Abstract

This study has been done for investigation the macro and microscopic lesion which occurs in foot of backyard chickens affected with Bumble foot and also to determined the severity of this affection, 50 case collected from backyard chickens suffered from Bumble foot from different areas of Mosel province, the affection classified according to macroscopic findings in to 4 degrees, the mild, moderate, sever and very sever cases. There was only swelling of foot pad in mild degree but in the moderate there was discoloration and hyperkeratosis with erosion and crust, other wise the sever cases revealed sever hyperkeratosis and swelling which extend to digits area and in the very sever cases there was sever ulceration and fibrosis. Histopathological findings, reveald degeneration of muscle fiber with congestion of blood vessels in the dermis layer in mild cases but in moderate case there was hyperkeratosis and erosion with infiltration of inflammatory cells with hyperplasia, same findings can be seen but in more sever form with presence of fibrosis in sever cases while in very sever cases there was necrosis and thrombosis with an extensive fibrosis. This study revealed that sever degree of bumble foot affection had the greatest percentage of prevalence than the moderate cases but the very sever and the mild cases occur in less percentages.