The survey on the circulation of Marek’s disease virus in local chickens in Tra Vinh province, Vietnam https://doi.org/10.12982/VIS.2024.055

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Published: Jan 11, 2024
Keywords:
Marek’s disease Meq gene Local chickens Tra Vinh province

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Huynh Ngoc Trang
Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Vietnam
Nguyen Le Hung Phong
Master student, Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Vietnam
Nguyen Tran Phuoc Chien
Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Vietnam
Ho Thi Viet Thu
Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Vietnam

Abstract

The study was conducted to determine the circulation of Marek’s disease virus in local chickens in Tra Vinh province. A total of 343 feather follicle samples were collected from 49 unvaccinated chicken flocks for Marek disease in Tra Vinh City, Cang Long, Tra Cu, and Tieu Can districts. The samples were tested by polymerase chain reaction to detect specific meq gene of Marek’s disease virus serotype 1 (MDV-1). Information on hygiene and vaccination programs was also collected. The results showed that 45 out of 343 samples were positive for MDV-1, accounting for 13.12%. The prevalent MDV-1 in chickens in Cang Long was 17.85%, followed by Tra Vinh City (15.38%). The same prevalence of MDV-1 (9.52%) was recorded in chickens in the Tieu Can and Tra Cu districts. The differences in the prevalence of MDV-1 in chickens among surveyed sites were not statistically significant (P>0.05). There was no significant difference in the prevalence of MDV-1 by chicken breeds. The prevalence of MDV-1 in chickens from 3 to 6 months old was highest at 34.04%, followed by chickens from 1 to less than 3 months old (11.06%) and older 6 months of age (5.71%). The risk of MDV -1 infection in vaccinated chickens against Avian influenza, Newcastle disease and Gumboro disease was lower than that of unvaccinated chickens (OR=0.277, P=0.044). The combination of sanitation and disinfection decreased the risk of MDV-1 infection in chickens (OR=0.502;P=0.031).

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How to Cite
Huynh Ngoc Trang, Nguyen Le Hung Phong, Nguyen Tran Phuoc Chien, & Ho Thi Viet Thu. (2024). The survey on the circulation of Marek’s disease virus in local chickens in Tra Vinh province, Vietnam: https://doi.org/10.12982/VIS.2024.055. Veterinary Integrative Sciences, 22(3), 823–830. Retrieved from https://he02.tci-thaijo.org/index.php/vis/article/view/267260
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Vol. 22 No. 3 (2024): September-December
Section
Research Articles
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