Some virulence factors of Escherichia coli isolated from diarrheic calves
Journal Title: UNKNOWN - Year 2018, Vol 25, Issue 1
Abstract
Escherichia coliare the most common cause of diarrhea in calves. Diarrhea in calvesremains one of the most important problems faced by livestock, causing great economic losses. Some strains ofE. coli characterized by the presence of specific virulence factors including haemolysin production, resistance to bactericidal effects of serum and Congo red binding activity. In this studyfecal samples were collected from 115 diarrheic calves aged from 3 days to one year and from different localities in Egypt along the period from February to August 2015.The prevalence of E. coli in diarrheic calves was 72.2%. 39.8% of isolated E. coli were haemolytic to sheep blood agar, 68.7% were serum resistant, 100% showed Congo red binding activity.
Authors and Affiliations
Ghada Sayed Ibrahim, Walid H. Hassan, Ragab Azzam and Abeer Ahmed El -Sayed Shehata Research Assistant Department of Microbiology, Animal Health Research Institute Beni-Suef Laboratory Professor of Bacteriology, Mycology and Immunology - Faculty of Veterinary Medicine, Beni-Suef University Professor of Infectious Diseases - Faculty of Veterinary Medicine, Beni-Suef University Senior Researcher - Department of Bacteriology, Animal Health Research Institute El_Fayoum Laboratory
Keywords
Related Articles
- EP ID EP103173
- DOI 10.21608/jvmr.2018.43305
- Views 140
- Downloads 0
Characterization of autofluorescence in normal and necrosed muscles in chickens
The histopathological diagnosis of muscle necrosis and hyalinosis frequently poses considerable difficulty and has a contradictory diagnosis. The present study described the morphologic features of nine clinically affe...
Preparation of inactivated canine distemper vaccine using different inactivators
Development of environmental, safe and protective vaccines against infectious pathogens remains a challenge. In consequence of its high morbidity and mortality rates canine distemper is one of the most important diseas...
Effect of parity on the peripartum hypocalcaemia In dairy cows under Egyptian conditions
A total of 30 dairy cows were attended in veterinary practice investigations have been done under Egyptian conditions, in Seds farm belong to animal production research institute , from the reproductive perspective . t...
Morphological characteristics of the oviduct in Egyptian Balady Duck (Anas boschas domesticus) during laying cycle.
The objective of the current study was to present baseline data on the morphology and surface architecture of the oviduct in adult female Balady duck grossly and by using scanning electron microscope (SEM). Fifteen app...
Clinical evaluation of epidural bupivacaine, butorphanol, and butorphanol - bupivacaine combination in goat
Butorphanol is a synthetic opioid commonly used for epidural anesthesia in human either alone or in combination with bupivacaine but not in goat. The objective of the present study was to evaluate the analgesic effect...