I think they said the bull couldn't handle being castrated, he was too old. And that's why he died.
"Post-Rapture, feel free to use our pool. You know, if it isn't boiling."

Interesting I was left with the impression that Flyboy killed the bull the next day because it had been subjected to the indignation.
In the cut I watched the steer is discovered outside of the corral and I thought for sure that the discussion is about whether or not the mother is aware of the situation.

yup..she did, and then downed it in that holding cage thinggy, by pressing that red button. You need to watch it again to know why, it's much random info to be repeated