I read about that too. It's been a while since they had full red cattle.
I'm not trying to be argumentative, just asking.
Why haven't they been sacrificing for two thousand years? God didn't even ask for a temple. When we think about it, you'd think they'd be doing it all along.
Before Christ, there were specific instructions for the alter to be made of a pile of rocks or soil. There wasn't much special about it other than what not to do, like no tool work on the stones.