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Cattle Boards
Breeding / Calving Issues
Synchronization mistake
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<blockquote data-quote="Lucky_P" data-source="post: 1027987" data-attributes="member: 12607"><p>What cp said. Bet you won't notice much difference - the GnRH you give at CIDR insertion is mainly to luteinize any that might have been in heat in the 2-3 days before you put 'em in.</p><p>Guess you could have run 'em back through and hit 'em with GnRH, but may not really even be necessary.</p><p> </p><p>Were you doing a 5- or 7-day protocol? I know there are some 14-day CIDR protocols out there, but my therio buddy says that after 9 days, the oocytes 'age', and viability is diminished.</p><p>We used to do a 7, but switched to 5 a year or two ago; requires an extra trip through the chute, 'cause you give two shots of prostaglandin(we use Estrumate) 8-12 hrs apart, after puling CIDRS. </p><p>Prefer to breed on observed heats. Rarely do timed AI here - if they don't show in the prescribed timeframe, they usually just go out to the bull; especially in the Spring season - just gets too hot to keep trying to AI cows once you get into June, and forget July...</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1027987, member: 12607"] What cp said. Bet you won't notice much difference - the GnRH you give at CIDR insertion is mainly to luteinize any that might have been in heat in the 2-3 days before you put 'em in. Guess you could have run 'em back through and hit 'em with GnRH, but may not really even be necessary. Were you doing a 5- or 7-day protocol? I know there are some 14-day CIDR protocols out there, but my therio buddy says that after 9 days, the oocytes 'age', and viability is diminished. We used to do a 7, but switched to 5 a year or two ago; requires an extra trip through the chute, 'cause you give two shots of prostaglandin(we use Estrumate) 8-12 hrs apart, after puling CIDRS. Prefer to breed on observed heats. Rarely do timed AI here - if they don't show in the prescribed timeframe, they usually just go out to the bull; especially in the Spring season - just gets too hot to keep trying to AI cows once you get into June, and forget July... [/QUOTE]
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Synchronization mistake
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