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Cattle Boards
Breeding / Calving Issues
Odd Estrus Cycle
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<blockquote data-quote="regolith" data-source="post: 1094468" data-attributes="member: 9267"><p>I always used that rule too - if I could get them to about 6 1/2 weeks I considered them safe in calf and getting a vet to PD them wasn't likely to tell me any different.</p><p>This year has turned that on its head <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite15" alt=":cry:" title="Crying :cry:" loading="lazy" data-shortname=":cry:" /> I had one cycling regularly till I mated her on 12 Oct, was positive she was in calf, saw her in standing heat last week <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite15" alt=":cry:" title="Crying :cry:" loading="lazy" data-shortname=":cry:" /> </p><p></p><p>With premating heats and AI the cows always seem to come in like clockwork, regularly every 3 weeks. Then I'd turn the bull in after 6 wks AI and he'd have his work cut out for the first week with cows short-cycling, long-cycling, all out of routine. Started using a bull instead of Cidrs to bring cows into heat for a few years...</p><p>This year is the first time all AI and the week I would normally turn the bull out - the same thing happened. A bunch of cows cycled out of time during the first week in December. Now I'm confused.</p></blockquote><p></p>
[QUOTE="regolith, post: 1094468, member: 9267"] I always used that rule too - if I could get them to about 6 1/2 weeks I considered them safe in calf and getting a vet to PD them wasn't likely to tell me any different. This year has turned that on its head :cry: I had one cycling regularly till I mated her on 12 Oct, was positive she was in calf, saw her in standing heat last week :cry: With premating heats and AI the cows always seem to come in like clockwork, regularly every 3 weeks. Then I'd turn the bull in after 6 wks AI and he'd have his work cut out for the first week with cows short-cycling, long-cycling, all out of routine. Started using a bull instead of Cidrs to bring cows into heat for a few years... This year is the first time all AI and the week I would normally turn the bull out - the same thing happened. A bunch of cows cycled out of time during the first week in December. Now I'm confused. [/QUOTE]
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