What is the "gut health" concept that everyone talks about? Why is it important?
Enzyme-linked immunosorbent assay, serum virus neutralization test, haemoagglutination test, and immunoperoxidase monolayer assay are explained.
Feeding, biosecurity and concomitant diseases as factors involved in the perpetuation of Salmonella in the farm.
Nowadays several laboratory techniques allow to evaluate the cellular immune response.