May 24, 2011
Computer simulation studies by scientists at the U.S. Department of Agriculture (USDA) suggests that a dairy cow living year-round in the great outdoors may leave a markedly smaller ecological hoofprint than its more sheltered sisters.
Agricultural Research Service (ARS) agricultural engineer Al Rotz led a team that evaluated how different management systems on a typical 250-acre Pennsylvania dairy farm would affect the environment. ARS is USDA's chief intramural scientific research agency, and this work supports the USDA commitment to promoting sustainable agriculture. Rotz works at the ARS Pasture Systems and Watershed Management Research Unit in University Park, Pa.
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