Observations on Infectious Synovitis

Abstract

IN REVIEWING the literature of infectious synovitis it is observed that the etiological agent or agents causing the disease remain in doubt. Olson (1956) has reported isolating a large particle virus, as well as pleuropneumonia like organisms (PPLO) and two unidentified viruses from disease outbreaks. Cover (1956) has described the etiological agent as a virus or virus-like organism, and Cover and Benton (1957) have recently been able to isolate the agent from many of the internal organs including the testes and ovary. Leece et al. (1955) cultivated the virus on heart fibroblasts. Wills and Delaplane (1955) suggested possible hatching egg transmission in one experiment. In reference to the control of the disease, differences in results have occurred with both furazolidone (nf-180) and antibiotics. Olson et al. (1956a) reported that in birds inoculated with two of seven strains of infectious synovitis, the infection could not be controlled by feeding nf-180 at . . .