1. For regulation and control of the breeding cycle of mares: (a) To induce ovulatory oestrus early in the breeding season in mares where some follicular activity exists; (b) For the suppression of oestrus either during prolonged oestrus or in normally cycling mares; (c) For the control of the ovarian cycle in breeding mares to allow
the most efficient use of the stallion.
2. For the maintenance of pregnancy in habitually aborting mares, or mares at risk of early embryonic death or abortion, where progesterone deficiency is thought to be the underlying cause.”