Control of Turkey Alcaligenes Rhinotracheitis in Utah with a Live Vaccine

Abstract
During the 1980 growing season in the Sanpete Valley of Utah, .apprx. 1/2 of the 250-300 flocks of turkeys were vaccinated with an oral vaccine against Alcaligenes rhinotracheitis (ART). The vaccine consisted of a temperature-sensitive mutant of A. faecalis. Most vaccinated birds developed serum antibodies. No outbreaks of ART occurred in vaccinated flocks, although some outbreaks occurred in unvaccinated flocks. During 1979, when no flocks were vaccinated, > 90% of the flocks experienced outbreaks of ART during late summer.