| pathogenicity of mycoplasma gallisepticum and mycoplasma imitans in red-legged partridges (alectoris rufa). | groups of 3-day-oid red-legged partridges were infected intranasally either with the s6 strain of m. gallisepticum or with an m. imitans strain from a partridge with sinusitis. starting 6-8 days post-infection (p.i.) birds in both groups developed signs of depression, nasal exudation, tracheal rales, sneezing, gasping, head shaking, watery eyes and eye scratching. the most outstanding feature was bilateral swelling of the infraorbital sinuses. morbidity reached 100% in the m. gallisepticum infec ... | 1998 | 18484030 |