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Breeding / Calving Issues
cow not breeding back
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<blockquote data-quote="Caustic Burno" data-source="post: 1495863" data-attributes="member: 694"><p>Yes!</p><p></p><p>"Bulls are commonly both vaccinated for leptospirosis and treated with antibiotics to clear the "carrier state." Bradley Mills, DVM, says he addresses the bull problem through antibiotics to clear infections and vaccinations to prevent re-infections. "There"s good evidence that oxytetracycline will clear it in cows, but there"s a question about curing it in bulls."</p><p></p><p>Bulls are probably harder to clear, agrees Carole Bolin, DVM, PhD. "Our diagnostics are not as good in bulls. A lot of people are using antibiotics in bull studs. They"ll have bulls that get a titer to Hardjo-bovis, and they want that titer to be gone, but antibiotics are largely ineffective in making the titer decrease."</p><p></p><p>How effective the antibiotics are in actually curing the bull of the infection is a separate matter. In theory, it should work, but it may not work as well as it apparently does in cows. Bolin says the drug regimen should eliminate the infection from the kidneys, but some think that the drugs do not penetrate the tissues of the bull"s reproductive tract sufficiently to have the desired effect."</p></blockquote><p></p>
[QUOTE="Caustic Burno, post: 1495863, member: 694"] Yes! “Bulls are commonly both vaccinated for leptospirosis and treated with antibiotics to clear the "carrier state." Bradley Mills, DVM, says he addresses the bull problem through antibiotics to clear infections and vaccinations to prevent re-infections. "There"s good evidence that oxytetracycline will clear it in cows, but there"s a question about curing it in bulls." Bulls are probably harder to clear, agrees Carole Bolin, DVM, PhD. "Our diagnostics are not as good in bulls. A lot of people are using antibiotics in bull studs. They"ll have bulls that get a titer to Hardjo-bovis, and they want that titer to be gone, but antibiotics are largely ineffective in making the titer decrease." How effective the antibiotics are in actually curing the bull of the infection is a separate matter. In theory, it should work, but it may not work as well as it apparently does in cows. Bolin says the drug regimen should eliminate the infection from the kidneys, but some think that the drugs do not penetrate the tissues of the bull"s reproductive tract sufficiently to have the desired effect.” [/QUOTE]
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