Some studies on bacterial causes of retarded growth in broilers

Poultry industry in Egypt and other countries in the world is exposed to many conditions affecting growth rate and production particularly bacterial causes . So this work aimed to study some disease condition inn chickens especially those causing retardatA total of 100 random sample were collected from different localities in Sharkia and Ismailia governorates showed retarded growth. The examined samples yielded 167 positive bacterial isolate from different organs (600 organs), the percentage of the isolatThe infection of E. coli in single infection were 9 isolate. While in mixed infection were 36 isolate (with Proteus 15, with Pseudomonas aerognosa 5, with Shighella 2, with Klebsillia 1, with Enterobacter 2, with Provedentia 2, with Shigella 8 and with Kl