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.
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...
The University of Minnesota’s Secure Food Systems team develops and publishes science-based risk assessments for the movement of poultry products from monitored...
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.
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...
E.coli may be largely responsible for focal duodenel necrosis (FDN) in layer chickens, according to research presented at the 2022 International Poultry Scientific...
Inclusion body hepatitis (IBH) infections may not offer clear-cut clinical symptoms, but there are on-farm diagnostic measures that can yield early warnings.
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...
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.
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...
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...
While many vaccines and vaccination programs effectively protect against the highly contagious infectious bronchitis virus in poultry, outbreaks of the disease still...
DISCOVERIES, Issue 15: Rigorous research and the application of cutting-edge technology by Zoetis scientists were behind the development of the newest recombinant...
Poultry veterinarians throughout the US broiler industry are reporting a re-emergence of inclusion body hepatitis (IBH). The disease, caused by fowl adenovirus (FAdV),...
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.
A well-designed program using recombinant vaccines can help protect flocks against infectious bursal disease, infectious bronchitis and Newcastle disease.
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...
Despite industry advances, coccidiosis remains the leading intestinal health disease of broilers. Poultry Health Today asked experts to share latest insights and...
A whole-complex study of broiler breeders in Georgia found underwhelming infectious bronchitis vaccine performance – but with better surveillance and protocols,...
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...
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...
Adding a modified-live vaccine (MLV) to recombinant vaccine programs against three important viral pathogens in poultry production can have a positive impact on...
TOOLBOX, Issue 27: An interview with Daniel Bautista, DVM, senior technical services, Zoetis on managing the recent resurgence of inclusion body hepatitis in broilers.
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.
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...
Vaccination might be effective in controlling ILT in broilers, but recombinant vaccines might not always provide an adequate immune response, according to scientists at...
Broiler chickens exposed to infectious bursal disease virus are likely to develop more severe cases of the bacterial disease, necrotic enteritis, researchers in Canada...
Attention to detail is key to successfully vaccinating broiler flocks against infectious laryngotracheitis (ILT), according to a poultry health expert.
A genetic technique which could help improve predictions about the virulence of infectious bursal disease (IBDV) has identified pathogenicity in seven new strains of...
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...
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...
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...
Research is increasingly linking false layer syndrome to early exposure to infectious bronchitis virus. The condition prevents laying hens from producing eggs, but...
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...
Commercial broiler farms often employ a multi-faceted approach in tackling Salmonella, but testing different combinations of control options together on a small scale...
TOOLBOX, Issue 23: An interview with Kalen Cookson, DVM, MAM, Director of Clinical Research, Zoetis about Poulvac Maternavac 4 and Poulvac Procerta HVT-IBD.
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.
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,...
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.
Poulvac®️ Procerta™️ HVT-ND provides producers with all the advantages of a recombinant vectored vaccine while protecting chickens against Newcastle and...
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.
Virulent Newcastle disease resurged in Southern California as people broke quarantines by moving birds and farming equipment, according to a report by JAVMA.
Coccidiosis takes a toll of around $3 billion on global poultry production each year, making it one of the industry’s most economically significant diseases
An unusual presentation of bacterial septicemia in broilers underscores the importance of obtaining a good history and input from bird caretakers, according to David...
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...
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...
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...
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...
Emerging, variant strains of Mycoplasma synoviae are causing eggshell apex abnormalities as well as production drops in both layer and breeding flocks worldwide, Anneke...
Conventional wisdom dictates that infectious bursal disease virus (IBDV) field strains should determine the vaccine strategy. However, a recent study from Brazil...
Feed withdrawal before moving broilers to the processing plant appears to increase their susceptibility to Salmonella, indicates research from the University of
Strict biosecurity is the best defense against infectious laryngotracheitis (ILT) in broiler flocks, advises Maricarmen García, PhD, a professor at the University of...
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...
The incidence of histomoniasis, commonly known as blackhead disease, is increasing in Southeastern US broiler-breeding operations — and young breeders 25 to 30 weeks...
This week poultry specialists will gather in Denver, Colorado, for the second International Conference on Necrotic Enteritis. In this special report, Poultry Health...
Contaminated chicken feathers and feet may be the primary vectors for transmitting Salmonella from poultry houses to processing plants, according to Martha Pulido, DVM,...
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...
Turkeys are suffering from coccidiosis due to a lack of available medications, according to Greg Mathis, PhD, Southern Poultry Research, Athens, Georgia.
Not vaccinating broiler breeders for chicken anemia virus (CAV) because ELISA results show detectable antibodies could be asking for trouble, says Guillermo Zavala,...
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,...
Kalen Cookson, DVM, is the director of clinical research, poultry, Zoetis. He explained the common misconceptions about infectious bursal disease (IBD) to Poultry...
Farms affected by variant infectious bursal disease (IBD) viruses may find that currently available IBD vaccines aren’t always effective, said Daral Jackwood, PhD,...
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...
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...
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...
Broilers raised on used litter develop better immunity to necrotic enteritis (NE) than birds raised on new litter when challenged early with Clostridium perfringens,...
Growers shouldn’t assume the disinfectants they use in footbaths are effective against avian influenza (AI), indicates a study from the University of...
Poultry producers should assess their farm biosecurity in preparation for a return of avian influenza this winter, according to an expert in the spread and control on...
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...
Avian infectious bronchitis virus (IBV) is a highly contagious coronavirus found in chickens worldwide that costs the US poultry industry millions of dollars annually.
Managing Escherichia coli infection in commercial poultry flocks has to be tackled on three fronts to help cut losses and improve profitability, says Allan Ball, of the...
Two poultry veterinarians say that prevention of Escherichia coli infection is key as management trends toward free-range housing and reduced antibiotic use.
With many laying hens now remaining in production up to 500 days, it’s time to rethink infectious bronchitis (IB) protection protocols, says Dieter Vancraeynest, DVM,...
Alternative treatments may be the only long-term hope for managing blackhead in turkeys, said Robert Beckstead, PhD, turkey health specialist, North Carolina State...
Standardizing biosecurity measures across the poultry sector is key to protecting birds from avian influenza and ensuring outbreaks do not decimate trade, according to...
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...
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...
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...
The US broiler industry has long relied on coccidial leakage to create immunity against coccidiosis in chickens. In antibiotic-free production systems, leakage occurs...
