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Poultry vaccines
Disease prevention by vaccination is an integral part of flock health management protocols. Active immunization using live vaccines is the current industry standard. Routinely used vaccines in chickens include MDV, NDV, IBV, and IBDV, and in turkeys NDV and HEV. Newer vaccines, including molecular recombinants in which genes of immunogenic proteins from infectious agents are inserted into a live viral vector, are also being examined for commercial use. Efforts are under way to enhance vaccine efficacy by the use of adjuvants, particularly cytokines. The vaccine delivery systems include in ovo injection, aerosol, spray, drinking water, eye drop, and wing web injection. The in ovo vaccination procedure is relatively new and at the present time it is used primarily to vaccinate broiler chickens against MDV. Birds respond to vaccines by developing humoral and cellular immune responses. There are two main types of vaccine available for poultry: live or killed.
Calier presents the authorization for broilers of its Primun Salmonella T vaccine against S. Typhimurium at the European Poultry Congress
In addition to the authorization for long-cycle poultry and broiler chickens, Primun Salmonella T also has a differential diagnosis of the vaccine strain by PCR
Calier has presented the authorization of its Primun Salmonella T vaccine for broilers before...
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I. INTRODUCTION To successfully develop a challenge model to simulate actual infection as seen in production practices, a seeder challenge model was proposed and previously shown to be an effective method to infect poultry (Cox et al., 1996, 2020). However, applying it in this way to young layers is novel. This pilot study was developed with the objective of determining the success of this challenge method. A second objective was to determine the base line effectiveness of the...
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Newcastle Disease (ND) and Influenza A (IA) are major poultry diseases affecting both commercial and backyard poultry production worldwide1 . We conducted a Nepal’s first nationwide ND and IA prevalence study in 2018, collecting samples from both in commercial and backyard poultry farms. In commercial and backyard farms prevalence of ND was 70% and 17.5% respectively. We also determined the prevalence of IA in these farms (commercial= 27.5%, backyard= 7.5%). Genotype II was the most...
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Javier Sanz Martín, shares with us his field experiences in autogenous vaccines and the role of EMAV....
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Javier Sanz Martín, mentions why we should use autogenous vaccines in poultry production....
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Javier Sanz Martín, talks about the use of autogenous vaccines and European regulations....
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1. Introduction Infectious bronchitis (IB) and Newcastle disease (ND) are highly transmissible diseases that cause substantial economic losses in the poultry industry [1, 2]. Infectious bronchitis is caused by infectious bronchitis virus (IBV), a gammacoronavirus with a single-stranded positive sense RNA genome [3]. Newcastle disease is caused by virulent strains of Newcastle disease virus (NDV), a paramyxovirus with a single-stranded negative sense RNA genome [4]. Infectious...
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Avian influenza was an exotic disease in Mexico until 1993 when the first H5N2 low-pathogenic avian influenza (LPAI) virus was identified. After many months of accumulating mutations, this low-pathogenic predecessor evolved into a highly pathogenic strain. This inevitably resulted in the authorities reporting the first H5N2 highly pathogenic avian influenza (HPAI) virus in 1994. To contain the HPAI virus, the government implemented a massive vaccination program, active surveillance,...
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Developing effective natural solutions for animals - Liptosa: 2020 Summary and 2021 Challenges
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1. Introduction Infectious bronchitis (IB) and Newcastle disease (ND) are highly transmissible diseases that cause substantial economic losses in the poultry industry [1, 2]. Infectious bronchitis is caused by infectious bronchitis virus (IBV), a gammacoronavirus with a single-stranded positive sense RNA genome [3]. Newcastle disease is caused by virulent strains of Newcastle disease virus (NDV), a paramyxovirus with a single-stranded negative sense RNA genome [4]. Infectious...
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Wevap, the new Calier tool, audits the vaccination process (LE). Auditing the vaccination process—from biosecurity measures and sample collection to vaccine preparation and application—is crucial for achieving the desired outcomes...
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Auditing the vaccination process from the biosecurity measures that go through the taking of samples or the preparation and application of the vaccine, is key to obtaining the expected results.Wevap the new Calier tool to audit the vaccination process (LE)
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Jim Sumner (Treasurer and former President of IPC) shares his experience on the International Poultry Council and the poultry industry, and comments on the challenges to face, in this Engormix interview....
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Afla V ONE 5 - 300 ppb Method for Total Aflatoxin Detection in Complete Feeds and Pet Food
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Gérard Léveque (Global Manager Animal Health at Hendrix Genetics) talks about the main challenges in the poultry industry and how to better communicate advances in genetics, in this Engormix interview....
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Respected Sir, I would be grateful if you explain me why is mean titer increase above the expected mean titer after vaccination of a breeder -45 wks old- could I consider that field challenge and repeat the vaccination ...
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Brian Jordan (University of Georgia) explains how False Layer Syndrome affects poultry and what can be done to prevent it, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Calier is thrilled to report the success of our conference "Advances in Autogenous Vaccines: challenges and opportunities" , in which we brought together more than 50 veterinarians and poultry and swine specialists to share the latest news on autogenous vaccines in Europe. It was a pleasure to have the collaboration of ...
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Evan Chaney (Cargill) speaks on colibacillosis, as well as the benefits of a postbiotic developed as a solution, in this interview during IPPE 2024 in Atlanta, USA....
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INTRODUCTION Salmonella spp. is the second most prevalent zoonotic pathogen in the European Union, and strictly related to poultry production, responsible for 60,050 human gastrointestinal infections during 2021 . In terms of the most significant serovars, Salmonella Enteritidis and Salmonella Typhimurium accounted for approximately 54.6% and 11.4% of the reported cases, respectively. However, salmonelosis can be...
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We investigated the kinetics of vaccine (A20 and Serva) and wild-type (Class 9) infectious laryngotracheitis virus (ILTV) strains in dust samples after challenge as part of experiments investigating the level of protection provided by variable initial vaccination coverage against the adverse effects of virulent challenge. Two isolator studies using day-old Cobb broiler chickens were conducted to test the effects of partial vaccination with A20 (Study 1, 15 birds/per isolator) or Serva...
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Enzymes have shown promising effects on performance and intestinal health in broilers (Toghyani et al., 2022). However, the dosage effect of enzymes and combination of different enzymes have not been extensively evaluated under the coccidial vaccine challenge condition. Therefore, a feeding study was conducted to examine the effect of dosage of xylanase+glucanase and the effect of its combination with a high level of phytase on growth performance, health, and welfare of broilers under a mild...
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