Factor disease
As factors disease is known diseases that can not be assigned exactly one cause, but are required for their appearance more favorable circumstances. Factor diseases play a role especially in animals in intensive agriculture .
In the case of infectious factor diseases, the disease-causing power ( pathogenicity ) of the pathogen alone is not sufficient; there are usually germs that are everywhere. Additional components are required that weaken the immune system . These can be other infections, stress , deficiencies in the housing conditions (stable climate, pollution of the air, high animal density, drafts, inadequate cleaning and disinfection ), very high production rates (milk yield, meat production), insufficient feeding and genetic factors.
Factor diseases can also be of a non-infectious nature, such as abomasum displacement or elbow dysplasia .
Individual evidence
- ^ Anton Mayr: Medical microbiology, infection and epidemic theory . Georg Thieme Verlag, 2007, ISBN 9783830410607 , p. 18