I have a 15 year old broodmare that I am cosidering breeding with frozen. She has had many successful pregnancies until this past year when she became pregnant with chilled semen but at 90 days was no longer in foal. She has never been bred with frozen. A recent uterine biopsy result of Grade 2 and also needs a Caslick procedure. Given her age, biopsy result and need for Caslick's would I be crazy to attemp using frozen? Thanks for any opinions.
Jos Posted From: 126.96.36.199
Posted on Tuesday, January 04, 2005 - 06:40 pm:
Review the biopsy results with your veterinarian. There can be a variety of reasons for a reduction in the biopsy score, some of which may be reversible, others not. Additionally, she should have been scored IIA or IIB - there is a significant difference in the scores, so you should determine which (IIA = 50-80%; IIB = 10-50% chance of live foal production).
Endometrial or glandular fibrosis may be the cause of the pregnancy loss at or about 90 days, and should show in the biopsy.
If there is nothing that is alarming in the biopsy score, have a good pre-breeding reproductive work up performed, breed at the optimal time for the frozen semen use, and make sure you follow up with requisite post-breeding management (oxytocin use is the most likely need).
Other than that, there is no reason to be too alarmed about breeding her. I have got mares in their mid-twenties pregnant with frozen semen and carry successfully to term. Good management is however the key.
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