Hey Guys,
The original post asked about meat animals on a farm in a survival situation, not in an ordinary situtation. Cattle require medicines, antibiotics, equipment, grain, lots of salt, etc. etc. etc., none of which would be available.
Chickens require scratch corn, "dosing", and lots of other stuff. They are also filthy to the max and their droppings (splatters) carry diseases that are fatal to humans.
As mentioned, I've raised both of them.
Again, the answer is goats and rabbits. (I've raised them too.)
And, no way are chickens easier to raise than rabbits. Rabbits stay put in their small hutches until you are ready to eat them. And, they don't squawk all day long. :-)
Manny