Poultry rearing farm

Parasitic poultry diseases, including hexamitiasis of turkeys, are caused by roundworms, tapeworms, lice, and mites. Again, modern methods of sanitation, prevention, and treatment provide excellent control. Mass production of chicken meat and eggs began in the early 20th century, but meat production had outstripped egg production as a specialized industry by the middle of that century. The market for chicken meat has grown dramatically since then, with worldwide exports reaching nearly 12.5 million metric tons (about 13.8 million tons) by the early 21st century.