
Effects of 2-Hydroxy-4-(Methylthio) Butanoic Acid (HMB) and Its Isopropyl Ester on Milk Production and Composition by Holstein Cows*
Keywords: 2-hydroxy-4-(methylthio)-butanoic acid; methionine hydroxy analog; milk yield; milk composition)HMB, 2-hydroxy-4-(methylthio)-butanoic acid; HMBi, isopropyl ester of HMB; MP, metabolizable protein; PUN, plasma urea nitrogen; WOE, week of experiment