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How effective IBV surveillance can prevent ‘overvaccination’
Consistent surveillance and analysis of infectious bronchitis virus (IBV) at poultry production facilities can guard against “overvaccination” — where too much vaccine virus in the environment...
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Why ‘vaccinated’ chickens still get infected with IBV — and what to do about it
While many vaccines and vaccination programs effectively protect against the highly contagious infectious bronchitis virus in poultry, outbreaks of the disease still occur in vaccinated flocks.
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Early infectious bronchitis virus infection causes more severe false layer syndrome
Exposure to IBV has been linked with cases of false-layer syndrome, where large cysts in the oviduct prevent birds from laying eggs.
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Essential adjustments that improve IB vaccine efficacy in broilers
A few essential adjustments in the way infectious bronchitis vaccines are handled and administered at the hatchery can improve vaccine efficacy.
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Periodic IBV PCR testing is key to ensuring vaccination efficacy
Complexes should regularly evaluate the infectious bronchitis viruses (IBV) prevalent on their farms to help determine which vaccines can provide the best protection possible.
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Three keys to successful IBV control
Highly contagious and constantly evolving, infectious bronchitis virus (IBV) is notoriously difficult to control.
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Two years of IBV sampling underlines importance of surveillance work
Large-scale collection of samples from producers across the southern US is helping shed new light on infectious bronchitis virus (IBV) in chicken flocks — including uncovering a new serotype of the...
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Tackling stress key to protecting birds from coryza resurgence, says expert
Limiting stress in broiler flocks is key to preventing birds from succumbing to an infectious respiratory disease which is showing a resurgence in some areas of the US, according to a poultry expert.
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Surveillance of circulating IBV types essential for disease control
Surveillance aimed at pinpointing the type of infectious bronchitis virus that’s circulating in poultry flocks is essential to control of the disease.
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Foster Farms: Community approach key to managing coryza spread in poultry
Tackling endemic poultry diseases as a community rather than as individual producers can play an important role in controlling and limiting their spread.
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Sentinel broilers, PCR testing help isolate, identify evolving IBV populations in Arkansas
How do you look for new serotypes of a virus that might be circulating in an area? Sentinel birds are a good place to start, according to Abigail Reith, DVM, a technical services veterinarian for...
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Virulent ND in California sending wake-up call to US poultry industry
Outbreaks of virulent Newcastle disease (vND) that have spread from backyard to commercial flocks in California are providing a wake-up call to the entire US poultry industry.
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Genomic sequencing could aid ILT control efforts in poultry
Molecular virology is already leading to discoveries that will improve management of ILT, according to Stephen Spatz, PhD, molecular virologist with USDA’s Southeast Poultry Research Laboratory,...
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Novel technologies needed to combat IB in chickens
Despite decades of vaccination, the world poultry industry’s ongoing battle with infectious bronchitis (IB) continues to rage and points to the need for novel technologies to combat the disease.
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Mycoplasma synoviae demanding more attention as poultry industry grasps its full impact
Emerging, variant strains of Mycoplasma synoviae are causing eggshell apex abnormalities as well as production drops in both layer and breeding flocks worldwide, Anneke Feberwee, DVM, PhD, from GD...
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E. coli vaccination helps contain losses in broilers with IB infection
Field experience with infectious bronchitis in broilers during a harsh winter demonstrated that vaccination for secondary Escherichia coli infection helped stem losses
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Is genetics the key for lasting IBV immunity?
Manipulating the immune response may be one way infectious bronchitis virus (IBV) is controlled in the future, predict researchers studying genetic lines of poultry.
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Consistency, follow-up key to controlling IBV
Infectious bronchitis virus (IBV) is a “moving target” and trying to keep ahead of it requires consistency and follow-up, explained Sjaak de Wit, DVM, PhD, of GD Animal Health, the Netherlands.
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Biosecurity, disinfection, downtime keys to better ILT control
Strict biosecurity is the best defense against infectious laryngotracheitis (ILT) in broiler flocks, advises Maricarmen García, PhD, a professor at the University of Georgia.
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Vaccination protects broilers from IBV despite exposure to moderate ammonia levels
Properly vaccinated commercial broilers are protected from an infectious bronchitis virus (IBV) challenge despite exposure to moderate ammonia levels, according to a study that surprised researchers.
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Is MS the next ‘big, bad Mycoplasma’ for US poultry?
The US poultry industry is reporting more problems with virulent Mycoplasma synoviae according to Naola Ferguson, DVM
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Why infectious bronchitis is so resilient — and what broiler companies can do about it
Control of infectious bronchitis (IB) requires good biosecurity, good management and rigorous administration of a vaccine that matches the circulating virus as closely as possible, John Smith, DVM,...
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H9N2 could devastate America’s poultry industry
H9N2, a low-pathogenic avian influenza virus common in parts of Asia, the Middle East and North Africa, would be difficult to control if introduced to the US, said David Suarez, a research leader...
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Easy mistakes to avoid when managing respiratory disease in poultry
A methodical approach to managing respiratory disease in poultry can help veterinarians avoid misinterpreting data and making mistakes, according to David French, DVM, Sanderson Farms.
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Immune-response research could yield new IB strategies for poultry
Research into the immune response of chickens could help lead to strategies that enable chickens to resist infectious bronchitis (IB), Rodrigo Gallardo, DVM, PhD, professor, University of California...
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Sanderson Farms vet drawing new battle lines against ILT
Sanderson Farms growers have been asked to stop driving their farm trucks off the farm to help prevent outbreaks of infectious laryngotracheitis (ILT), according to Phil Stayer, DVM, head...
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Infectious bronchitis: The ‘eye of the storm’ for chicken health
Ask any poultry producer about the most economically important disease in broilers, breeders or layers. Infectious bronchitis (IB) almost always tops the list and could best be described as the...
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MG in poultry: Often overlooked but still costly
The incidence of Mycoplasma gallisepticum is currently low in broiler and broiler breeder flocks thanks to decades of effort by the US poultry industry, but producers should maintain their guard to...
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Avian influenza in the US: High-path, low-path and its link to other poultry diseases
David Swayne, DVM, PhD, a research veterinarian at USDA with more than 30 years' experience with avian influenza, talks to Poultry Health Today about the dreaded virus — how it travels, the...
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UGA’s Mark Jackwood: Stop ‘shooting in the dark’ with bronchitis vaccination
Microbiologist Mark Jackwood, PhD, University of Georgia, urges producers not to “shoot in the dark” with infectious bronchitis vaccines and, instead, to focus on surveillance, monitoring and...
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Managing ILT: Traditional CEO vaccines still provide ‘best protection’
John Glisson, DVM — professor emeritus at the University of Georgia and well-known respiratory disease specialist — talks about the ups and downs on infectious laryngotracheitis (ILT) in poultry...
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Infectious bronchitis: A moving target
University of Georgia’s Mark Jackwood, PhD, explains why infectious bronchitis keeps evolving and what poultry producers should do to stay ahead of the costly disease.
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