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<blockquote data-quote="Bright Raven" data-source="post: 1499822" data-attributes="member: 27490"><p>A very similar report was published in <strong>The Kentucky Cattleman</strong>. [I posted the reference here but cannot find it]. The modified live viruses of IBR contained in the vaccine go to the ovary and disrupt the estrus cycle. The publication recommended vaccination 60 days PRIOR to breeding rather than 30 days PRIOR to breeding to allow the ovary to adjust to the disruption. The publication recommended MLV Fetal Protection vaccines because they continue to suggest that you get a better immune response.</p><p></p><p>Edited to add:</p><p></p><p>I found the post:</p><p><strong>In the circumstances you provided, the cow is open, obviously, without saying, there is no danger of abortion. Personally, I would give her 5 days postpartum to adjust then vaccinate. However, some recent research on MLV Vaccines was reported to interfere with ovary cycles (Dr. Michelle Arnold, University of Kentucky). So you should be aware of that and give the cow 4 to 6 weeks to react to the vaccine before breeding her back.</strong></p></blockquote><p></p>
[QUOTE="Bright Raven, post: 1499822, member: 27490"] A very similar report was published in [b]The Kentucky Cattleman[/b]. [I posted the reference here but cannot find it]. The modified live viruses of IBR contained in the vaccine go to the ovary and disrupt the estrus cycle. The publication recommended vaccination 60 days PRIOR to breeding rather than 30 days PRIOR to breeding to allow the ovary to adjust to the disruption. The publication recommended MLV Fetal Protection vaccines because they continue to suggest that you get a better immune response. Edited to add: I found the post: [b]In the circumstances you provided, the cow is open, obviously, without saying, there is no danger of abortion. Personally, I would give her 5 days postpartum to adjust then vaccinate. However, some recent research on MLV Vaccines was reported to interfere with ovary cycles (Dr. Michelle Arnold, University of Kentucky). So you should be aware of that and give the cow 4 to 6 weeks to react to the vaccine before breeding her back.[/b] [/QUOTE]
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