A unique isolate of beak and feather disease virus isolated from budgerigars (Melopsittacus undulatus) in South Africa

2010 ◽  
Vol 155 (3) ◽  
pp. 435-439 ◽  
Author(s):  
Arvind Varsani ◽  
Gillian K. de Villiers ◽  
Guy L. Regnard ◽  
Robert R. Bragg ◽  
Kulsum Kondiah ◽  
...  
Keyword(s):  
South Africa ◽  
Disease Virus ◽  
Melopsittacus Undulatus ◽  
Feather Disease Virus

Review of documented beak and feather disease virus cases in wild Cape parrots in South Africa during the last 20 years

2015 ◽  
Vol 156 (4) ◽  
pp. 867-875 ◽  
Author(s):  
Colleen T. Downs ◽  
Mark Brown ◽  
Lorinda Hart ◽  
Craig T. Symes
Keyword(s):  
South Africa ◽  
Disease Virus ◽  
Feather Disease Virus

scholarly journals Psittacine beak and feather disease virus in budgerigars and ring-neck parakeets in South Africa

2004 ◽  
Vol 71 (1) ◽  
Author(s):  
J. Albertyn ◽  
K.M. Tajbhai ◽  
R.R. Bragg
Keyword(s):  
South Africa ◽  
Polymerase Chain Reaction ◽  
Genetic Variation ◽  
Disease Virus ◽  
Common Disease ◽  
Sample Collection ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Feather Disease Virus ◽  
Viral Isolates

Psittacine beak and feather disease (PBFD) is a common disease of the psittacine species and is caused by the psittacine beak and feather disease virus (PBFDV). In this study the occurrence of the disease in ring-neck parakeets and budgerigars in South Africa suffering from feathering problems, using polymerase chain reaction as a diagnostic test was investigated. The genetic variation between viral isolates was also studied. Results indicate that PBFDV can be attributed to being the cause of feathering problems in some of the ring-neck parakeets and budgerigars in South Africa. Genetic variation of isolates occurs between species and individuals. A cheap and easy to use method of blood sample collection on filter paper for diagnostic purposes was also evaluated. It proved to be less stressful to the birds and did not inhibit further processes.

scholarly journals Beak and feather disease virus haemagglutinating activity using erythrocytes from African Grey parrots and Brown-headed parrots : research communication

2005 ◽  
Vol 72 (3) ◽  
Author(s):  
K. Kondiah ◽  
J. Albertyn ◽  
R.R. Bragg
Keyword(s):  
South Africa ◽  
Disease Virus ◽  
Causative Agent ◽  
Haemagglutination Inhibition ◽  
Clinical Signs ◽  
Viral Disease ◽  
Dna Virus ◽  
Haemagglutinating Activity ◽  
Feather Disease Virus ◽  
Positive Results

Psittacine beak and feather disease (PBFD) is a common viral disease of wild and captive psittacine birds characterized by symmetric feather loss and beak deformities. The causative agent, beak and feather disease virus (BFDV), is a small, circular single-stranded DNA virus that belongs to the genus Circovirus. BFDV can be detected by PCR or the use of haemagglutination (HA) and haemagglutination inhibition (HI) assays that detect antigen and antibodies respectively. Erythrocytes from a limited number of psittacine species of Australian origin can be used in these tests. In South Africa, the high cost of these birds makes them difficult to obtain for experimental purposes. Investigation into the use of erythrocytes from African Grey parrots and Brown-headed parrots yielded positive results showing the haemagglutinating activity of their erythrocytes with purified BFDV obtained from confirmed clinical cases of the disease. The HA activity was further confirmed by the demonstration of HI using BFDV antiserum from three different African Grey parrots previously exposed to the virus and not showing clinical signs of the disease.

Beak and feather disease virus: correlation between viral load and clinical signs in wild Cape parrots (Poicepahlus robustus) in South Africa

2014 ◽  
Vol 160 (1) ◽  
pp. 339-344 ◽  
Author(s):  
Guy L. Regnard ◽  
Rutledge S. Boyes ◽  
Rowan O. Martin ◽  
Inga I. Hitzeroth ◽  
Edward P. Rybicki
Keyword(s):  
South Africa ◽  
Viral Load ◽  
Disease Virus ◽  
Clinical Signs ◽  
Feather Disease Virus

A novel genotype of beak and feather disease virus in budgerigars (Melopsittacus undulatus)

Virus Genes ◽  
2010 ◽  
Vol 41 (2) ◽  
pp. 231-235 ◽  
Author(s):  
Hirohito Ogawa ◽  
Hiroshi Katoh ◽  
Naoko Sanada ◽  
Yasuyuki Sanada ◽  
Kenji Ohya ◽  
...  
Keyword(s):  
Disease Virus ◽  
Melopsittacus Undulatus ◽  
Novel Genotype ◽  
Feather Disease Virus

scholarly journals Experimental Inoculation of BFDV-Positive Budgerigars (Melopsittacus undulatus) with TwoMycobacterium aviumsubsp.aviumIsolates

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Aleksandra Ledwoń ◽  
Rafał Sapierzyński ◽  
Ewa Augustynowicz-Kopeć ◽  
Piotr Szeleszczuk ◽  
Marcin Kozak
Keyword(s):  
Disease Virus ◽  
Mycobacterium Avium ◽  
Infected Group ◽  
Control Group ◽  
Melopsittacus Undulatus ◽  
Pathological Changes ◽  
Internal Organs ◽  
Pavo Cristatus ◽  
Experimental Inoculation ◽  
Feather Disease Virus

Beak and feather disease virus- (BFDV-) positive (naturally infected) but clinically healthy budgerigars (Melopsittacus undulatus) were inoculated with two isolates ofMycobacterium aviumsubsp.aviumisolated from naturally infected golden pheasant (Chrysolophus pictus) and peafowl (Pavo cristatus). During a period of more than two months after inoculation, samples of cloacal and crop swabs, faeces, and blood were obtained for BFDV andMycobacterium aviumtesting with PCR. Birds were euthanized nine weeks after inoculation. All infected budgerigars developed signs typical of mycobacteriosis, but more advanced clinical and pathological changes were visible in the group infected with the pheasant isolate. Only a few cloacal and crop swab samples were positive forMycobacterium aviumsubsp.aviumdespite advanced pathological changes in the internal organs. In the groups infected with mycobacterium isolates the frequency of BFDV-positive samples was higher than in the control group. In the infected groups the frequency of BFDV was substantially higher in the cloacal swabs of birds inoculated with the pheasant isolate than in the peafowl-isolate-infected group.

scholarly journals Complete Genome Sequence of Genotype Psittacine Beak and Feather Disease Virus, a Strain Identified from Budgerigars in China

2019 ◽  
Vol 8 (20) ◽  
Author(s):  
Rujia Cheng ◽  
Yaqing Mao ◽  
Qiuchen Li ◽  
Shijie Xie ◽  
Yingju Xia ◽  
...  
Keyword(s):  
United States ◽  
South Africa ◽  
Disease Virus ◽  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
The United States ◽  
United States South ◽  
Feather Disease Virus

Psittacine beak and feather disease virus (PBFDV) has been reported in many countries, such as Australia, Poland, the United States, South Africa, etc. In this study, the complete genome of a PBFDV isolate was determined and characterized from budgerigars in China.

Genetic diversity of the Rep gene of beak and feather disease virus in South Africa

2006 ◽  
Vol 151 (12) ◽  
pp. 2539-2545 ◽  
Author(s):  
K. Kondiah ◽  
J. Albertyn ◽  
R. R. Bragg
Keyword(s):  
South Africa ◽  
Genetic Diversity ◽  
Disease Virus ◽  
Feather Disease Virus

scholarly journals Avian Polyomavirus Genome Sequences Recovered from Parrots in Captive Breeding Facilities in Poland

2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Anisha Dayaram ◽  
Tomasz Piasecki ◽  
Klaudia Chrząstek ◽  
Robyn White ◽  
Laurel Julian ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Disease Virus ◽  
Captive Breeding ◽  
Melopsittacus Undulatus ◽  
Genome Sequences ◽  
Psittacula Krameri ◽  
B Virus ◽  
Avian Polyomavirus ◽  
Feather Disease Virus

Eight genomes of avian polyomaviruses (APVs) were recovered and sequenced from deceased Psittacula eupatria , Psittacula krameri , and Melopsittacus undulatus from various breeding facilities in Poland. Of these APV-positive samples, six had previously tested positive for beak and feather disease virus (BFDV) and/or parrot hepatitis B virus (PHBV).

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