Johnson, Mary Ann2013-05-062013-05-062004-11-10http://hdl.handle.net/10919/21283Virginia dairy producers should avoid the temptation to keep naturally ventilated freestall barns too warm in winter. Cows are still productive at temperatures below 20 degrees if they are kept dry and protected from the wind, said Susan W. Gay, Virginia Cooperative Extension engineer in Biological Systems Engineering at Virginia Tech.text/htmlIn CopyrightPress releaseVirginia Tech. University Relations