[Course of transmissible gastroenteritis on a swine-breeding farm]

Epizootiologic studies were carried out from the introduction of the transmissive gastroenteritis on the Enterprise up to the end of 1984. Clinical observations and morphologic survey were conducted on the infected animal farms. The diagnosis was based on both virologic and serologic investigations with routinely employed methods. The basic reason for the occurrence and spread of transmissive gastroenteritis on the Enterprise were shown to be omissions in the system of prevention measures with regard to infectious diseases, i. e., the functioning of farms as open units and the intense connections between them. The basic way of spreading the infection was shown to be the removal of animals from healthy to affected farms. The part played by other ways of infection transmission proved negligible, and the strict adherence to veterinary and sanitary requirements of protection guaranteed to a high extent the prevention of transmissive gastroenteritis on swine-breeding complexes and farms. It was also found that the disease assumed a stationary character on the infected farms, with periodic enzootic outbreaks in some of them associated with the nonobservance of feeding and raising technologies.