Isolation of four types of bacteria that cause kidney damage in broiler chickens Harith M. Al-Hiyali , Haidar T. Al-Kabbi and Suad Abdulkarim

Abstract

This study was conducted on 80 cases of damaged kidneys received by
poultry disease diagnostic centers in Baghdad. Four microorganisms were isolated
E.coli , Proteus milabilis , Pseudomonas aregenosa and Klebsiella pneumonia
and formed 55, 22.5 , 17.5 ,and 5% of the infection respectively . While no any
kind of bacteria were isolated from kidneys of healthy chicks. To be sure the E.
coli could be a cause of kidney damage. An experimental infection with E.coli
was carried out on 40 chicks, three weeks old, and randomly divided into two
groups. Chicks of the first group was inoculated intravenously with 0.5 ml of field
isolated E. coli suspension containing 2x107 colony forming unit (CFU), while the
second group was inoculated with 0.5 ml distilled water and considered as control
group. The results revealed that chicks inoculated with E.coli showed 70%
mortality rate with severely congested swollen kidneys with acute interstitial
nephritis. However, this study gave information on kidney damage widely spread
at this time; therefore, it could be recommended for other studies to be hold in the
future on the other causative agents of each case.