Do you want

more lambs?

  • higher conception rates
  • more twins
  • fewer dries

more time?

  • shorter lambing
  • less paddock time
  • earlier weaning

more money?

  • early lambs
  • more consistent lines
  • fewer lifts at sale time

REGULIN improves the reproductive performance of sheep joined out of season by an average of 20%*. It’s that simple.

More lambs on the ground means more money in your pocket.

* Some farmers get more than a 20% increase depending on their sheep, seasonal conditions and their management program. 

What is Regulin?

Regulin is a small pellet implanted under the skin behind a sheep’s ear. It releases melatonin over 100-120 days, mimicking the onset of Autumn, the natural season for joining sheep.

  • In ewes, Regulin induces sexual readiness in spring and early summer, allowing year round productivity.
  • In rams, Regulin increases the amount of sperm in each ejaculate.

Regulin can optimise the reproduction cycle of sheep to suit weather and feed conditions. Lambs can be weaned on greener pasture and ewes can recover more fully for their next pregnancy.

Regulin is suited to all breeds of sheep including Merinos. It can be used in meat, wool and stud operations, with no withholding period.

Our customers get consistent results year after year. Calculate your potential returns with our Ready-Reckoner.

What is Regulin?

Why do our customers use Regulin?

Peter Holmes
Homewood, VIC

Chad Taylor
Mumblebone Merinos

Jodie Green
Aloeburn Poll Merinos

implants worldwide this year

implants in Australia this year

Australian farms use Regulin

Ceva Animal Health is recognised internationally as an expert in small ruminant reproduction. It works with scientists and veterinary practitioners to further knowledge of sheep and goat reproduction. Results are published in leading academic journals.

Ceva’s commitment education for small ruminant veterinarians includes the launch of www.reprodaction.com which gathers all available data and publications regarding reproduction in cattle, sheep and goats.

The use of melatonin (Regulin) as a reproductive tool is one of the latest contributions of CEVA in this field.

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Regulin® is licensed for use in ewes and rams in Australia by:

Ceva Animal Health Pty Ltd.
11 Moores Road
Glenorie NSW 2157
ACN 002 692 426

T: +61 2 9652 7000
F: +61 2 9652 7001
Visit our WEBSITE


To request a call from one of our Regulin Repro Team members, please call 1300 6999 16 or use the contact form below.