The studies on pig manure utilisation are focused on two areas: the use of the manure to fertilise soil and the treatment of the raw and digested manure. Essentially, this book concentrates on the separation of the treated slurries into liquid and solid phases, and the subsequent use of the two obtained products. The fertilising effects of the manure originating from Polish pig farms on the croplands belonging to the pig farm owners are discussed. Due to high phosphorus content in the soil, the recommended manure dose was decreased to match the acceptable quantities of both phosphorus and nitrogen. Additionally, a newly developed complex pig manure treatment and filtration technology called the AMAK process is presented.