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Cidrs
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<blockquote data-quote="DrDave" data-source="post: 290720" data-attributes="member: 5096"><p>The Canadian and Mexican CIDRs that were being used in the US before they had FDA approval had twice the dosage of progesterone in them as compared to the ones currently marketed in the U.S., which was why we usually used them twice in cows, and could use them for a third time in heifers. I don't try to re-use the FDA approved ones a second time, simply because I figure that one lost heat and/or infection is going to cost me more than I'll save by re-using the CIDRs.</p></blockquote><p></p>
[QUOTE="DrDave, post: 290720, member: 5096"] The Canadian and Mexican CIDRs that were being used in the US before they had FDA approval had twice the dosage of progesterone in them as compared to the ones currently marketed in the U.S., which was why we usually used them twice in cows, and could use them for a third time in heifers. I don't try to re-use the FDA approved ones a second time, simply because I figure that one lost heat and/or infection is going to cost me more than I'll save by re-using the CIDRs. [/QUOTE]
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