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Infectious bronchitis is an acute and highly contagious respiratory disease of chickens characterised by respiratory signs comprising gasping, coughing, sneezing, tracheal rales and nasal discharge. In addition, severe respiratory distress may occur in young chickens. Respiratory distress, decrease in egg production, and loss of internal egg quality and egg shell quality have been reported in layers. Some strains of the virus produce severe kidney damage and may be associated with high mortality. Moreover, this pathology is considered to have worldwide distribution, so it is not contro-lled totally. Knowing its most hazardous features is required to minimise the great impact which has in poultry farming. According to the current situation, it is essential to review and update this severe problem. The authors have developed a complete review in a didactic and graphic way, including images, tables, graphs, etc., accompanied by a short text, to make the handbook more understandable and affordable. This precise information will help the veterinarians to know everything about this topic and tackle it properly.
1. Introduction
2. IBV variability
IBV variants
Classification of IBV strains
IBV genotypes
IBV serotypes
IBV pathotypes
IBV protectotypes
3. Immune responses
Innate immune responses
Adaptive immune responses
Cell-mediated (CMI) and humoral immune responses
Decay of maternal antibodies
Humoral immune responses
Importance of memory CMI and humoral immune responses
4. Clinical signs, pathology andpathogenesis
Clinical signs
Pathology and pathogenesis
Macroscopic lesions
Microscopic lesions
IBV cell tropism
5. Specimen sampling and diagnostic methods
Bird selection
Blood sampling
Swab sampling
Necropsy and tissue sampling
Filter card paper
Diagnostic methods
Viral isolation
Molecular methods
Immunohistochemistry
Serological methods
6. Prevention and vaccine failure
IBV vaccines
Oculo-nasal vaccination route (live attenuated vaccine)
Spray vaccination (live attenuated vaccine)
Drinking water vaccination (live attenuated vaccine)
Injectable vaccination (inactivated vaccine)
Vaccine failure
IBV vaccines worldwide
7. References
- Autor/es Cintia Hiromi Okino, Hulimangala L. Shivaprasad, Hélio José Montassier, Igor Leonardo dos Santos, Maria de Fátima Silva Montassier, Monique Silva de França
- Fecha de edición diciembre 2013
- Nº Páginas 88
- Encuadernación Tapa blanda. Wire-o
- Tamaño 17 X 11
- Idioma Inglés