At the slaughterhouse, the hog carcasses go through a rigorous inspection process by a trained USDA official. Meat cannot be sold to the consumer without the USDA inspectors approval. Spreading Like all animals, hogs produce manure. The farmer collects the manure in large pits or lagoons. Farmers empty these pits occasionally and spread or inject the manure onto their fields for fertilizer.
Manure management is a very important to the farmer.
The amount of manure used on crop land is determined by soil tests. The results from a soil test in combination with a nutrient analysis of the manure helps guide farmers as to the appropriate amount of manure to apply to their fields. Farmers want the proper amount of manure on their fields which will benefit the crops without harming production. Many professional advisors work with farmers on this. Hog manure often emits offensive odors.