الفهرس 
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Abstract
Therefore, the aim of the work is to assess the vaJue of using biotechnology in rapid detection of Cperfringens toxins, evaluate the role of Cperfringens toxins in laboratory animal diseases and to determine the incidence of Cperfringens in laboratory animal. One hundred and twenty four (124) isolates of C.Perfringens recovered from 16 apparently normal rats, 15 from apparently normal rabbits, 26 from diseased rats, 27 from diseased rabbits, 12 from water and 28 from pellets offered to studied animals, were bacteriologically identified and typed. The isolates were 68 of type A, 28 of type D and 28 were non toxigenic isolates. The highest percentage of isolates (62.9 %) could be isolated from diseased rabbits. Typing of Clostridium perfringens isolates from apparently healthy and diseased rats and rabbits and water and pellets offered to these studied animals out of 96 positive samples 68 samples type A by percentage 52.5 % while 28 samples type D by percentage 22.1 % , finally non toxigenic isolates 28 by percentage 25.4 %.