Figure 1

Representative photographs illustrating changes in different intestinal segments of turkeys challenged orally withC. perfringens. The typical responses of the host included: A multifocal, minimal to mild hyperemia in the duodenum (blue arrow), and advanced necrosis in connective tissue (green arrow) in the duodenum; B lumpy coating reminiscent of a pseudomembrane (yellow arrow) in the jejunum; C manifested swollen vessels on the jejunum surface (white arrow); D multifocal hyperemia and hemorrhages (red arrow) and fibrinous coating on the surface of the caeca (purple arrow).