Infectious bursal disease (IBD), caused by infectious virus (IBDV), is one among the top five diseases of poultry that discernibly affects commercial industry. The mutating viral genome IBDV accounts for outbreaks in fields even after following stringent biosecurity measures and vaccination protocols. present study focussed on characterisation an field virus, IBD/CVAS/6, from a vaccinated flock...

Infectious bursal disease virus of chickens was purified, and its structure was examined by the negative-staining technique in the electron microscope. The buoyant density of infectious bursal disease virus in CsCl was found to be 1.34 g/cm(3). The morphological details suggest that the capsid of the virion consists of a single layer of 32 capsomeres arranged in 5:3:2 symmetry. The virion measu...

increased susceptibility of birds to avian pathogens in intensive husbandry system has emphasized on necessity of improvement of innate and specific immune responses of birds by the fast establishment of a beneficial microflora and immune stimulator factors to guarantee healthy and low-price products. during this study, 192 one-day-old broiler chicks (ross-380) in four groups with three replica...

Immunosuppression can increase the susceptibility of chickens to other disease-causing pathogens and interfere with efficacy vaccination against those pathogens. Chicken anaemia virus (CAV) infectious bursal disease (IBDV) are common causes immunosuppression in chickens. was induced by experimental infection either CAV or IBDV assess effect on Mycoplasma gallisepticum strain ts-304 virulent M. ...