When is an animal at its most content? In our opinion, its when it's out on fresh, vibrant, and diverse pasture. All of our livestock are out on pasture including poultry and hogs. Animals with a multi-chamber stomach (ruminants), thrive on grass. The bacteria in their digestive system is designed to breakdown grasses (cellulose); however, when they are fed grain, the bacteria changes and the animal is not as efficient at converting its feed.