Can you please provide the references that demonstrate how cow auctioneers handle the auctioning of pregnant cows?
For instance, I happen to know (we own a farm with cows), that at auction there are terms for the cows for sale such as "heiferettes" or "first-calvers" or "cow-calf pairs" which are sometimes called "3-in-1's" Now, it's the 3-in-1s that apply here. Those are cows that are pregnant with a calf at side. As far as my understanding goes, so long as it is known that the cow is pregnant, she is sold as a 3-in-1. It actually doesn't matter if she's 1 day pregnant or 1 day from full term.
So unfortunately, I think once again your make believe ideas don't have any support.
A human embryo is a human at the very beginning of its development. That development began at conception and will continue for another couple of decades.