Sheep are inherently seasonal breeders, but some breeds have later joining windows than others. Regulin, a science-based solution, overcomes this seasonality by activating the ‘axis of reproduction’ in sheep, which typically wouldn’t be triggered until Autumn. By stimulating ovulation in ewes and enhancing sperm production in rams, in spring or early summer Regulin enables sheep to reach their full genetic potential, resulting in a 20% increase in lamb numbers, averaged over a five-year period.

Maximise results with optimal conditions

To achieve the best results, ensure your sheep have a condition score of betwee 2.5-3 and are on a rising plane of nutrition at the time of joining. Treating both rams and ewes with Regulin maximises the benefits. Follow the Regulin protocols for administering and managing early joining.

It is important to implant Regulin 30-40 days prior to joining for optimal effectiveness.

Benefits of Regulin

• Increases lamb numbers: More twins and fewer dry ewes contribute to a higher lamb count.
• Tightens lambing window: A higher number of ewes conceive in the first and second cycles, leading to a condensed lambing period.
• Works in all breeds: Suitable for all sheep breeds, including Merinos.
• Is effetive in ewe lambs and maidens: Can be used in sexually mature ewe lambs and maidens. For best results with these sheep, join between January-March.

Limitations of Regulin

• Not effective in poor sheep: Sheep in poor condition will not respond to Regulin.
• Does not cure infertility: Regulin will not make infertile sheep fertile, it simply enables sheep to express their genetic reproductive potential.
• No impact on puberty: It does not induce puberty in ewe lambs.
• No increase in triplets or quads: Regulin does not increase the number of triplets or larger multiples, which can be challenging to manage.

By adhering to these guidelines and leveraging the benefits of Regulin, sheep producers can significantly enhance their flock’s reproductive performance and overall productivity.

Martin Harvey
‘Broadview’
Western Flat, SA

Martin Harvey and his wife Kirsty run ‘Broadview’ which incorporates Paxton Stud (Border Leicesters, White Suffolks and Poll Dorsets) in Western Flat, South Australia.

They use Regulin because they get more lambs, but the compression in lambing is also a great benefit. In the video, Martin says:

“This year we’ve had a phenomenal lambing. We’ve never had so many lambs in such a short space of time, which for us is ideal, because when we’re selling rams we have an even drop and a really good selection of even rams for our clients.”

The Harveys have also used Regulin to synchronise the joinings of their different breeds, which means their stud rams are older at sale time.

“Our rams would be at least a month older than other studs’ Border Leicester rams, and the fact these rams are only 12-14 months old when we sell them, we implant them with Regulin before we sell them and they’re cherry ripe to go out and do the maximum amount of work.”

And it doesn’t stop there – they’ve also had success with their commercial flock and in particular with ewe lambs:

“Last year we got 92% of ewe lambs in lamb – which is extremely good for ewe lambs, and this year we got 96% conception in the ewe lambs and we’ve just marked 150%.”