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New bull scours
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<blockquote data-quote="SBMF 2015" data-source="post: 1624866" data-attributes="member: 39695"><p>Yearlings are not old enough to test for Johnes. Yes you can run the test, but the incubation period hasn't been long enough.</p><p>I got in on cleaning up a cow herd so they could achieve a herd free status. The state vets did not want to test any cow that wasn't at least on her 2nd lactation.</p><p></p><p>I would however make sure a new bull has been BVD tested to make sure he's not a PI. They take a notch out of their ear and send it to a lab.</p></blockquote><p></p>
[QUOTE="SBMF 2015, post: 1624866, member: 39695"] Yearlings are not old enough to test for Johnes. Yes you can run the test, but the incubation period hasn't been long enough. I got in on cleaning up a cow herd so they could achieve a herd free status. The state vets did not want to test any cow that wasn't at least on her 2nd lactation. I would however make sure a new bull has been BVD tested to make sure he's not a PI. They take a notch out of their ear and send it to a lab. [/QUOTE]
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