Serological and virological studies of Newcastle disease and avian influenza in slaughter-age ostriches (Struthio camelus) in Japan.
Serum samples from 191 ostriches (Struthio camelus) in Japan were tested for antibodies to Newcastle disease virus (NDV) and avian influenza virus (AIV). Twenty-two (12%) contained NDV-specific neutralizing antibodies by a virus-neutralization (VN) test without vaccination. Antibodies to AIV were not detected in the any sera by an agar gel precipitation test. Seven serum samples that had vaccinated with live NDV by eye drop were all positive by the VN test at 1 month post vaccination. A haemagglutination inhibition (HI) test for NDV seemed not to be suitable for ostriches because of non-specific agglutination of chicken red blood cells. No haemagglutinating viruses were isolated. This is the first report on detection of antibodies against NDV in ostriches in Japan.
Sakai
Kouji
K
Laboratory of Zoonoses, School of Veterinary Medicine and Animal Sciences, Kitasato University, Aomori, Japan.
Yada
Kaori
K
Sakabe
Genki
G
Tani
Orie
O
Miyaji
Kazuki
K
Nakamura
Masayuki
M
Takehara
Kazuaki
K
D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D002642:Chick Embryo; D004196:Disease Outbreaks / Q000662:veterinary; D006385:Hemagglutination Inhibition Tests / Q000662:veterinary; D009980:Influenza A virus / Q000276:immunology*; D005585:Influenza in Birds / Q000453:epidemiology* / Q000821:virology; D007564:Japan / Q000453:epidemiology; D009500:Neutralization Tests / Q000662:veterinary; D009521:Newcastle Disease / Q000453:epidemiology* / Q000821:virology; D009522:Newcastle disease virus / Q000276:immunology*; D011233:Precipitin Tests / Q000662:veterinary; D016036:Seroepidemiologic Studies; D020310:Struthioniformes / Q000821:virology*
D000914:Antibodies, Viral