Moving or hauling A-I cattle day of breeding is more critical to success than the ET cows are for this reason.
An A-I cow has yet to ovulate, and ANY type of hightened anxiety will release adrenilen. This is NOT good for sperm transport or ovulation timing.
An Emryo cow has ovulated over a week before, and you are putting a living viable mutiple cell embryo in her uterus. The adrenalin factor is also a reason to be carefull - but in a different way. A VERY upset and unrully cow at this timing will release the adrenalin -- but in her case -- this will cause a signal internally for the release of prostoglandins from the uterin lining. For themost, this is minimal and has little affect.
What WILL affect you is a change of diet for the first 45 days ( Or until the embryo is firmly attached to the cotoledon in the uterus) To prevent premature abortions, aclimate your recips to the environment wher ethey will be for thenext 45 days. IE -- if prepped in a dry lot, keep the ones that fail to return to heat there for 2 heat periods after transfer. If prepped and synced on grass, you are good to go right back. Reason -- rapidly fgrowing grass in early spring will have an elevated level of Estrogen -- the very hormone you DO NOT want to have in a pregnant cow unless already aclimated to it.
Bottom line -- ET dry lot -- STAY dry lot.
I don't reccomend hauling cows to the vet to have them bred and then hauling them back same day. A-I cows need 48 hours to ovulate, fertilize and transport the egg to the uterus. Stress at this itme is NOT good. A different scenario than ET totally.
I do hope this helps all who were curious. Of course I am not the final word here -- but I know what works after all these years.
Terry
So, if we wait say 5 days after AI a heifer or cow and move her to a pasture with grass that they haven't seen before is that ok? We don't have enough land near our home place where we have to do our AI to have enough grass for them during breeding. Would it work if we baled off the pasture they are going to and fed that to them during the breeding season so they don't have quite a big change in diet? It would not work well for us to wait 45 days after AI and our ET work before we would take them to pasture because that would be about August and the grass would be gone/too mature/long...
Thanks