A análise filogenética de FAdV com base em parte da sequência do gene que codifica a proteína hexon revelou identidade com a espécie E, que se tornou disseminada em vários países. Os embriões inoculados tiveram óbito de 30% em até sete dias após a inoculação e alterações hepáticas por fígados esverdeados e aumentados.
Todas as aves acometidas e embriões inoculados foram positivos para FAdV e CAV. Fígado e timo foram coletados para isolamento do vírus em embriões de galinhas SPF, PCR e histopatologia. Foram avaliados machos reprodutores de corte com três semanas de idade, com medula óssea pálida, fígado aumentado e amarelado e esplenomegalia, timo atrofiado e um com hidropericárdio. Objetiva-se descrever um surto de SHH em matrizes de frangos corte, caracterizar a estirpe de FAdV envolvida e destacar a coinfecção com CAV. Desde a década de 1990, vários surtos de SHH foram descritos em todas as áreas de produção de aves, incluindo na América do Sul, e a coinfecção entre FAdV e vírus da anemia das galinhas (CAV) pode ser agravante para todos os aspectos da SHH. RESUMO: Adenovírus aviário (FAdV) é um importante patógeno na indústria avícola global e a etiologia da síndrome da hepatite por corpúsculo de inclusão-hidropericárdio (SHH) em galinhas. The CAV-impaired adaptive immunity may have benefited the FAdV infection. In this episode, the failure on biosecurity may have enabled challenge with both FAdV and CAV, with pathological synergism. Within the last decade, a worldwide upsurge of HHS in broiler breeders owing to failed biosecurity has occurred. The association of FAdV with CAV in breeders is of further concern due to both being capable of vertical transmission. The E species has recently become a relevant species in several countries. Phylogenetic analysis of the FAdV isolate hexon gene partial sequence enabled grouping with E species. The inoculated embryos had enlarged, greenish and hemorrhagic livers, and 30% died within 7 days of inoculation.
All affected chickens and inoculated embryos were positive for FAdV and CAV. Tissues of the naturally infected chickens and the inoculated embryos were evaluated by PCR and histopathology. Virus isolation was performed in SPF chicken embryos of liver and thymus. The three-week-old male broiler breeders had pale bone marrow, enlarged and yellowish liver, splenomegaly, and atrophied thymus one chicken was also found with hydropericardium. This study describes an outbreak of HHS in coinfection with CAV in industrial broiler breeders and characterizes the FAdV isolate. The coinfection of FAdV and chicken anemia virus (CAV) may markedly impact the incidence of HHS. Since the 1990s, several outbreaks of HHS have occurred in poultry producing areas, including South America. Taxes, fees not included for deals content.ABSTRACT: Fowl aviadenovirus (FAdV) is an important pathogen in the global poultry industry and the etiology of inclusion body hepatitis-hydropericardium syndrome (HHS) in chickens. If you have any questions or suggestions regarding this matter, you are welcome to contact our customer support team.īusinessYab is not a booking agent, and does not charge any service fees to users of our site.īusinessYab is not responsible for content on external web sites. The brand names, logos, images and texts are the property of these third parties and their respective owners. BusinessYab cannot be held responsible or liable for the accuracy, correctness, usefulness or reliability of the data. The content displayed in the BusinessYab Directory consists of information from third parties, among others from publicly accessible sources, or from customers, who have a presentation page in our directory. © 2022 All Rights reserved.Īt BusinessYab our purpose is to help people find great local businesses like dentists, hair stylists, restaurants, bars, hotels, local businesses.
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