STRESS-INDUCED GIZZARD EROSION IN CHICKS .1. GROSS AND HISTOPATHOLOGICAL FINDINGS

A model of stress induced gizzard erosions is described. Three day old chickens were deprived of food for 24 h, and after that they were imm ersed in tap water (17-degrees-C) for five seconds. Group A was sacrif iced immediately before being subjected to stress, group B one hour, g roup C two hours and group D three hours after water immersion stress. Each group consisted of 10 animals. Gizzard lesions in group A were v ery mild and the main feature was discoloration of the gizzard lining. In groups B, C, and D the lesions were more severe and they were char acterised by gizzard erosions, ulcerations and hemorrhages especially pronounced in group D. This model produced lesions in all stressed ani mals.