Phagocytic activity of chicken peritonial macrophage against Salmonella typhimurium poultry isolates

Abstract

Phagocytic index (PI) of chicken peritoneal macrophages was assayed in resident and protease peptone elicited macrophages after in vitro infection with 4 S. typhimurium poultry isolates, E 1841 (nonvirulent), E 2336 (less virulent), E 2187 and E 2385 (virulent) and a virulent reference European strain F 98. Higher phagocytic index of elicited chicken peritoneal macrophages after in vitro infection with S. typhimurium isolates. The PI of resident chicken peritoneal macrophages ranged from 123±4.22 (with reference strain F 98) to 182±6.05 (with isolate E 2336). The maximum PI of elicited macrophages was observed with isolate B 1841 (230.25±4.98) and lowest with reference strain F 98 (159.75 ± 3.73).