| inclusion body hepatitis as a primary disease in broilers in saskatchewan, canada. | in recent years inclusion body hepatitis (ibh) has emerged as an economically important disease in western canada. historically, infections with infectious bursal disease virus (ibdv) and chicken anemia virus (cav) have been known to suppress the immune system of broilers and make them more susceptible to a secondary disease such as ibh. recently it has been reported that virulent adenoviruses are able to cause ibh as a primary disease in broilers without apparent involvement of ibdv and cav. th ... | 2006 | 17274293 |
| genotyping of canadian isolates of fowl adenoviruses. | five hundred and seventy-three clinical submissions with fowl adenovirus (fadv) involvement were examined to investigate the association of different types of fadv with clinical problems related to fadv infection. samples were received from 2000 to 2006 and originated from seven canadian provinces. four hundred and eighty-seven submissions were inclusion body hepatitis (ibh) related, while 86 were not ibh related. viruses isolated from 287 samples were further analysed by hexon gene loop 1 seque ... | 2008 | 18202956 |
| application of high-resolution melting curve analysis for typing of fowl adenoviruses in field cases of inclusion body hepatitis. | fowl adenoviruses (fadvs) cause inclusion body hepatitis (ibh) in chickens. in this study, clinical cases of ibh from australian broiler flocks were screened for the presence and genotype of fadvs. | 2011 | 21495991 |
| flock prevalence of exposure to avian adeno-associated virus, chicken anemia virus, fowl adenovirus, and infectious bursal disease virus among ontario broiler chicken flocks. | samples from 231 randomly selected commercial broiler chicken flocks in ontario were tested at slaughter for exposure to chicken anemia virus (cav), fowl adenovirus (fadv), and infectious bursal disease virus (ibdv). fifteen blood samples per flock were collected and analyzed for the presence of antibodies against cav, fadv, and ibdv by elisa or agar gel immunodiffusion test. fifteen cecal tonsils and cloacal swabs per flock were analyzed for the presence of cav, fadv, and ibdv by pcr. the preva ... | 2014 | 24758116 |
| chronological analysis of gross and histological lesions induced by field strains of fowl adenovirus serotypes 1, 8b and 11 in one-day-old chickens. | fowl adenoviruses (fadvs) cause diseases in domestic chickens, including inclusion body hepatitis (ibh), with immunosuppression believed to play a role in their pathogenesis. to gain a better understanding of the pathogenesis and chronology of disease caused by fadvs, the gross pathology, histopathology and dissemination of virus were examined at several different time points, after inoculation of one-day-old specific pathogen-free chickens with fadv-1, fadv-8b or fadv-11 via the ocular route. f ... | 2015 | 25609454 |
| inclusion body hepatitis associated with an outbreak of fowl adenovirus type 2 and type 8b in broiler flocks in south africa. | inclusion body hepatitis is an acute disease of chickens ascribed to viruses of the genus aviadenovirus and referred to as fowl adenovirus (fadv). there are 12 fadv types (fadv1to fadv8a and fadv8b to fadv11), classified into five species based on their genotype (designated fadva to fadve). a total of 218 000 chickens, 2-29 days of age, were affected over a 1-year period, all testing positive by microscopy, virus isolation and confirmation with polymerase chain reaction (pcr). affected birds wer ... | 2014 | 27476509 |
| complete genome sequence of a non-pathogenic strain of fowl adenovirus serotype 11: minimal genomic differences between pathogenic and non-pathogenic viruses. | in this study, we conducted the clinicopathological characterization of a non-pathogenic fadv-d serotype 11 strain mx95, isolated from healthy chickens, and its entire genome was sequenced. experiments in spf chickens revealed that the strain is a non-pathogenic virus that did not cause death at challenge doses of 1×10(6) tcid50. additionally, the infection in spf chickens caused no apparent damage in most of the organs analyzed by necropsy and histopathology, but it did cause inclusion body hep ... | 2017 | 27865971 |
| molecular characterization of pathogenic and nonpathogenic fowl aviadenovirus serotype 11 isolates. | fowl aviadenoviruses, many of which are of importance in veterinary medicine, are classified into 5 species. in this study, a pathogenic isolate and a nonpathogenic isolate of fowl aviadenovirus serotype 11 (fadv-11) of species fowl aviadenovirus d were characterized. growth rates were analyzed for the 2 isolates, showing notable differences. the complete genomic sequences of the viruses were fully determined and were analyzed. the genomes of the 2 isolates showed 98.1% sequence identity and rev ... | 2016 | 27781484 |
| comparison of fiber gene sequences of inclusion body hepatitis (ibh) and non-ibh strains of serotype 8 and 11 fowl adenoviruses. | fowl adenoviruses (fadvs) are common in broiler operations, and the most frequently isolated fadvs belong to serotypes 1, 8, and 11. serotype 1 viruses are considered nonpathogenic. while some serotype 8 and 11 viruses cause inclusion body hepatitis (ibh), these virus serotypes can also be isolated from non-ibh cases. the fiber protein is one of the major constituents of the adenoviral capsid, involved in virus entry, and it has been implicated in the variation of virulence of fadvs. the fiber g ... | 2014 | 24142408 |
| the first complete genome sequence and pathogenicity characterization of fowl adenovirus 11 from chickens with inclusion body hepatitis in pakistan. | inclusion body hepatitis (ibh), hydropericardium syndrome, and gizzard erosion associated with fowl adenovirus (fadv) infections are reported globally and resulted in significant poultry industry economic losses. in 2018, severe ibh appeared in pakistan in a 17-week-old layer flock. subsequently, a fadv-11 strain (designated as pkfad18) was isolated from liver samples and identified based on phylogenetic analyses of the serotype-specific l1 region of the capsid hexon gene. there is no complete g ... | 2020 | 32402334 |
| molecular typing and pathogenicity assessment of fowl adenovirus associated with inclusion body hepatitis in chicken from india. | recently, inclusion body hepatitis (ibh) outbreaks have been increasingly reported in different regions of india, particularly in broiler flocks. the present study was undertaken to characterize fowl adenovirus associated with ibh in chicken and assessment of its pathogenicity. liver samples were collected from fowl adenovirus (fadv) suspected 100 commercial broiler and six broiler breeder flocks from eleven different states of india from 2016 to 2019. all the samples were subjected to 897-bp fa ... | 2021 | 34308515 |