Psittacine beak and feather disease virus in budgerigars and ring-neck parakeets in South Africa
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 T-Shirt (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