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Cattle Boards
Breeding / Calving Issues
Deformed calve
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<blockquote data-quote="dyates" data-source="post: 487938" data-attributes="member: 7137"><p>One possible, but not likely, answer is your vaccine. Was the heifer bred at the time of the vaccination? If so, how far along? Despite labels that say otherwise, some of the MLV vaccines can cause severe birth defects if given early in gestation. I have been advised by several veterinarians to never use any MLV vaccine on a pregnant animal. Of particular concern is BVD. I have been told it is OK to use a MLV on a pregnant animal if she had been previously vaccinated with exactly the same strain. Why take a chance. We only use killed vaccines to booster pregnant animals.</p></blockquote><p></p>
[QUOTE="dyates, post: 487938, member: 7137"] One possible, but not likely, answer is your vaccine. Was the heifer bred at the time of the vaccination? If so, how far along? Despite labels that say otherwise, some of the MLV vaccines can cause severe birth defects if given early in gestation. I have been advised by several veterinarians to never use any MLV vaccine on a pregnant animal. Of particular concern is BVD. I have been told it is OK to use a MLV on a pregnant animal if she had been previously vaccinated with exactly the same strain. Why take a chance. We only use killed vaccines to booster pregnant animals. [/QUOTE]
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Breeding / Calving Issues
Deformed calve
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