U

U.S. Army Corps of Engineers

U.S. Congress

U.S. Democratic National Committee

U.S. Department of Agriculture (USDA)

U.S. Department of Health and Human Services

U.S. Department of Homeland Security

U.S. Department of Justice

U.S. Fish and Wildlife Service

U.S. Geological Survey

U.S. Meat Inspection Union

U.S. Military

U.S. National Intelligence Council

U.S. National Library of Medicine

U.S. National Security Health Policy Center

U.S. National Vaccine Program

U.S. Poultry and Egg Association

U.S. Public Health Service

U.S. Surgeon General

U.S. Wild Bird Conservation Act

UCLA

University of California - Los Angeles

Ultraviolet light

Union of Concerned Scientists

United Egg Producers

United Gamefowl Breeders Association

United Kingdom

United Nations (UN)

University College of London

University of Arizona

University of Arkansas

University of California, Davis

University of Cambridge

University of Edinburgh

University of Georgia

University of Guelph

University of Hong Kong

University of Maryland

University of Minnesota

University of Ottawa

University of Pennsylvania

University of Texas

University of Wisconsin

Urinary tract infections (UTIs)

USDA

U.S. Department of Agriculture

USA Poultry and Egg Export Council

Utilities