Some of my relatives have a dairy farm. One time they had to put down a young cow and had it cut for beef/veal for themselves, since it was so sudden and unplanned. They told the cow's name, what had happened to it, what its temperament had been like. That was enough to make the eating experience weird and a bit offputting.
My aunt had a turkey named Jason that was an absolute bastard who attacked anyone who came near the house. My hatred of him made it extra delicious when we ate him for Thanksgiving.
Knew a girl who lived on a farm, and she had a pet sheep for 7 or 8 years, since it was a lamb. It's her 21st birthday and they put her sheep on the spit.
Couldn't eat any of it myself. Guess farmers are bred tougher than us townies.
Yeah... I kinda think that's an experience every omnivore should have. Raise something with your own hands, then kill and eat it. If you can't do that, at least you now know your hypocrisy.
The bulls, yeah, that's a planned pick-up to a meat farm or to the slaughterhouse, easy to distance yourself from mentally AFAIK. Not the heifers you've named and intended to keep.