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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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‘Reverse genetics’ may offer new IBV vaccine targets
Researchers at The Pirbright Institute in the UK report that a recent study provides evidence that mutations in the genetic code for non-structural proteins “offer a promising way” to make...
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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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California surveillance reveals genetic and seasonal changes in infectious bronchitis virus
Genotypes of infectious bronchitis virus (IBV) found in California between 2012 and 2020 have seen a “major shift,” according to a study investigating patterns of IBV in the state.
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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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False layer syndrome in Canada due to DMV/1639
False layer syndrome due to the Delmarva 1639 (DMV/1639) variant of the infectious bronchitis virus (IBV) is leading to huge economic losses in the Canadian egg industry.
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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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Infectious bronchitis DMV 1639: More questions than answers
By Philip A. Stayer, DVM, MS, ACPV, Corporate Veterinarian, Sanderson Farms, Inc.
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QX, 793b found to be most prevalent IBV field strains in Europe
DISCOVERIES, Issue 11: Two recent studies assessed the prevalence of various IBV strains in Europe in recent years, with QX and 793b proving the most common causes of virulent disease in chickens.
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Free booklet recaps highlights of infectious bronchitis roundtable
A colorful 28-page booklet recapping highlights of a roundtable discussion on infectious bronchitis virus is now available. The event featured experts and practitioners who shared their practical...
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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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Poultry experts cite frustration with infectious bronchitis variants
New, variant strains of infectious bronchitis virus in poultry will continue to emerge, but their control may depend primarily on strategic vaccination protocols that provide cross-protection from...
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Caution: Simple errors can derail IBV vaccine effectiveness
Common pitfalls that can occur while vaccinating broilers against infectious bronchitis virus (IBV) could derail vaccine effectiveness, panelists cautioned during an industry roundtable.
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DMV/1639 now the focus of many IBV control programs in US flocks
Variants of infectious bronchitis virus affecting broiler flocks differ regionally, but the strain causing the most concern lately appears to be Delmarva/1639.
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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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Controlling infectious bronchitis in broilers starts with breeder vaccination
Protocols vary widely, but vaccinating broiler breeders against infectious bronchitis virus remains an important strategy for protecting broiler progeny against the virus.
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Virulent ND outbreaks underscore need to rethink vaccination program
By Philip A. Stayer, DVM, MS, ACPV, Corporate Veterinarian, Sanderson Farms, Inc.
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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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Advanced diagnostic tests helping identify IBV in Europe
The QX strain of infectious bronchitis virus (IBV) remains the most common variant of IBV in Europe, but the prevalence of the variant 02 strain appears to be on the increase
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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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Selection of IBV GA 08 vaccine, proper administration can minimize reactions
TOOLBOX, Issue 10: An interview with Kalen Cookson, DVM, MAM, Director of Clinical Research, Zoetis
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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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Salmonella Infantis can complicate respiratory problems in broilers
Salmonella Infantis can become a persistent problem in broilers and exacerbate mortality when combined with infectious bronchitis, experience indicates at an integrated South American poultry
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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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SPECIAL REPORT – IBV: Managing a moving target
Infectious bronchitis virus, or IBV, is a year-round threat to poultry flocks, but it's especially challenge in the cooler months when producers reduce ventilation to save on energy costs.
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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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Can improper vaccination make IBV worse?
Improper vaccination not only fails to protect flocks from infectious bronchitis virus (IBV), but it can also make the problem worse, a leading poultry health expert says.
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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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Understanding the clinical picture key to effective IB control
Avian infectious bronchitis virus (IBV) is a highly contagious coronavirus found in chickens worldwide that costs the US poultry industry millions of dollars annually.
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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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More diagnostics advised for better IB management in broilers
By Lloyd Keck, DVM, ACPV Senior technical services veterinarian, Zoetis Inc.
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IBV variants in poultry: Aiming for cross-protection
By Mark W. Jackwood, PhD Poultry Diagnostic and Research Center Department of Population Health College of Veterinary Medicine University of Georgia
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IBD vaccination: HVT vector vaccine or live?
By Kalen Cookson, DVM, MAM Director of clinical research Zoetis Inc.
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Field vaccination for respiratory disease: spray or pump?
By Philip A. Stayer, DVM Corporate Veterinarian Sanderson Farms, Inc.
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IBD V877 vaccine can break through maternal antibodies
A live infectious bursal disease (IBD) vaccine based on the V877 strain can override maternal antibodies, doesn’t revert to virulence and has limited interactions with other live vaccines.
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Mountaire veterinarian discusses managing E. coli in broilers in the face of IBV infection
Don Ritter, DVM, of Mountaire Farms, details the company’s recent bout with IB in broilers and the costly secondary infection of E. coli that followed.
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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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Fowl typhoid can become a multi-bacterial disease in poultry
ATLANTA, Jan 27 - New research from Mississippi State University is helping our understanding of this disease of laying hens.
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Three more broiler diseases you can manage with vaccination
There's more to poultry health than Marek's, IBD, ILT and ND. Vaccines also play major roles in curbing these common diseases.
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Breaches in biosecurity: Sanderson Farms vet shares three valuable lessons
By Philip A. Stayer, DVM Corporate Veterinarian, Sanderson Farms, Inc.
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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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Waste-heat recovery system could save millions annually while improving air quality
A team of researchers and engineers from the University of Missouri has developed a waste-heat recovery system that could lead to significant savings in propane costs for producers heating their...
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Reducing false positives pays in ELISA mycoplasma testing
Poultry producers should consider specificity when selecting a Mycoplasma ELISA test to avoid costs associated with false positives.
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The growing importance of nighttime air quality
By Drs. Michael Czarick, Brian Fairchild and Brian Jordan Department of Poultry Science, University of Georgia, Athens, GA
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Avian Mycoplasma diagnostics
By Naola Ferguson-Noel, Poultry Diagnostic and Research Center, Department of Population Health, University of Georgia, Athens, GA
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