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Cattle Boards
Breeding / Calving Issues
How accurate should I expect ultrasound to be?
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<blockquote data-quote="dun" data-source="post: 1168834" data-attributes="member: 34"><p>Our vet has a window of about a week that he likes to scan. It's earlier then I would have thought. He says that sexing the embryo at that stage is easiest. Before it is too small and after it's harder to see it clearly, not sure if he looks for the testicles or the penis, but he was 100% right when we had him do it. We had some AIed cows that before we decided which ones we would sell we wanted to know the calf's gender. All other years we just have him palpate and he's usually within a week of right for the pasture bred cows. Last year we had a cow we planned on selling since I knew she had bred late, just didn;t know how late. He said he couldn;t tell for sure but thought she felt bred. A couple of mnths later we hauled her to the ale barn and they palpated her bred, she would have been about 2 1/2 weeks bred when he palped her. He is a fairly experienced vet. Worked at MARC in the reproduction unit for a couple of years and taught reproducition at kansas state for a bit.</p></blockquote><p></p>
[QUOTE="dun, post: 1168834, member: 34"] Our vet has a window of about a week that he likes to scan. It's earlier then I would have thought. He says that sexing the embryo at that stage is easiest. Before it is too small and after it's harder to see it clearly, not sure if he looks for the testicles or the penis, but he was 100% right when we had him do it. We had some AIed cows that before we decided which ones we would sell we wanted to know the calf's gender. All other years we just have him palpate and he's usually within a week of right for the pasture bred cows. Last year we had a cow we planned on selling since I knew she had bred late, just didn;t know how late. He said he couldn;t tell for sure but thought she felt bred. A couple of mnths later we hauled her to the ale barn and they palpated her bred, she would have been about 2 1/2 weeks bred when he palped her. He is a fairly experienced vet. Worked at MARC in the reproduction unit for a couple of years and taught reproducition at kansas state for a bit. [/QUOTE]
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How accurate should I expect ultrasound to be?
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