Naslov
INFECTIOUS BURSAL DISEASE OUTBREAK: EXPERIMENTAL INFECTION OF BROILERS WITH EVIDENCE OF SIGNIFICANTLY REDUCED BODY WEIGHT GAIN AND INTERFERENCE WITH TRANSCRIPTION FOR INTERFERON

Autori
Savić, Vladimir ; Ragland, William ; Novak, Renaka ; Ester, Katija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
II. International Symposium on Infectious Bursal Disease and Chicken Anaemia / Kaleta, Edberg ; Heffels-Redmann, Ursula - Rauischholzhausen : Europska komisija, 2001, 281-288

Skup
II. International Symposium on Infectious Bursal Disease and Chicken Anaemia

Mjesto i datum
Rauischholzhausen, Njemačka, 16.06.2001. - 20.06.2001

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Sažetak
A recent outbreak of infectious bursal disease (IBD) in vaccinated broilers in Croatia with generally no increased mortality, watery diarrhoea and significantly reduced body weight gains is described. Experimental infection of fully susceptible 30-day-old broilers with IBD virus (IBDV) isolated from affected chickens resulted in no mortality and mild clinical signs but body weight gains were significantly reduced (52.9 grams and 83.6 grams per day in susceptible and immune birds, respectively), during the two weeks after contact infection. Rapid seroconversion was noted in unvaccinated birds. Induced transcription of interferon alpha and gamma of susceptible broilers was significantly reduced on the 7th and 14th day after exposure to isolated virus, whereas induction in broilers vaccinated for IBDV was not reduced. Infection of 4-week-old SPF chickens with the virus resulted in severe disease with 60% mortality.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA