Sixty cows of the Mantiqueira breed were randomly divided in three groups of 20 animals each. On day 3 and 4 of the estral cycle, groups 1 and 2 received 2.5 mg of FSH-pure and 50 UI de FSH (ratio FSH:LH = 1:1), respectively, while the group 3 (control) received 0,9% NaCl....