dissemination of some bacterial pathogens of fish in Egypt

A total of 100 fish [60 common carp, 24 Clarias lazera, 11 silver carp and 5 Tilapia nilotica] with apparent lesions were collected from Barseek Farm as well as from the Rossetta Branch of the River Nile at Edfina Village. Various microorganisms, such as A. hydrophila, Ps. fluorescens, Corynebacterium sp., C. albicans, E. tarda, Flavobacterium sp. and F. columnaris were isolated. Isolation of the organisms from different species as well as the predilection seat for each organism were discussed

contribution towards the virulence of candida species for chicken embryos

In this work C. albicans, C. tropicalis, C. krusei, C. parapsillosis and C. guilliermondi, were isolated and identified. Chicken embryos were used for studies of the virulence of C and ida species by inoculation in the yolk sac or on the chorioallantoic membrane. The above-mentioned C and ida species showed higher percentage of embryonic death and positive reteroculturing. The source of isolates had no effect on death rate whether yolk sac or chorioallantoic membrane routes were used, while the effect of routes on death rate was significant at [5% level] as shown from the statistical analysis of the obtained data

overlook of subclinical mastitis among buffaloes at Behera governorate

A total of 584 apparently normal milk samples were collected from 145 dairy buffalos from apparently healthy quarters. The incidence of subclinical cases, the relation between microbiological isolation and the most reliable field test for diagnosis, as well as the sensitivity of the causative microorganisms were studies. Applied field tests were Schalm, Frieso, modified white and Negretti. The most predominant microorganisms were staphylococci and streptococci, yeasts and moulds were also isolated

role of ticks in transmitting some pathogenic microorganisms

Ticks were collected from 90 cattle [57 dairy cows, 18 heifers and 15 bull calves] and examined for the isolation of pathogenic microorganisms, which could be transmitted to the infested animals. The isolated pathogenic bacteria were Corynebacterium renale and bovis, Proteus vulgaris and mirabilis, E. coli I, Salmonella bovis morbificans, Streptococcus bovis and faecium, Staphylococcus aureus and Pasteurella multocida. On the other h and, the isolated fungi were Aspergillus niger, flavus and fumigatus, Penicillium spp., Mucor spp. Rhizopus spp., Alternaria spp., Geotrichum spp., Cryptococcus and C and ida tropicalis

Micro-organisms isolated from the buffalo-cow genital tract in Behera province

ABST Genital tract mucous was aseptically collected from 56 buffalo-cows [37 postpartum and 19 with endometritis and pyometra]. The microbial flora was isolated and identified. The microbial species and the incidence of each organism were tabulated and discussed