On the Hession brothers 260-cow, spring-calving farm, synchronisation has transformed breeding – delivering up to 80% conception to first service and a 100% submission rate on day one of breeding.

Why they synchronise

  • Heifers are the best genetics in the herd and, therefore, breeding them to dairy AI can lead to rapid genetic gains over time.
  • Hit the ground running: heifers calving in the first 10 days of February drive profit and lifetime performance (four to six lactations).
  • Stronger, earlier calves: earlier-born calves are more robust in year one and better set up for next year’s breeding.
  • Tighter calving spread: all heifers are bred on day one of the mating season and repeats are bred within three weeks.
  • Labour made easier: no more late-night checking for heats or guessing.

    • Fixed-time AI means planned, predictable work

    How it works

  • Your AI technician plays a key role in a successful outcome. Therefore, start by planning fixed-time AI around your AI technician’s availability.
  • To synchronise heats effectively, use all three fertility hormones (GnRH, progesterone and prostaglandin), so that all animals in the batch come bulling together.
  • Talk to your vet. Your vet prescribes the breeding protocol and sets up the programme on farm.

    • Results that matter

    Excellent results on the Hession farm, with 70% conception rates in year one to 80% conception rates to first service in 2025, resulting in a smoother, more efficient breeding season.

    Thinking about tightening your calving pattern and reducing labour? Talk to your vet about Zoetis fertility solutions and see how synchronisation can work on your farm. For further information, please contact your veterinary surgeon or Zoetis, second floor, Building 10, Cherrywood Business Park, Loughlinstown, Co Dublin D18 T3Y1. Call 01-256-9800 or email www.zoetis.ie. Prescription decisions are for the person issuing the prescription alone. Use medicines responsibly. (www.apha.ie) or (www.noah.co.uk/responsible). ZT/26/08/01.