Original Research

Sequence and phylogenetic analysis of chicken anaemia virus obtained from backyard and commercial chickens in Nigeria : research communication

D.O. Oluwayelu, D. Todd, O.D. Olaleye
Onderstepoort Journal of Veterinary Research | Vol 75, No 4 | a111 | DOI: https://doi.org/10.4102/ojvr.v75i4.111 | © 2008 D.O. Oluwayelu, D. Todd, O.D. Olaleye | This work is licensed under CC Attribution 4.0
Submitted: 10 September 2008 | Published: 10 September 2008

About the author(s)

D.O. Oluwayelu,
D. Todd,
O.D. Olaleye,

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This work reports the first molecular analysis study of chicken anaemia virus (CAV) in backyard chickens in Africa using molecular cloning and sequence analysis to characterize CAV strains obtained from commercial chickens and Nigerian backyard chickens. Partial VP1 gene sequences were determined for three CAVs from commercial chickens and for six CAV variants present in samples from a backyard chicken. Multiple alignment analysis revealed that the 6 % and 4 % nucleotide diversity obtained respectively for the commercial and backyard chicken strains translated to only 2 % amino acid diversity for each breed. Overall, the amino acid composition of Nigerian CAVs was found to be highly conserved. Since the partial VP1 gene sequence of two backyard chicken cloned CAV strains (NGR/Cl-8 and NGR/Cl-9) were almost identical and evolutionarily closely related to the commercial chicken strains NGR-1, and NGR-4 and NGR-5, respectively, we concluded that CAV infections had crossed the farm boundary.


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Crossref Citations

1. A Review of Pathogen Transmission at the Backyard Chicken–Wild Bird Interface
Andrea J. Ayala, Michael J. Yabsley, Sonia M. Hernandez
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doi: 10.3389/fvets.2020.539925