Very nice, I think the biggest thing to worry about is not to be in too much of a hurry to interfere yourself, observe from a distance and most of the time their natural instincts will have the situation well under control.
Ken
If you know when your show heifers were on heat I would wait a week before starting the proticol just to put them in a better stage to respond to the prostaglandin.
Ken
I had one years ago when I was starting with my herd from mixed sources and I believe this calf was BVD affected, whether a PI or later inutero infection where you just get defects. It was a runty calf not worth trying to save.
Ken
I haven't done many C sections however the reason is pretty much as described previously in that the rumen displaces all the intestines to the right side including the calf however in late pregnancies the calf occupies a big area and parts will be accessible behind the rumen to access the uterus...
Just back to the original question on manual testing, it is easier to give a +ve result than a -ve. If you go in at 4 mths and start bouncing a calf in there you are done and dusted. If you can't find that then you have to go back and find the uterine horns and carefully palpate those for any...