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The effect of n-methionyl bovine somatotropin (bST) on milk yield was evaluated in crossbred cows (40 ½ Bos indicus × ½ Bos taurus and 18 ¼ B. indicus × ¾ B. taurus) in Brazil. Cows were randomly assigned to treatments within stage of lactation [stage 1 = 56 to 100 d in milk (DIM); stage 2 = 101 to 199 DIM] and breed groups (½ vs. ¼ B. indicus blood). Treatments were 250 or 500mg of bST administered...
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