Abstract:
Susceptible categories of pigs for the occurrence of respiratory diseases are categories in postweaning and
fattening. The spectrum of clinical symptoms is very wide and includes not only respiratory symptoms, but
also many other symptoms that appear as a consequence of systemic disorders, depending on the type of
causative agent. Cough can be of different frequency, intensity and productivity, and difficulty breathing can
be of different degrees. Respiratory diseases may be accompanied by stunted growth, rough bristles,
anorexia, reduced daily gain and lethargy. Disseminated systemic disorders often include symptoms
suggestive of central nervous system disorders, swollen joints and lameness, followed by reproductive
disorders or sudden death. Pathomorphological changes are also of different character and severity. Nonspecific
factors predispose to the occurrence of initial damage or contribute to the further spread of already
existing lesions. In this article, we wanted to give an overview of our research on respiratory diseases of viral
etiology in pigs from commercial farms.
