Virulent Newcastle disease is one of the major diseases in poultry. It is termed virulent because of the high vulnerability of poultry birds to Newcastle disease.
poultry
Organic Poultry Farming Guide: Housing, Feeding, Medications, And More
Organic poultry farming is an extensive system of rearing chickens. It is extensive in the sense that chickens are raised under natural conditions. The conventional system of rearing chickens is an intensive system; this is because chickens are kept in a controlled environment, alien to their physiological and metabolic activities.