Key result
Group D rotavirus was detected in 3.6% (4 of 111) of intestinal content pools from Brazilian poultry farms using a specific RVD RT-PCR targeting the VP6 gene.
Cross-Sectional (n=111)
Yes
The study confirms the presence and conserved nature of Group D rotavirus in Brazilian poultry farms.
Low-level detection supports continued avian surveillance; leaves open pathogenicity and economic impact in commercial poultry.
Rotaviruses are etiological agents of diarrhea both in humans and in several animal species. Data on avian Group D rotaviruses (RVD) are scarce, especially in Brazil. We detected RVD in 4 pools of intestinal contents of broilers, layer and broiler breeders out of a total of 111 pools from 8 Brazilian states, representing an occurrence of 3.6%, by a specific RVD RT-PCR targeting the VP6 gene. Phylogenetic tree confirmed that the Brazilian strains belong to group D and 3 of the sequences were identical in terms of amino acid whereas one showed 99.5% identity with the others. The sequences described in this study are similar to other sequences previously detected in Brazil, confirming the conserved nature of the VP6 protein.
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Beserra et al. (2015) conducted a cross-sectional in Group D rotavirus infection (n=111). RVD RT-PCR targeting the VP6 gene was evaluated on Occurrence of Group D rotavirus (RVD). Group D rotavirus was detected in 3.6% (4 of 111) of intestinal content pools from Brazilian poultry farms using a specific RVD RT-PCR targeting the VP6 gene.
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