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Khormali, Mahmoud, Zahraei Salehi, Taghi, Nayeri Fasaei, Bahar, Nikbakht Brujeni, Gholamreza, Yahya Rayat, Ramak, Lotfollah Zadeh, Samad. (1404). Isolation and Molecular Identification of the ETEC Pathotype of Escherichia Coli from Calf Diarrhea in Some Area of Iran. , (), -. doi: 10.22059/ijvm.2024.381390.1005630
Mahmoud Khormali; Taghi Zahraei Salehi; Bahar Nayeri Fasaei; Gholamreza Nikbakht Brujeni; Ramak Yahya Rayat; Samad Lotfollah Zadeh. "Isolation and Molecular Identification of the ETEC Pathotype of Escherichia Coli from Calf Diarrhea in Some Area of Iran". , , , 1404, -. doi: 10.22059/ijvm.2024.381390.1005630
Khormali, Mahmoud, Zahraei Salehi, Taghi, Nayeri Fasaei, Bahar, Nikbakht Brujeni, Gholamreza, Yahya Rayat, Ramak, Lotfollah Zadeh, Samad. (1404). 'Isolation and Molecular Identification of the ETEC Pathotype of Escherichia Coli from Calf Diarrhea in Some Area of Iran', , (), pp. -. doi: 10.22059/ijvm.2024.381390.1005630
Khormali, Mahmoud, Zahraei Salehi, Taghi, Nayeri Fasaei, Bahar, Nikbakht Brujeni, Gholamreza, Yahya Rayat, Ramak, Lotfollah Zadeh, Samad. Isolation and Molecular Identification of the ETEC Pathotype of Escherichia Coli from Calf Diarrhea in Some Area of Iran. , 1404; (): -. doi: 10.22059/ijvm.2024.381390.1005630

Isolation and Molecular Identification of the ETEC Pathotype of Escherichia Coli from Calf Diarrhea in Some Area of Iran

Iranian Journal of Veterinary Medicine
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 15 اردیبهشت 1404
نوع مقاله: Original Articles
شناسه دیجیتال (DOI): 10.22059/ijvm.2024.381390.1005630
نویسندگان
Mahmoud Khormali1؛ Taghi Zahraei Salehi* 2؛ Bahar Nayeri Fasaei2؛ Gholamreza Nikbakht Brujeni2؛ Ramak Yahya Rayat2؛ Samad Lotfollah Zadeh3
1Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
2Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
3Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
چکیده
BACKGROUND: Calf diarrhea is a common cause of pre-weaning morbidity and mortality in cattle within livestock operations.
OBJECTIVES: The primary aims of our study were to determine the prevalence and occurrence rate of genes that encode virulence factors (virotypes) in Escherichia coli strains isolated from calves with diarrhea. METHODS: Rectal swabs were procured from 156 calves exhibiting diarrhea, encompassing 12 distinct dairy farms located across five provinces of Iran. Through PCR analysis, the E. coli isolates were evaluated for the presence of various virulence genes such as f4, f5, f41, f17, cfa/1, sta, and lt.

RESULTS: A total of 78.84 % isolates were found to be positive for at least one of the virulence genes. The highest frequency with 76.28% was related to sta virotype. Most of the isolates analyzed had a single gene, and no combination of fimbrial and enterotoxin gene was predominant.
CONCLUSIONS: These findings underscore the importance of monitoring and understanding the epidemiology of ETEC pathotypes in order to develop effective strategies for managing calf diarrhea and reducing associated economic losses in the cattle industry in Iran.
کلیدواژه‌ها
Calf diarrhea؛ Enterotoxigenic E. coli؛ Fimbriae؛ Iran؛ Toxin
آمار
تعداد مشاهده مقاله: 16





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