J. Dairy Sci. 91:1552–1559 doi:10.3168/jds.2007-0721
© American Dairy Science Association, 2008.
Supplementing Limited Methionine Diets with Rumen-Protected Methionine, Betaine, and Choline in Early Lactation Holstein Cows
S. Davidson,* B. A. Hopkins,*1 J. Odle,* C. Brownie,† V. Fellner,* and L. W. Whitlow*
*Department of Animal Science, and †Department of Statistics, North Carolina State University, Raleigh 27695