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Cattle Boards
Breeding / Calving Issues
How accurate should I expect ultrasound to be?
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<blockquote data-quote="Jessica06" data-source="post: 1166475" data-attributes="member: 5612"><p>Are they using their arm, or a probe? I have found that you can ocassionally miss a late 2nd or 3rd trimester pregnancy in a really big, deep bodied cow. Uncommon, but it does happen. Because of this, I took a class to learn palpation and palpate every open that looks questionable to me on the screen. Open uteruses are easy to find and it only takes a second. I don't know how much time your tech spends on an open, but I usually take a minute, maybe two, figuring that the time lost will be made up on the breds that can be found almost instantly.</p><p></p><p>As far as accuracy goes, <strong><span style="color: #FF0000">I think that it depends mainly on how long they spend on the opens</span></strong>. About 20% of the time, if I don't see a pregnancy right away, I eventually find it if I keep searching for a while longer. In the last group I did, I had a 50 day fetus sitting right under the spine...I had to turn my probe completely upside down to find it. </p><p></p><p>You figure blood testing is supposed to be 95-99% accurate, with the average palpator in the 70-90% range. I figure ultrasound should be 90%+, to be competitive with the other methods. Any decent tech should be way above that consistently, impo.</p></blockquote><p></p>
[QUOTE="Jessica06, post: 1166475, member: 5612"] Are they using their arm, or a probe? I have found that you can ocassionally miss a late 2nd or 3rd trimester pregnancy in a really big, deep bodied cow. Uncommon, but it does happen. Because of this, I took a class to learn palpation and palpate every open that looks questionable to me on the screen. Open uteruses are easy to find and it only takes a second. I don't know how much time your tech spends on an open, but I usually take a minute, maybe two, figuring that the time lost will be made up on the breds that can be found almost instantly. As far as accuracy goes, [b][color=#FF0000]I think that it depends mainly on how long they spend on the opens[/color][/b]. About 20% of the time, if I don't see a pregnancy right away, I eventually find it if I keep searching for a while longer. In the last group I did, I had a 50 day fetus sitting right under the spine...I had to turn my probe completely upside down to find it. You figure blood testing is supposed to be 95-99% accurate, with the average palpator in the 70-90% range. I figure ultrasound should be 90%+, to be competitive with the other methods. Any decent tech should be way above that consistently, impo. [/QUOTE]
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How accurate should I expect ultrasound to be?
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