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Detection and Phylogeny of Fowl Adenovirus Associated with Hydropericardium Hepatitis Syndrome in Broilers

Detection and Phylogeny of Fowl Adenovirus Associated with Hydropericardium Hepatitis Syndrome in Broilers

Nida Zia1, *, Ayesha Maqbool2, Muhammad Safdar3, Umm-I-Habiba1, Altaf Mehmood4, Muhammad Usman5, Zahid Iqbal6, Javed Iqbal6, Shahid Mehmood6, Amanullah Khan7 and Sajid Umar8

1 Department of Biology, Virtual University, Lahore
2 Department of molecular Biology, Virtual University of Pakistan
3Department of Breeding and Genetics, Cholistan University of Veterinary and Animal Sciences, Bahawalpur
4Punjab Livestock & Dairy Development Department, Chakwal
5Poultry Research Ä°nstitute, Rawalpindi
6Research wing, Livestock and Dairy Development Department, Punjab
7 Department of Microbiology, Friedrich Loeffler Institute Jena, Germany
8Department of Pathology, PMAS Arid Agriculture University, Rawalpindi

*  Corresponding author: nidazia29@gmail.com

 

ABSTRACT

Hydropericardium hepatitis syndrome (HHS) in broilers is an emerging threat, causing huge economic loss to poultry industry every year. Fowl adenoviruses (FAdVs) associated with HHS could disturb growth, viability and immunity in commercial broilers. The main aim of the present study was to detect and characterize FAdVs. Liver tissues were collected from poultry flocks showing clinical signs of HHS and investigated using PCR assay for FAdVs. The FAdVs were detected in 8 samples collected from different flocks. Positive PCR amplicons were sequenced to genetically identify the FAdVs. Phylogenetic analysis revealed two distinct clusters among FAdVs. One cluster containing 3 strains belonged to the FAdV- C species and serotyped as FAdV-4 and showed close proximity at the nucleotide level. The other cluster containing three strains belonged to the FAdV-D species and serotyped as FAdV-11. Furthermore, the sequencing analysis of detected field strains revealed the high similarity and close clustering with FAdV-4 and FAdV-11 strains isolated from neighboring countries, suggesting geographic and temporal relationships among these strains. This evidence emphasizes the need of further detailed and more systemic approaches to evaluate FAdVs diffusion and characterization to design effective control strategies. 
 

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Pakistan Journal of Zoology

October

Vol. 51, Iss. 5, Pages 1599-1997

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