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Date Posted: 04:42:52 09/02/07 Sun
Author: Melissa
Subject: Follicles
In reply to: Tonja 's message, "Breeding Friesians" on 04:57:59 09/01/07 Sat

This piece of info on follicles etc.. comes from my good friend's website on owning a Friesian. She is the breeder of my future baby (due next year). She has years of experience and I take her knowledge of breeding seriously.

Here is the quote:
This is more anecdotal evidence gathered from various sources, from friesian breeding facilities (including ourselves), vet schools (New Bolton, Leesburg, VTU Blacksburg), equine thorongologists like Nandi Vet Clinic (Dr Hurtgen et al) etc. Some mares are very fertile and get in foal first time every time (we are lucky enough to have one in our barn) but many others are bred repeatedly, with ideal conditions and take repeated breedings to settle, if they ever do. In addition, friesians are notorious for growing larger follicles than most other breeds, making it difficult to get the timing correct for AI. They tend to not ovulate until 40-50mm versus many other breeds that ovulate in the 30s. It causes many inexperienced vets and owners to ship/breed more often than necessary and friesian mares typically can hold onto their follicles through an HCG shot when others would have given up and ovulated already. There's a great article on Iron Spring Farm's site talking about this very topic. Add that to the (typically) already decreased motility of many stallions and you have a very hard to reproduce animal.

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