الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
Salmonellosis is one of the most common Zoonotic infections. The most important source for Salmonella infection is carriers of organisms without outward signs.
A total of 945 internal organs were collected from slaughtered sheep (675) and goats (270) and also 450 rectal swabs from apparently healthy sheep (330) and goats (120). These samples were collected from different localities in El- Minia Governorate.
All samples collected were subjected to bacteriological and serological examination for isolation and identification of Salmonella species.
In the present investigation found that the prevalence rate of Salmonella isolates was 5.5% and 2.4% from slaughtered and apparently healthy sheep respectively.
Meanwhile the incidence of isolated Salmonella was 5.6% and 2.5% from slaughtered and apparently healthy goats respectively.
Identification the isolates revealed that the prevalence of Salmonella serotypes which isolated from the internal organs of slaughtered sheep was [liver (4.9%), gall bladder (0.4%), lung (0.4%) and feces (2.4%)]. Meanwhile the prevalence rate of Salmonella serotypes which isolated from the internal organs of slaughtered goats was [liver (4.4%), gall bladder (0.0%), lung (1.1%) and feces (2.5%)].
Comparing the different sites of sampling it was revealed that the liver was the most predilection site for Salmonella.
Serotyping of 29 isolated Salmonella revealed 5 different Salmonella serotypes from sheep and goats.
Salmonella Typhimurium was the most prevalent serovar in both sheep and goats followed by Salmonella Dublin and Salmonella Enteritidis but Salmonella Meleagridis and Salmonella Cerro has been found in a low incidence.
In this present work anti microbial drug sensitivity were determined using disc diffusion method which indicated that approximately all Salmonella isolates were highly sensitive to rifampicin, ofloxacin and gentamycin (100%).
Studding the pathogenicity of the common isolates Salmonella Typhimurium by experimental infection to healthy mice by I/P and oral route and recording the clinical signs, mortality rate and post mortem finding. After death occurred of infected mice re-isolation of infected micro organism from the post-mortem lesions of died mice post infection.