Need quick A.I. timing advice

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HOSS

HOSS

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Joined
Jun 1, 2005
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4,348
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Middle Tennessee
I need some quick advice on doing an A.I. slightly off of the timing schedule. Because of my work schedule I can't be johnny on the spot for the timed protocol. This is for A.I. on cows. I am using the standard 7 day CIDR protocol Co Synch. I plan to give a shot of GNRH at 7:00 pm tonight and insert the CIDR. On 8/10 at 7pm I will administer a shot of lute and remove the CIDR. By the protocol I should A.I. at 11:00 a.m. on 8/13 but I wont be able to until about 3 pm. How much difference will the 4 hours make in conception %. I don't have lights down at the corral or I would do the 1st two steps at 11 pm. I could probably push the 1st two steps to the 8 pm area and that would make me be late to A.I. by 3 hours. Any thoughts? Will the 3 or 4 hours be a deal breaker?
 
I do mine at 72hrs after the lute anyway which will put you at 7 pm . i do patch them and breed the ones that respond early and i just do that on am or pm rule. I think you have 24 hrs after standing heat. i think you will be fine either way as long as they come into heat.
 
Thanks bse. I will probably push my gnrh +cidr to as late as possible tonight and the same for the lute on the 10th and then try to breed at 3 pm on the 13th. I have been pretty sucessful doing it right on the hour as the protocol calls for. I have never strayed more than 15 minutes so I am a bit nervous about 3 or 4 hours. I know there is usually a good sized time window I just have never tried it.
 
who AI's this time of year i would go natural cover with your bull, seems early for up this way..
 
double v":381m7vvb said:
who AI's this time of year i would go natural cover with your bull, seems early for up this way..
Click to expand...
DV, I have a couple of registered balancer cows (first calvers) that I am A.I.'ing for their 2nd calf. I bought them bred and they didn't calve till later in the spring than I normally like. Being heifers I needed to give them time to recover before breeding them back.
 
Give them time just hold them over as early fall calvers, would be better in the long run for marketting.
 
If they make the cut and don't get sent to the salebarn the calves will remain in my herd anyway.
 

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