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Author Topic: Question on Trying to AI to Soon After Calving  (Read 3726 times)

Offline chambero

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Question on Trying to AI to Soon After Calving
« on: November 11, 2008, 03:55:51 PM »
I've got a few late calving heifers mixed in with a group we will AI in early December.  When I put CIDRs in some of those late calvers may only be just over 30 days after calving.  I have no expectation that they will stick to AI, but will I help or hurt them to breed naturally later on by putting a CIDR in them.  We run these things through the chutes in a hurry and I'm trying to decide if I need to bother separating the late calvers out beforehand.  I won't even actually AI them, but if it might jump start their cycles I'll go ahead and give them the CIDR/shots.

Offline LN

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Re: Question on Trying to AI to Soon After Calving
« Reply #1 on: November 11, 2008, 04:00:39 PM »
For the CIDR to work the late calving heifers have to be producing a CL which they probably won't be. A shot of FSH should kickstart their ovaries for ovulatiing.
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Offline CAB

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Re: Question on Trying to AI to Soon After Calving
« Reply #2 on: November 11, 2008, 04:16:51 PM »
I would go ahead and set them up and breed'em. I get over 50% on anything 30 days post and it won't hurt them on down the road. I wouldn't use high priced semen, but I would definately AI them. Brent

Offline Jill

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Re: Question on Trying to AI to Soon After Calving
« Reply #3 on: November 11, 2008, 04:46:40 PM »
There was a thread on CIDR usage to jump start them and I don't remember what it was under, but if I remember correctly putting them through the protocol cycles them earlier than if you hadn't used a CIDR.

Offline justintime

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Re: Question on Trying to AI to Soon After Calving
« Reply #4 on: November 11, 2008, 06:14:01 PM »
A few years ago, I did a little experiment with 10 May calving cows that I had kept in a small pasture surrounding our feedlot. I had heard from some people that the CIDRs we get here in Canada could be used 3 or 4 times before discarding them. I thought I would try it on these cows. Most of these cows were only 3 weeks post calving, so I knew i was gambling. I CIDR'd the cows. pulled them and watched for heats. All 10 came in heat within 3 or 4 hours of each other and they were all AI bred, with no clean up bull used. 9 of the 10 calved AI calves in March the following year. I was open and was shipped to market.

CIDRs worked extremely well on backing this set of cows back into the calving period with the main cow herd.  I usually have over 100 CIDRs around that have been used once, from our ET program. I use these CIDRs in cows I am trying to move their calving back. I also use them in synchronizing sets of cows to AI or to be recips. I do not use used CIDRs in heifers or in donor cows. Maybe it is OK to do so, but I just haven't done it.
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Offline Kansas Karl

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Re: Question on Trying to AI to Soon After Calving
« Reply #5 on: November 11, 2008, 06:28:08 PM »
So I have a few cows that are a few months behind what I want. I would like to calve in Feburay, The first cow will be calving in late march and the last in early may.....What/how would you suggest I move them foward? Thanks
Show Barn Manager for Kimbrell Cattle Co in Hillsboro, Texas

Offline simtal

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Re: Question on Trying to AI to Soon After Calving
« Reply #6 on: November 11, 2008, 07:25:18 PM »
Putting a CIDR in a cow that short in days postpartum will really help.  I've seen it work.
....Now, they always, in the direst of circumstances, every time liberalism fails, which is every time it's tried, at some point you reach a catastrophe.....

 

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