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Managing protozoal diseases in turkeys: There’s a lot we need to learn
Three experts from research, production and industry share their experiences and offer insights for addressing protozoal diseases in turkeys.
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Back-to-basics for managing health of cage-free pullets
Poultry producers with cage-free pullet systems should go back to the basics of bird management to keep their flocks healthy and productive.
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Why new HPAI variants continue to emerge
The frequency of highly pathogenic avian influenza (HPAI) outbreaks is on the increase in the US with 6 of the past 8 years experiencing some form of HPAI.
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Distinctive condition affects layers as well as turkeys, broilers
A disease commonly seen in turkey and broiler flocks can also affect layers, meaning that producers should look out for its distinctive signs.
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UMN expert: Transparency, communication keys to mitigating the risks of HPAI
website builder The US has a long history of effective disease control and has eradicated or remained free of many pests and agents even as they remain endemic in other parts of the world, said Carol...
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UMN training program focuses on poultry company decision-making, during AI outbreaks
The University of Minnesota offers a training program to help poultry companies understand and prepare for avian influenza outbreaks.
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SFS program helping to identify best practices for HPAI risk assessments
The University of Minnesota’s Secure Food Systems team develops and publishes science-based risk assessments for the movement of poultry products from monitored (uninfected) premises in control...
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Inclusion body hepatitis re-emergence prompts fresh look at control strategies
The US broiler industry is seeing a re-emergence of inclusion body hepatitis, a deadly disease that can strike with little warning. Take a look at our special report.
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Long-term control for IBH includes vaccines, management protocols
Inclusion body hepatitis (IBH) remains a nagging issue for broiler flocks, and it isn’t going away anytime soon.
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Vaccines, biosecurity, management keys to keeping IBH in check
Inclusion body hepatitis can be a challenging disease, as the clinical signs are non-specific and there is no direct treatment. Consequently, producers rely on interventions such vaccinations.
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E. coli implicated in layer gut disease
E.coli may be largely responsible for focal duodenel necrosis (FDN) in layer chickens, according to research presented at the 2022 International Poultry Scientific Forum (IPSF).
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Reusing poultry litter may reduce antibiotic-resistant Salmonella
Reusing poultry litter can help boost bird health and may help prevent the transfer of antibiotic-resistant Salmonella, scientists have discovered.
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Focus on the details to ensure ILT vaccination success
TOOLBOX, Issue 35: An interview with Dale Gambrill, Senior account manager, Zoetis
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Diagnostics for IBH start with subtle indicators
Inclusion body hepatitis (IBH) infections may not offer clear-cut clinical symptoms, but there are on-farm diagnostic measures that can yield early warnings.
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HPAI prevention requires ‘buckle-up’ mentality to biosecurity
The only option for poultry farms to prevent an outbreak of highly pathogenic avian influenza (HPAI) is 100% adherence to biosecurity rules.
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ILT vaccine choices: A closer look
With continued wild-type ILT challenges in the field, we are faced with a choice of two vaccine options with proven results — with different priorities affecting the final decision.
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Avian flu likely to re-emerge and threaten US poultry flocks this fall
US egg and turkey supplies took a hit from highly pathogenic avian influenza (HPAI) this spring as the wild-bird migration exposed domestic flocks to the virus.
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IBH gaining more attention in broiler flocks as incidence, mortalities rise
Inclusion body hepatitis (IBH) is not a new disease of poultry, but it’s quietly spreading to broiler flocks — initially with few clinical signs, followed by death in some flocks.
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Vaccine tweaks can make a big difference against key infectious bronchitis virus strain
New challenge studies have highlighted the best vaccine serotype combinations to tackle the DMV/1639 strain of infectious bronchitis virus (IBV), which has spread from the Delmarva area to become the...
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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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Strong, early protection with Poulvac® Procerta® HVT-IBD-ND attributed to extensive prototype screening, unique construction
DISCOVERIES, Issue 15: Rigorous research and the application of cutting-edge technology by Zoetis scientists were behind the development of the newest recombinant vaccine to protect broilers from ...
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Free booklet offers insights for addressing IBH in broilers
Poultry veterinarians throughout the US broiler industry are reporting a re-emergence of inclusion body hepatitis (IBH). The disease, caused by fowl adenovirus (FAdV), often strikes with little...
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Poulvac® Procerta® HVT-IBD-ND provides early immunity, convenience for producers
TOOLBOX, Issue 32: An interview with Kalen Cookson, DVM, Director of Clinical Research, Zoetis about the new recombinant vector vaccine, Poulvac Procerta HVT-IBD-ND.
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Veterinarian offers strategies for managing viral diseases in recombinant-based vaccination programs
A well-designed program using recombinant vaccines can help protect flocks against infectious bursal disease, infectious bronchitis and Newcastle disease.
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Survey shows US poultry industry’s evolving yet flexible approach to coccidiosis management
After years of being an afterthought in many broiler-production schemes, coccidiosis vaccines have become the cornerstone for many control programs.
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Poultry industry can learn from COVID-19
Biosecurity is not sufficient to control avian coronaviruses like infectious bronchitis in commercial poultry, no matter how good it is, said Mark Jackwood, PhD, a molecular virologist and professor...
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Special Report: New insights for managing coccidiosis in broilers
Despite industry advances, coccidiosis remains the leading intestinal health disease of broilers. Poultry Health Today asked experts to share latest insights and recommendations for managing this...
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Poor IBV vaccine performance in broiler study underlines need for surveillance
A whole-complex study of broiler breeders in Georgia found underwhelming infectious bronchitis vaccine performance – but with better surveillance and protocols, outcomes could be improved.
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Salmonella Enteritidis in feed can be a source for broiler flocks
The Southern Poultry Research Group created a challenge model to show how S. Enteritidis, can spread among birds when feed is contaminated and to help evaluate products that can eliminate or reduce...
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UK researchers: Watch for emerging, more infectious strains of avian flu virus
According to research led by The Pirbright Institute, UK, infection with two strains of avian flu virus could lead to the emergence of a new strain with the potential to jump from birds to humans.
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Interaction of modified-live and recombinant vaccines shows potential against viral diseases
Adding a modified-live vaccine (MLV) to recombinant vaccine programs against three important viral pathogens in poultry production can have a positive impact on outcomes, according to field work by...
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Tips for managing inclusion body hepatitis
TOOLBOX, Issue 27: An interview with Daniel Bautista, DVM, senior technical services, Zoetis on managing the recent resurgence of inclusion body hepatitis in broilers.
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Lockdown mode urged with avian flu outbreaks in Mississippi and Central Flyways
A warning to tighten up biosecurity and reduce movement in and out of poultry houses was issued by Terry Conger, DVM, poultry health epidemiologist with USDA’s APHIS.
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Highly pathogenic avian influenza found in Indiana commercial turkey flock
USDA's APHIS has confirmed the presence of highly pathogenic avian influenza in a commercial turkey flock in Dubois County, IN, the first confirmed case in commercial poultry in the US since 2020.
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Targeted adjuvants may improve recombinant ILT vaccination immune response
Vaccination might be effective in controlling ILT in broilers, but recombinant vaccines might not always provide an adequate immune response, according to scientists at North Caroline State...
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IBDV linked to severe necrotic enteritis in broiler chickens
Broiler chickens exposed to infectious bursal disease virus are likely to develop more severe cases of the bacterial disease, necrotic enteritis, researchers in Canada have found.
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Details matter when it comes to ILT vaccination success
Attention to detail is key to successfully vaccinating broiler flocks against infectious laryngotracheitis (ILT), according to a poultry health expert.
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Molecular test helps identify pathogenicity in new strains of infectious bursal disease virus
A genetic technique which could help improve predictions about the virulence of infectious bursal disease (IBDV) has identified pathogenicity in seven new strains of the virus which causes an...
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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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Lessons from the Midwest’s 2015 avian flu outbreak
The 2015 outbreak of highly pathogenic avian influenza (HPAI) in Minnesota was the worst the US has ever seen. What has the poultry industry learned from this and other outbreaks?
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Diagnostics key to effective mycoplasma control
Avian mycoplasmosis is a problem for poultry producers worldwide, but according to an expert, there’s no “one-size-fits-all” approach to managing it.
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False layer syndrome linked to early infectious bronchitis exposure
Research is increasingly linking false layer syndrome to early exposure to infectious bronchitis virus. The condition prevents laying hens from producing eggs, but birds display few outward signs of...
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Cross-protection vaccine protocols key to limiting DMV/1639 spread in US flocks
Combining serotype vaccines might be a popular approach to protecting flocks against evolving strains of infectious bronchitis virus, such as DMV/1639, but not all combinations work equally well.
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Testing mixed control approaches important in controlling Salmonella in broilers
Commercial broiler farms often employ a multi-faceted approach in tackling Salmonella, but testing different combinations of control options together on a small scale before they are rolled out...
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Pathways to protection: How one vaccine decision can affect options for managing other diseases in broilers
Broiler operations want to provide the best disease protection for the least cost, but deciding which vaccines to use and when can be a daunting task.
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Latest breeder, broiler vaccines provide consistent IBDV immunity
TOOLBOX, Issue 23: An interview with Kalen Cookson, DVM, MAM, Director of Clinical Research, Zoetis about Poulvac Maternavac 4 and Poulvac Procerta HVT-IBD.
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Serotype, presentation of IBH differ in large and small birds
More than one serotype has been the cause of inclusion body hepatitis (IBH) in broilers, which has presented differently in large- and small-bird complexes.
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NCSU: Enterococcus co-infection makes colibacillosis deadlier in poultry
Researchers from North Carolina State University have found that when a particular strain of Enterococcus is found alongside E. coli in cases of avian colibacillosis, there is a higher rate of...
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Consider predominance of AL-2 variants when planning IBDV vaccination program
The AL-2 family of variants is the predominant strain of infectious bursal disease virus (IBDV) circulating among US broiler flocks, according to a recent survey.
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Poulvac® Procerta™ HVT-ND provides advantages of a recombinant plus 19-day onset of immunity
Poulvac®️ Procerta™️ HVT-ND provides producers with all the advantages of a recombinant vectored vaccine while protecting chickens against Newcastle and Marek’s diseases as early as 19 days...
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ND is stable in US but poultry industry should be on lookout for evolving strains
Newcastle disease throughout most of the US remains stable, but the industry needs to be on guard for changes in the virus that may require adaption of ND vaccines.
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Highly pathogenic H7N3 avian influenza confirmed in US commercial turkey flock
A commercial turkey flock in South Carolina has tested positive for highly pathogenic H7N3 avian influenza (HPAI).
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Sanderson vet: Keeping up with variant reovirus strains remains challenging
Poor uniformity, lameness and reduced water consumption are tip-offs that broilers may be infected with variant reovirus.
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JAVMA report: Newcastle reemerges, spreads in California
Virulent Newcastle disease resurged in Southern California as people broke quarantines by moving birds and farming equipment, according to a report by JAVMA.
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Unusual presentation of bacterial septicemia in broilers tied to breeders
An unusual presentation of bacterial septicemia in broilers underscores the importance of obtaining a good history and input from bird caretakers, according to David French, DVM, a staff veterinarian...
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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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AVMA releases first-ever guidelines for depopulation of animals
The AVMA has published its first ever Guidelines for the Depopulation of Animals to help veterinarians support animal welfare in situations where the difficult decision to depopulate has been made.
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Navigating the maze of alternative products for necrotic enteritis control
The effectiveness of antibiotic alternatives is going to vary among “no antibiotics ever” production systems, and it’s up to the producers to figure out which alternatives will work.
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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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‘Take a holistic approach’ to get the most from Salmonella vaccination
TOOLBOX, Issue 4: An interview with Marco Quiroz, DVM, Zoetis
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To manage IBDV, ‘let the bird tell you what to do’
Conventional wisdom dictates that infectious bursal disease virus (IBDV) field strains should determine the vaccine strategy. However, a recent study from Brazil indicates the reverse is also true.
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Can water treatments help reduce Salmonella levels before processing?
Feed withdrawal before moving broilers to the processing plant appears to increase their susceptibility to Salmonella, indicates research from the University of Georgia.
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When you can’t have more than one: HVT vector or live vaccine for IBDV?
TOOLBOX, Issue 3: An interview with Kalen Cookson, DVM, MAM, Director of Clinical Research, Zoetis
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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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Halting in ovo vaccination not a good option for managing hatchery bacteria
Higher 7-day mortality from bacterial infections in the hatchery is no reason to stop in ovo vaccination for Marek’s and other diseases, according to a consulting poultry veterinarian.
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Study shows how unchanged boots disrupt biosecurity
Poultry farmers looking for ways to reduce the spread of viruses and bacteria in their facilities need look no further than the boots on their feet.
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Controlling coccidiosis helps prevent histomoniasis in broiler pullets
The incidence of histomoniasis, commonly known as blackhead disease, is increasing in Southeastern US broiler-breeding operations — and young breeders 25 to 30 weeks old seem particularly...
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Special Report: Nixing necrotic enteritis in broilers
This week poultry specialists will gather in Denver, Colorado, for the second International Conference on Necrotic Enteritis. In this special report, Poultry Health Today looks at the impact of this...
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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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Loose stools linked to blackhead disease transmission in turkeys
Enteric inflammation and loose stools can affect the rate that turkeys contract blackhead disease.
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On-farm Salmonella control helps prevent processing plant contamination
Contaminated chicken feathers and feet may be the primary vectors for transmitting Salmonella from poultry houses to processing plants, according to Martha Pulido, DVM, PhD, Mississippi State...
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Buckling down on biosecurity
For this special report, our editors talked with disease experts about what poultry companies can do to buckle down on biosecurity and protect their flocks from infectious diseases.
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‘Turkeys are suffering’ without good control of coccidiosis
Turkeys are suffering from coccidiosis due to a lack of available medications, according to Greg Mathis, PhD, Southern Poultry Research, Athens, Georgia.
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Foregoing CAV breeder vaccination based on ELISA results can backfire
Not vaccinating broiler breeders for chicken anemia virus (CAV) because ELISA results show detectable antibodies could be asking for trouble, says Guillermo Zavala, DVM, PhD, Avian Health...
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Lack of medications, veterinarians hamper turkey industry
The US turkey industry continues to be hampered by a lack of approved efficacious drugs, according to a 2017 survey. Since 2005, four medications have been withdrawn, leaving the industry without any...
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Seven misconceptions about IBD in broilers
Kalen Cookson, DVM, is the director of clinical research, poultry, Zoetis. He explained the common misconceptions about infectious bursal disease (IBD) to Poultry Health Today.
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How mutations, antigenic drift affect IBD management
Farms affected by variant infectious bursal disease (IBD) viruses may find that currently available IBD vaccines aren’t always effective, said Daral Jackwood, PhD, professor in food animal research...
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Clostridial dermatitis: Why is it so prevalent in turkeys?
Skin lesions in turkeys open the door to Clostridium infections and clostridial dermatitis, the most important disease in the turkey industry, according to a study by Kakambi Nagaraja, PhD,...
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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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Is feed a vector for avian influenza virus?
Layer feed does not appear to be a likely vector for transmitting the avian influenza (AI) virus, based on research conducted by Yuko Sato, DVM, of Iowa State University.
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Necrotic enteritis and age of litter: What’s the connection in broilers?
Broilers raised on used litter develop better immunity to necrotic enteritis (NE) than birds raised on new litter when challenged early with Clostridium perfringens, Steve Davis, DVM, president of...
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Avian influenza viruses can persist in footbaths and manure
Growers shouldn’t assume the disinfectants they use in footbaths are effective against avian influenza (AI), indicates a study from the University of California–Davis.
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Infectious bursal disease: ‘It’s never black and white’
Daral Jackwood, PhD, a professor at Ohio State University, is best known in the US poultry industry as the go-to expert on infectious bursal disease (IBD). In an interview with Poultry Health Today,...
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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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New flock-management trends call for new E. coli-management strategies, vets say
Two poultry veterinarians say that prevention of Escherichia coli infection is key as management trends toward free-range housing and reduced antibiotic use.
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Alternative therapies called best long-term hope for blackhead disease in turkeys
Alternative treatments may be the only long-term hope for managing blackhead in turkeys, said Robert Beckstead, PhD, turkey health specialist, North Carolina State University.
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Coccidiosis, necrotic enteritis challenge cage-free layer systems
Cage-free housing for egg layers allows birds to exhibit more natural behaviors, but it also carries an increased risk for morbidity and mortality...
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Compartmentalization key to global avian flu control
Standardizing biosecurity measures across the poultry sector is key to protecting birds from avian influenza and ensuring outbreaks do not decimate trade, according to a poultry health expert.
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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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Managing coccidia ‘leakage’ in antibiotic-free production systems
The US broiler industry has long relied on coccidial leakage to create immunity against coccidiosis in chickens. In antibiotic-free production systems, leakage occurs but can be more challenging to...
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IBDV: Management obstacles and options
By Daral J. Jackwood, PhD Professor, Department of Veterinary Preventive Medicine Food Animal Health Research Program Ohio Agricultural Research and Development Center The Ohio State University
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Shortage of medications remains top issue for US turkey industry
A shortage of effective, FDA-approved medications is still the top health issue for the US turkey industry, according to a survey conducted by a turkey veterinarian.
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‘Old bug’ with new name easily mistaken for E. coli peritonitis
Commercial chicken flocks that appear to have Escherichia coli peritonitis might actually be infected with a re-emerging old pathogen with a new name.
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Better accuracy, hatchability, protection seen in birds vaccinated with dual-needle system
Broiler studies demonstrate that a dual-needle in ovo delivery system yields more accurate vaccine placement, better hatchability and better disease protection compared to a single-needle...
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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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Inexperience leads to disaster in small specialty poultry flock
Disease and high mortality in a small Midwestern poultry operation demonstrate the consequences of inexperience coupled with the treatment restraints of organic farming, Patricia Wakenell, DVM, PhD,...
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Surveillance, careful vaccine selection tops “shoot-in-the-dark” strategy for IB control
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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Research: Highly pathogenic AI does not persist in wild birds
While the H5 avian influenza A virus that devastated some Midwestern poultry farms in 2014 to 2015 was initially spread by migratory waterfowl, evidence now suggests that highly pathogenic flu...
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Early SE infection likely to stay with broilers until market age
Broilers with lung exposure to Salmonella Enteritidis (SE) on the day of hatch are very likely to be positive for the pathogen at market age, say investigators.
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E. coli infection: Two types in broilers
While infectious bronchitis virus (IBV) remains a serious threat to broiler health, it often opens the door to costlier secondary E. coli infection.
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Video provides practical biosecurity tips for poultry
A training video that provides practical biosecurity tips for protecting commercial poultry flocks from avian influenza and other infectious diseases has been developed by the University of Maryland...
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The Poultry Smith
In this exclusive interview with Poultry Health Today, Fieldale Farms veterinarian John Smith reflects on his career, the state of the US poultry industry and, most importantly, what it needs to do...
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Backyard flocks biggest risk for spreading vvIBDV in US
By Daral J. Jackwood, PhD Professor, Department of Veterinary Preventive Medicine Food Animal Health Research Program Ohio Agricultural Research and Development Center The Ohio State University
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Condemnations, mortality shift focus to E. coli vaccination in some broiler flocks
While infectious bronchitis remains a serious threat to broiler health, it often opens the door to the more costly secondary infection, E coli, explained Kalen Cookson, DVM, director of clinical...
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Solving the mystery of gangrenous dermatitis in broilers
By Philip A. Stayer, DVM Corporate Veterinarian Sanderson Farms, Inc.
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E. coli in broilers: Its costly impact on condemnations and mortality
Infectious bronchitis is a never-ending battle for poultry producers, but its the secondary infection E. coli that often proves to be the most costly to broilers in terms of condemnations and...
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Five opportunities to optimize gut health, minimize necrotic enteritis in broilers
By Suzanne Dougherty, DVM, MAM, MS, DACPV Pecking Around Consulting, Inc. Madison, Ala.
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Necrotic enteritis in broilers: Disease or syndrome?
Steve Davis, DVM, of Colorado Quality Research, talks about emerging virulent strains of Clostridium perfringens and their impact on the prevalence severity of necrotic enteritis in broilers.
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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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Specialists explore new options for managing flock health while defending judicious antibiotic use
Growing demand for poultry raised without food-animal antibiotics has put more pressure on veterinarians to find alternative yet dependable disease-control options, according to a panel of nine...
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Managing E. coli in broilers in the face of IBV infection
Don Ritter, DVM, of Mountaire Farms, Millsboro, Delaware, details the company’s recent bout with infectious bronchitis in broilers and the costly secondary infection of E. coli that followed.
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Taking a holistic approach to poultry health
Poultry companies need to adopt a "more holistic approach" to poultry medicine — one that considers the birds' environment and other variables that can affect vaccine and antibiotic performance,...
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Free 2015 AAAP Proceedings Booklet
website builder Pressures to reduce or eliminate antibiotics from poultry production have created new health and welfare challenges for chickens and turkeys. In this lively roundtable...
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Getting gangrenous dermatitis under control
By Jon Schaeffer, DVM, PhD Director, Poultry Veterinary Services Zoetis Inc.
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Shift and drift affect broiler vaccination decisions
Few viruses in poultry remain static over long periods of time. Slight genetic shifts or mutations that occur during replication result in a genetic code drift away from the original virus. Over...
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HPAI spread by poor biosecurity
The USDA’s Animal and Plant Health Inspection Service (APHIS) recently released an updated epidemiology report outlining its findings on the spread of the highly pathogenic AI through June 5.
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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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Complex broiler-vaccine decisions require expert advice
Developing a vaccination program targeting optimal performance and return requires more planning and expertise than local “experts” at the farm store can offer.
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High stocking density predisposes broilers to NE
High stocking density has adverse effects on broiler welfare and intestinal health and predisposes the birds to necrotic enteritis (NE), according to the results of an experiment conducted by...
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The “Huddling Syndrome” in the southeastern US broiler chicken industry: on-going investigations
By Drs. Alexis Kiers, Samantha Pohl, Holly Sellers, Monique Franca, Brian Jordan, Stephen Roney Poultry Diagnostic and Research Center, University of Georgia, Athens, GA
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Eight ways to protect your farm from avian flu this fall
To prepare for the avian flu this fall, the National Chicken Council (NCC) has identified eight biosecurity principles for broiler and broiler-breeder producers.
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British vets question health, welfare of free-range chickens
While activists tout the happier, healthier life of free-range chickens, veterinarians in Great Britain have expressed concern about their long-term sustainability and increased likelihood of a major...
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Flu panel examines US control efforts, impacts on trade
With well over 200 outbreaks affecting more than 47 million poultry over the last six months, highly pathogenic avian influenza (HPAI) is hitting the US poultry industry hard.
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Poultry vet urges poultry producers to guard against E. coli
Long regarded as a secondary infection to respiratory disease, E. coli is now rated as a primary infection in many layer and broiler-breeder flocks, according to Jose Linares, DVM and technical...
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What’s left if we lose antibiotics?
Bacterial resistance is developing quickly and many critically important drugs risk becoming obsolete. Disastrous consequences lie in wait therefore unless these drugs are used prudently.
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USDA proposes new measures to reduce Salmonella, Campylobacter
The USDA’s Food Safety and Inspection Service (FSIS) on January 21 proposed new federal standards to reduce Salmonella and Campylobacter in ground chicken and turkey products as well as raw chicken...
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Broiler chicks show less tendon swelling, weight suppression in reovirus vaccine study
A recent study showed that broiler chicks receiving higher reovirus antibody levels from conventionally vaccinated hens had a lower incidence of tendon swelling and were protected from weight...
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Animal antibiotic study launched by Colorado State University
Colorado State University researchers are conducting a series of studies to track antibiotic-resistant bacteria in the animal agriculture industry in an effort to determine if farm practices are...
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Isolation of Campylobacter from the circulating blood of broilers
From a poultry processing viewpoint, Campylobacter presence in circulating blood of market-age broilers may increase the likelihood of cross-contamination between birds during slaughter.
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Poultry vet offers tips for managing vaccination programs for infectious bursal disease (IBD)
Producers have many options for vaccinating for infectious bursal disease (IBD), but there’s no blanket program for all operations or all seasons. Kalen Cookson, DVM, a veterinarian for Zoetis,...
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The changing face of reovirus in poultry
Don Waldrip, DVM, of Zoetis talks about new variants or reovirus in poultry and the best ways to manage it.
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Infectious bronchitis constantly evolving making it a tough target
Infectious bronchitis may not show symptoms in live birds but surprises poultry producers with condemnations at processing, says Tim Cummings, DVM, technical service veterinarian for Zoetis.
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APHIS veterinarian provides latest update on avian influenza
The current outbreak of highly-pathogenic avian influenza in British Columbia, Canada, and the Pacific Northwest of the United States is associated with wild bird migration in the Pacific flyway.
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Poultry disease identification made easier with test alteration
USDA scientists have found a way to make it easier to detect avian reticuloendotheliosis and Marek's disease by modifying an already available test.
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Field trials show practical, economic benefits of E. coli vaccine in broilers
Recent studies on two continents have demonstrated that a modified-live vaccine reduced losses from Escherichia coli in broilers, even when the disease challenge was strong.
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Kinky back takes costly toll on broilers at 4 to 6 weeks
Broiler producers are being urged to watch for signs of kinky back, an emerging bacterial disease of poultry that can cause significant losses in birds 4 to 6 weeks of age.
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Zoetis receives full license for Georgia 08 IB vaccine
Zoetis Inc. has obtained a full license from the USDA to sell Poulvac® Bron GA 08, the first commercially available vaccine to reduce disease caused by Georgia 2008 (GA 08) Type infectious...
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Increased CVI988 vaccine use credited with decline in Marek’s disease
Increased use of CVI988/Rispens vaccines is credited with declines in the incidence of Marek’s disease (MD), according to investigators from USDA‘s Agricultural Research Service.
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Single dose of Poulvac IBMM+Ark protects long-lived broilers for at least 9 weeks
One dose of the live, attenuated vaccine Poulvac® IBMM+Ark effectively protected broilers against two infectious bronchitis (IB) strains for at least 9 weeks, a recent study shows.
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Better protection shown with recommended Marek’s disease vaccine dose in two genetic lines
The recommended dose of two Marek’s disease virus (MDV) vaccines provided better protection in two genetic lines of meat-type chickens compared to a lower dose, the results of a recent study show,...
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