GENETICS BASIS OF DISEASE RESISTANCE IN CHICKEN

Natural resistance to disease has been recognised for a long time as an important factor in disease control. There are two types of resistance to infectious diseases: resistance to infectious and resistance to disease development. Resistant to infection or true resistance reduces or prevents infection and is rare. It is usually specific for a pathogen and inherited in Mendelian fashion. Resistance to disease development or disease tolerance is less specific with regard to type of pathogen.