ABSTRACT Researchers are increasingly using the domestic hen (_Gallus gallus_) as an animal model for ovarian cancer. The authors analyzed mortality rates of two large flocks of older hens

that were being used for ovarian adenocarcinoma studies. All hens were fed the same maintenance diets, though some hens in each flock received experimental chemopreventive treatments. Per

the request of a collaborating institution, partway through the study, the authors started to remove the hens in one of the flocks for cage changing once every 4 weeks. After the authors

began cleaning some of the hens' cages, the mortality rate in this flock increased significantly. Throughout the study, within each flock, hens in the treatment and control groups had

institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS LAYING HEN MORTALITY IN DIFFERENT INDOOR HOUSING SYSTEMS: A META-ANALYSIS OF

DATA FROM COMMERCIAL FARMS IN 16 COUNTRIES Article Open access 04 February 2021 SLOW-GROWING BROILERS ARE HEALTHIER AND EXPRESS MORE BEHAVIOURAL INDICATORS OF POSITIVE WELFARE Article Open

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Article  CAS  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Poultry Science, North Carolina State University, Raleigh, NC Kenneth E.

Anderson,  Paul E. Mozdziak &  James N. Petitte Authors * Kenneth E. Anderson View author publications You can also search for this author inPubMed Google Scholar * Paul E. Mozdziak View

author publications You can also search for this author inPubMed Google Scholar * James N. Petitte View author publications You can also search for this author inPubMed Google Scholar

CORRESPONDING AUTHOR Correspondence to Kenneth E. Anderson. ETHICS DECLARATIONS COMPETING INTERESTS The authors declare no competing financial interests. RIGHTS AND PERMISSIONS Reprints and

permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Anderson, K., Mozdziak, P. & Petitte, J. The impact of scheduled cage cleaning on older hens (_Gallus gallus_). _Lab Anim_ 39, 210–215

(2010). https://doi.org/10.1038/laban0710-210 Download citation * Received: 22 January 2010 * Accepted: 19 April 2010 * Issue Date: July 2010 * DOI: https://doi.org/10.1038/laban0710-210

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