Beak and feather disease virus infection in cockatiels (<i>Nymphicus hollandicus</i>)

Shearer, Patrick; Bonne, Nicolai; Clark, P.; Sharp, Margaret; Raidal, Shane R.

doi:10.1080/03079450701802206

Cited by 38 publications

(32 citation statements)

References 24 publications

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“…BFDV DNA was detected in a symptomatic Blue-and-Yellow macaw (Table 2). Although there are few reports available on the incidence of BFDV in Brazil, the virus has been described in other continents (Pass & Perry, 1984;Shearer et al, 2008). In our study, swab and blood samples were collected at arrival of the birds at the triage centers, avoiding contact with resident birds.…”

Section: Molecular Diagnosis Of Beak and Feather Disease In Native Brmentioning

confidence: 99%

“…present lower incidence of the disease compared with Old World species (Eclectus sp., Agapornis sp.) (Shearer et al, 2008;Piçarra, 2009). Although BFDV was detected in Amazona aestiva individuals in the present study, the birds were asymptomatic, in agreement with a previous report (Piçarra, 2009).…”

Section: Molecular Diagnosis Of Beak and Feather Disease In Native Brmentioning

confidence: 99%

“…The chronic form results in progressive feather loss (alopecia), beak deformation, and predisposition to opportunistic infections (Pass and Perry, 1984). All psittacines may be susceptible, despite the morbidity differences possibly associated with host species and virus strains, and in Australia, PBFD is considered partially responsible for the successful predation of affected birds (Shearer et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Molecular Diagnosis of Beak and Feather Disease in Native Brazilian Psittacines

Araújo

Andery

Ferreira

et al. 2015

Rev. Bras. Cienc. Avic.

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The incidence of the psittacine beak and feather disease virus (BFDV) was investigated in Brazilian native parrots with normal feathering arriving at rescue and triage centers for wild animals (CETAS, IBAMA) in the state of Minas Gerais, Brazil. BFDV DNA was investigated by previously described PCR technique for the partial amplification of BFDV ORF-1 in DNA extracts from blood, cloacal swab or liver of psittacines. Some birds provided more than one sample. Nine species of psittacines were sampled between January 2009 and October 2010. Blood (n=46) or cloacal swab (n=128) samples were obtained from psittacines immediately upon arrival at the triage centers. Liver samples were collected from necropsied birds dead on arrival (n=167). All swab samples were negative, except for one Ara ararauna individual (n=3) which blood presented the BFDV DNA. On the other hand, 11 liver samples were positive for BFDV DNA, with a prevalence of 7.8% in Amazona aestiva (n=140). No BFDV DNA was detected in the liver of Amazona amazonica (n=11), A. vinacea (n=5), A. rhodochorytha (n=4), Anodorhynchus hyacinthinus (n=3), Ara ararauna, (n=3), Aratinga leucophtalma (n=2), Guarouba guarouba (n=1) and Pionus maximiliani (n=1). In most cases, alopecia was not associated with BFDV detection in liver, and liver histopathology was inconclusive. Although all cloacal swab samples were negative, a few psittacines (n=19) that died at CETAS-Belo Horizonte were retested, and 21% were detected as positive in liver. A group of psittacines (n=16) was clinically evaluated, and despite showing feather dystrophy, all birds were negative in the cloacal swabs, except for one, which blood sample was positive (A. ararauna). The obtained sequences of the BFDV strains BH 215 and BH 732 were deposited in the GenBank (JQ649409 and JQ649410). A 98% similarity with strain sequences described in Australia, Japan, and New Zealand was observed. It is possible that these strains arrived in Brazil through the legal and illegal trade of parrots. However, it was not possible to associate BFDV infection with the geographical origin of birds and no local marker was detected. The rates of detection, although similar to other studies, indicate the tendency of a high incidence of the disease, possibly associated with stress, and high bird density and wide transmission in captivity conditions.

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Section: Molecular Diagnosis Of Beak and Feather Disease In Native Brmentioning

confidence: 99%

Section: Molecular Diagnosis Of Beak and Feather Disease In Native Brmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Molecular Diagnosis of Beak and Feather Disease in Native Brazilian Psittacines

Araújo

Andery

Ferreira

et al. 2015

Rev. Bras. Cienc. Avic.

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show abstract

“…Additionally, cross-reactivity work 7 using sera from rainbow lorikeets, short-billed corellas, a sulphur-crested 8 cockatoo, a red lory (Eos bornea) and a galah-corella hybrid and virus from 9 rainbow lorikeets, a red lory, two swift parrots (Lathamus discolor), a sulphur-10 crested cockatoo and a scarlet-chested parrot (Neophema splendida) failed to 11 find evidence of antigenic serotypes (Khalesi et al, 2005). However, a similar 12 experiment using sera from the above birds and virus eluted from the feather 13 of a cockatiel found that sera from some of the birds did not inhibit 14 agglutination by the cockatiel isolate, suggesting that the cockatiel isolate may 15 be sufficiently different antigenically to be considered a separate serotype 16 (Shearer et al, 2008a). 17…”

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confidence: 99%

“…In total, 160 samples 7 were thus collected. In addition, samples from 82 cockatiels known to be HI 8 negative (Shearer et al, 2008a) were included to evaluate the diagnostic 9 specificity of the test. Samples included both dried blood on filter paper and 10…”

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confidence: 99%