Biological Conversion of Poultry and Animal Waste to a Feedstuff for Poultry

SummaryPoultry and animal waste can be converted into a high protein feed-stuff by biological digestion and degradation, oxidation or by the action of micro-organisms and algae.These processes might help to solve the accummulating problem of disposal of poultry and animal waste, which in some cases are not suitable as soil fertilizers and cause pollution problems. International co-operation between advanced industrialized countries and developing areas is not only desirable but essential to overcome malnutrition by increasing the animal protein supply in the form of meat and eggs.Only a limited number of published data are available but nevertheless five types of treated waste are considered useful under certain conditions as feedstuffs for poultry: 1. Housefly pupae meal - caged layer manure degraded by housefly larvae.2. Earthworm meal - another biodegradation of caged layer manure.3. Liquor and residue from a ditch used for oxidizing swine liquid manure.4. Aerobic fermentation of poultry manure.5. Meals produced from algae grown in ponds of sedimented animal waste and sewage.