One implant per ewe.

Use the Regulin® implanter to administer one implant subcutaneously near the base of the ear.

In Suffolk and Suffolk cross types Regulin® should be used from mid May to late June for ram introduction in late June and July. In Mule and halfbred flocks Regulin® should be administered from early June to late July for ram introduction from mid July to late August.

Do not use Regulin® at times other than those recommended.

Day 1 (30 weeks before intended start of lambing): As the presence of any ram (and also male goats) will interfere with the ovulatory process, isolate ewes from all males. The ewes should be out of sight, sound and smell. Separating males into the next field from females is not adequate.

Day 7: Implant ewes at the base of the ear; ewes must remain isolated from male sheep and goats.

Day 42 (35 days after implantation): The period between implanting and introduction of the males must be no less than 30 days and no more than 40 days. Introduce rams, but expect a delay of 14-21 days before mating activity commences. Vasectomised rams may be used for the first 14 days to ensure a more compact lambing period. The peak of mating activity will occur 25-35 days after introducing the rams.