impacts of Excreta Exposure and Age on Ileal Microbial Communities, Intestinal Permeability, and Corticosterone in Hens Housed in Enriched Colonies and Cage-Free Housing Systems

Poultry
To tease apart differences between conventional cage (CC) and cage-free (CF) housing systems, this study focuses on the effects of excreta exposure and age by comparing microbial communities, intestinal permeability, and corticosterone in hens in ...
Benjamin J. Altendorf, Chiron J. Anderson, Isabella von Seggern, Maddison L. Wiersema, Stephan Schmitz-Esser, Dawn A. Koltes   +5 more
doaj   +3 more sources

Combined Effect of Feed and Housing System Affects Free Amino Acid Content of Egg Yolk and Albumen in Brown Layer Chickens

The Journal of Poultry Science, 2023
In recent years, the market share for cage-free eggs has gradually increased. Because commercially available cage-free eggs are often produced not only by several housing systems but also with different feed crude protein (CP) levels, there are combined ...
Reo Yokoyama, Masahiro Takaya, Ryoko Ono, Tatsuhiko Goto   +3 more
doaj   +1 more source

Tracking floor eggs with machine vision in cage-free hen houses

Poultry Science, 2023
Some of the major restaurants and grocery chains in the United States have pledged to buy cage-free (CF) eggs only by 2025 or 2030. While CF house allows hens to perform more natural behaviors (e.g., dust bathing, perching, and foraging on the litter floor), a particular challenge is floor eggs (i.e., mislaid eggs on litter floor). Floor eggs have high
Sachin Subedi, Ramesh Bist, Xiao Yang, Lilong Chai   +3 more
openaire   +3 more sources

The Effect of Housing Environment on Egg Production, USDA Egg Size, and USDA Grade Distribution of Commercial White Egg Layers

Poultry, 2023
The housing environment has become a critical issue for consumers of eggs and egg products. Therefore, it is imperative to understand how various housing environments can affect the modern laying hen.
Benjamin N. Alig, Peter R. Ferket, Ramon D. Malheiros, Kenneth E. Anderson   +3 more
doaj   +1 more source