A comparison of serum L-aspartate: 2-oxoglutamate aminotransferase activity in the normal and tympanitic bovine

Abstract L-aspartate: 2-oxoglutamate aminotransferase (Transaminase) activity was determined in 4 tympanitic and 4 normal bovine. Two tympanitic and 2 normal bovine were fed control diets while 2 normal and 2 tympanitic bovine received the same ration plus 900 mg. per day of 1-methyl-2-mercaptoimidazole (Tapazole). Transaminase activity was 34 and 38 mU for the normal bovine on the standard ration and the normals on the standard ration plus Tapazole, respectively. The activity was 40 and 46 mU for the tympanitic bovine on the standard ration and on the standard ration plus Tapazole, respectively. Possible mechanisms are discussed.