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Rotocarona-virus MLV
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<blockquote data-quote="msscamp" data-source="post: 186094" data-attributes="member: 539"><p>Unless there was a problem at the manufacturer, which does not appear to be the case, different lot numbers have little, if anything, to do with it. Lot numbers are simply a way to track shipments. Rotocorona virus is a source of scours - otherwise known as digestive tract issues - as is e-coli, as is cryptosporidium, as are a couple of other things, as well as environmental factors. The thing I don't think you're taking into account is that a calf does not have any kind of a developed immuno system that can respond to a vaccine until he/she reaches about 3-4 months of age or thereabouts. To vaccinate a newborn calf is pretty much an act of folly, as well as a waste of the vaccine and possibly the calf, as you have discovered. However, vaccinate the cow and the immunities are passed on to the calf in a form that he/she can absorb and utilize through the colostrum and they will protect the calf from the virus. Just my thoughts.</p></blockquote><p></p>
[QUOTE="msscamp, post: 186094, member: 539"] Unless there was a problem at the manufacturer, which does not appear to be the case, different lot numbers have little, if anything, to do with it. Lot numbers are simply a way to track shipments. Rotocorona virus is a source of scours - otherwise known as digestive tract issues - as is e-coli, as is cryptosporidium, as are a couple of other things, as well as environmental factors. The thing I don't think you're taking into account is that a calf does not have any kind of a developed immuno system that can respond to a vaccine until he/she reaches about 3-4 months of age or thereabouts. To vaccinate a newborn calf is pretty much an act of folly, as well as a waste of the vaccine and possibly the calf, as you have discovered. However, vaccinate the cow and the immunities are passed on to the calf in a form that he/she can absorb and utilize through the colostrum and they will protect the calf from the virus. Just my thoughts. [/QUOTE]
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