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- W2997184015 abstract "Undoubtedly, necrotic enteritis is identified as one of the most threatening diseases which face poultry industry in Egypt and need radical solution to avoid huge economic losses. The present work was designed for typing Clostridium perfringens isolated from diseased chickens suspected to have necrotic enteritis from different outbreaks in six Governorates in Egypt (Gharbia, Dakhalia, Sharkia, Ismailia, North Sinai and Kafr El Sheikh) during the period from August to December 2018. Intestine and liver samples were obtained from eighty six diseased broiler chickens representing 60 flocks. C. perfringens was isolated and toxigenicity of the recovered isolates was determined by Nagler's and dermonecrotic reactions. Furthermore, multiplex polymerase chain reaction (PCR) targeting alpha, beta, epsilon and iota toxins' genes was performed for result confirmation and typing of the toxigenic isolates. Sixty-six C.perfringens isolates (38.37%) were recovered from 172 intestine and liver samples and twenty isolates (30.3%) were toxigenic and typed as C. perfringens type A producing alpha toxin only. These findings established the fact that alpha toxin is the only main toxin of C. perfringens type A which is basically responsible for its pathogenicity and virulence. In addition, most of the positively toxigenic isolates were isolated from hepatic lesions (15 isolates) rather than intestinal lesion (5 isolates). In conclusion, alpha toxin is a major toxin for NE development in chickens. Genotyping of Clostridium perfringens by multiplex PCR is a useful adjunct to diagnosis of necrotic enteritis in chickens." @default.
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- W2997184015 date "2019-12-01" @default.
- W2997184015 modified "2023-10-17" @default.
- W2997184015 title "Clostridium perfringens type A Causing Necrotic Enteritis Outbreaks among Chickens in Egypt" @default.
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- W2997184015 doi "https://doi.org/10.21608/zvjz.2019.14139.1055" @default.
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