8. Etiology
Salmonella Pullorum (PD)
Salmonella Gallinarum (FT)
Now they are a single species, S. enterica
subsp. enterica serovar Pullorum-Gallinarum
31. مرگ از پس های دریافتPD
A. Enlarged liver showing congestion and small necrotic foci
32. مرگ از پس های دریافتPD
B. Heart from young
chick with white
nodules representing
myocarditis
Such nodules can be
confused for tumors,
such as Marek’s
disease
33. مرگ از پس های دریافتPD
C. Nodular lesions in the heart; note the thickened yellowish pericardium (reflected).