Results 161 to 170 of about 8,844 (204)

Avian infectious bronchitis virus in Africa: a review [PDF]

open access: yesVeterinary Quarterly, 2016
Infectious bronchitis virus (IBV) is worldwide in distribution, highly infectious, and extremely difficult to control because it has extensive genetic diversity, a short generation time, and a high mutation rate. IBV is a Gammacoronavirus, single-stranded, and positive-sense RNA virus.
Khadija khataby, Siham Fellahi
exaly   +3 more sources

Intracloacal infection with avian infectious bronchitis virus

Avian Pathology, 1998
An infectious bronchitis virus (IBV) strain HS-91 isolated from kidneys of chicks which died of nephrosis was inoculated via the cloaca of specific pathogen-free (SPF) chicks. These chicks showed more severe clinical signs, grosser kidney lesions and higher mortality than chicks inoculated with the same IBV strain via the trachea.
T, Uenaka   +6 more
openaire   +2 more sources

Studies of Avian Urolithiasis Associated with an Infectious Bronchitis Virus

Avian Diseases, 1987
Avian urolithiasis syndrome was diagnosed in 14-to-25-week-old chickens from a multiple-age caged-layer complex housing more than 2.5 million chickens. Losses from this syndrome ranged from 0.5 to 1.0% per week. Seven-to-14-week-old pullets from this facility had multifocal renal tubular necrosis leading to interstitial fibrosis, tophus formation, and ...
T P, Brown   +4 more
openaire   +2 more sources

Induction of chicken interferon by avian infectious bronchitis virus

Research in Veterinary Science, 1978
The ability of nine strains of avian infectious bronchitis virus (IBV) to induce chicken interferon has been investigated using Semliki Forest virus for the tests. The Beaudette, H120 and Connecticut 46 strains induced interferon in the allantoic fluids of embryonated hens' eggs, the highest titre (1 : 30) being associated with Beaudette; but these as ...
H C, Holmes, J H, Darbyshire
openaire   +2 more sources

Studies on the Structure of a Coronavirus-Avian Infectious Bronchitis Virus

Journal of General Virology, 1977
When avian infectious bronchitis virus (IBV) is fixed in formaldehyde, negative stain is able to penetrate the particle and an internal component is visualized. This component is seen as a tongue or flask shaped structure attached at one point to the outer virus membrane.
R W, Bingham, J D, Almeida
openaire   +2 more sources

The pathogenesis of virulent and avirulent avian infectious bronchitis virus

Archiv f�r die gesamte Virusforschung, 1973
This study compared the infections of chickens with virulent and avirulent strains of avian infectious bronchitis virus (IBV). Sixty 3-week-old chickens were infected by aerosol with a virulent strain of IBV and 60 with an avirulent strain. Immunofluorescent staining of impression smears and cryostat sections of the trachea revealed that the virulent ...
H E, Geilhausen, F B, Ligon, P D, Lukert
openaire   +2 more sources

Attenuation of Avian Infectious Bronchitis Virus by Cold-Adaptation

Avian Diseases, 1991
Avian infectious bronchitis virus (IBV) Arkansas-type DPI strain was passaged 10 times in specific-pathogen-free (SPF) chicken embryos incubated at 28 C and 37 C. Virus grown at 28 C acquired cold-adapted (CA) and temperature-sensitive (TS) characteristics based on more-rapid growth at 28 C and a reduced ability to grown at 41 C, respectively, compared
J, Gelb   +3 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy