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Cattle Boards
Breeding / Calving Issues
Best Sync to Tighten Up a Calving Window ???
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<blockquote data-quote="cow pollinater" data-source="post: 940637" data-attributes="member: 14661"><p>I'm not RBB but I'll give my answer. 30 days on the late calvers. Most of those won't show you a heat but they will likely cycle. The most fertile ones will stand a good chance of becoming pregnant and the rest will stand a good chance of showing you a return heat at around fifty days, which is only five days after most people feel that a cow should be cycling but a few will be pregnant when they get there. </p><p>Throw conception rate out the window. Buy a bull that is midrange in price and get after them. Breed them when you give them the gnrh and then again in twenty four hours. The worst case scenario is that they DON'T stick and you're back to waiting for them to cycle, lkie you were already planning on doing, only this way they've had some help and will likely cycle a little faster. Semen is a cheap investment when you consider the cost of a cow staying open an extra twenty-one days...especially when she's on your cull list from the start for being a late calver.</p></blockquote><p></p>
[QUOTE="cow pollinater, post: 940637, member: 14661"] I'm not RBB but I'll give my answer. 30 days on the late calvers. Most of those won't show you a heat but they will likely cycle. The most fertile ones will stand a good chance of becoming pregnant and the rest will stand a good chance of showing you a return heat at around fifty days, which is only five days after most people feel that a cow should be cycling but a few will be pregnant when they get there. Throw conception rate out the window. Buy a bull that is midrange in price and get after them. Breed them when you give them the gnrh and then again in twenty four hours. The worst case scenario is that they DON'T stick and you're back to waiting for them to cycle, lkie you were already planning on doing, only this way they've had some help and will likely cycle a little faster. Semen is a cheap investment when you consider the cost of a cow staying open an extra twenty-one days...especially when she's on your cull list from the start for being a late calver. [/QUOTE]
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Best Sync to Tighten Up a Calving Window ???
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