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Induction of cystic oviducts and protection against early challenge with infectious bronchitis virus serotype D388 (genotype QX) by maternally derived antibodies and by early vaccination. 2011

J J de Wit, and J Nieuwenhuisen-van Wilgen, and A Hoogkamer, and H van de Sande, and G J Zuidam, and T H F Fabri
GD (Animal Health Service), P.O. Box 9, 7400, AA, Deventer, The Netherlands. j.d.wit@gddeventer.com

Since the end of 2003, strains of the D388 serotype (QX genotype) of infectious bronchitis virus (IBV) have caused considerable damage to the Dutch poultry industry. In order to better understand the pathogenesis of infection caused by this infectious bronchitis variant and to be able to support the poultry industry with substantiated advice to prevent or decrease the damage caused by the D388 strain, several vaccination and challenge experiments were performed in young specific pathogen free layers, young layers with maternally derived antibodies against the D388 strain and young commercial broiler breeders. The experiments confirmed the field observations that the D388 strain of the QX genotype is a very pathogenic strain that is able to cause cystic oviducts in a high percentage of birds, mortality due to nephritis and respiratory distress with complete tracheal ciliostasis and airsacculitis. Vaccination programmes using different combinations of heterologous live vaccines at day 0 or at days 0 and 14 induced a reasonable to high level of protection in the trachea, kidney, oviduct and air sacs against challenge with the D388 strain at 28 days of age. However, for very early protection, maternally-derived D388-neutralizing antibodies were shown to be very important. Titres of 9 to 10 log(2) maternally-derived D388 virus-neutralizing antibodies, which provided partial protection against tracheal damage and a high protection against replication of D388 in the kidney after challenge at 6 or 10 days of age, could be achieved using a broad heterologous live priming and subsequent boosting using inactivated IBV vaccines containing two or three heterologous IBV antigens.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009426 Netherlands Country located in EUROPE. It is bordered by the NORTH SEA, BELGIUM, and GERMANY. Constituent areas are Aruba, Curacao, and Sint Maarten, formerly included in the NETHERLANDS ANTILLES. Holland,Kingdom of the Netherlands
D009500 Neutralization Tests The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50). Neutralization Test,Test, Neutralization,Tests, Neutralization
D010057 Oviducts Ducts that serve exclusively for the passage of eggs from the ovaries to the exterior of the body. In non-mammals, they are termed oviducts. In mammals, they are highly specialized and known as FALLOPIAN TUBES. Oviduct
D011201 Poultry Diseases Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild. Disease, Poultry,Diseases, Poultry,Poultry Disease
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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