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Cattle Boards
Breeding / Calving Issues
CIDR select protocol
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<blockquote data-quote="bigag03" data-source="post: 819727" data-attributes="member: 9247"><p>Sorry for the delay; I have been away for a while.</p><p></p><p>Yes, I do believe you will have a higher conception rate with prostaglandin on day 6. If you give prostaglandin at the same time you pull the CIDR, you will have two distinct populations of cows. 1) Those cows that are "ready" to come in heat because they do not have a Corpus Luteum (CL) present are just waiting for you to remove the CIDR and 2) Those cows that have a CL that will have to regress in addition to pulling the CIDR. By giving prostaglandin on day 6, you can increase the likelihood that CL's are regressed so that these cows come in heat just as fast as those that had no CL.</p></blockquote><p></p>
[QUOTE="bigag03, post: 819727, member: 9247"] Sorry for the delay; I have been away for a while. Yes, I do believe you will have a higher conception rate with prostaglandin on day 6. If you give prostaglandin at the same time you pull the CIDR, you will have two distinct populations of cows. 1) Those cows that are "ready" to come in heat because they do not have a Corpus Luteum (CL) present are just waiting for you to remove the CIDR and 2) Those cows that have a CL that will have to regress in addition to pulling the CIDR. By giving prostaglandin on day 6, you can increase the likelihood that CL's are regressed so that these cows come in heat just as fast as those that had no CL. [/QUOTE]
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