Abstract: An animal production building which has animal living quarters with a floor at least partially slatted with a manure deposition area beneath the slatted floor, a ventilation system which provides air motion through the animal quarters downwardly into the manure deposition area and through the manure deposited therein and outwardly of the building which processes the manure with bulking agents into a dry organic nutrient. A method of processing animal waste is also provided including the steps of providing animal quarters over a waste deposition area, depositing animal waste into the waste deposition area, removing the water from the waste, drying the waste, and mixing the waste with a bulking agent.