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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.
Ariel Bergeron (Texas A&M University) presents her poster on calcium as an alternative to help
mitigate the risk of Necrotic Enteritis, during IPPE 2020 in Atlanta, USA....
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Melha Mellata (Iowa State University) discussed how probiotics and live vaccines affect the gut microbiota of chickens, during the 8th Symposium on Gut Health in Production of Food Animals in St. Louis, USA....
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Introduction Avian coccidiosis is one of the most costly infectious diseases affecting the commercial poultry industry [1]. Coccidia that infect chickens include Eimeria acervulina, E. tenella, E. maxima, E. brunetti, E. necatrix, E. praecox, and E. mitis. These apicomplexan protists invade cells of the intestinal epithelium, evoking necrotic tissue destruction and resulting in reduced body weight gain in broilers, decreased egg production in layers, and fecal shedding of viable...
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FIGAP 2026: The Scientific And Technological Exhibition Of The Livestock Industry
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INTRODUCTION Coccidiosis is considered one of the most important poultry diseases worldwide due to the economic losses it produces in performance and due to medication usage (Williams, 2002; Dalloul and Lillehoj, 2005). The use of vaccines to prevent coccidiosis has proven to be successful (Lee et al., 2009; Danforth, 1998; Williams and Gobbi, 2002) and is widely used today in the U.S poultry industry (Agri-Stats, Fort Wayne IN). However, in the process of developing immunity,...
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Introduction Poultry production in Algeria faces many zootechnical and health constraints, such as viral infections like avian infectious bronchitis (IB). The avian IB virus (IBV), a member of the Coronaviridae family (order Nidovirales and genus Coronavirus), frequently infects broilers and egg-laying hens and leads to severe economic losses to the poultry industry [1]. Since its discovery in the 1930s [2], the IBV has been identified as the major cause of respiratory...
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Introduction Maternal immunity for Newcastle Disease (ND) can be quantified with Haemagglutination Inhibition(HI) test. Titres are expressed as log 2 values. Titres in a group are analysed statistically and mean titre in a group depicts status of flock immunity. Quantification of HI titre at day old age and subsequent quantification at weekly interval can determine the maternal antibody interference in normal...
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Derek Detzler (JEFO) talked about antibiotic-free production and poultry vaccination, during the 1st PoultryUniverse Coccidiosis Congress in Curitiba, Brazil....
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Introduction The avian influenza virus (AIV) H9N2 subtype was first characterized in 1966 as causing mild respiratory diseases in turkeys (Homme and Easterday, 1970) and, for the first decade after its isolation, was found only in shorebirds and mallards (Kawaoka, et al., 1988). However, after almost 50-years evolution and propagation, the H9N2 viruses have spread across most of...
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Sergio Luiz Vieira (UFRGS, Brazil), spoke about his experience with vaccine production and use when treating this disease, during the 1st PoultryUniverse Coccidiosis Congress in Curitiba, Brazil....
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Charles Hofacre (Southern Poultry Research) discussed the reduction of Salmonella on broilers going to the processing plant and gave additional recommendations, during IPPE 2019 in Atlanta, USA....
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What is ILT? Infectious laryngotracheitis, also known as LT or ILT, has often caused disease outbreaks at fairs in Michigan. ILT is a viral disease of chickens that can also cause disease in peafowl and pheasants. It typically results in a drastic death loss in a flock. ILT is easily spread by birds that are experiencing the disease, those that have survived the disease, birds that have been vaccinated with a live...
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APIs and Vitamin MARKET - The weak demand for the APIs
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Introduction Necrotic enteritis (NE) is one of the most important enteric infectious diseases affecting global poultry production with an estimated annual economic loss of more than $2 billion, largely attributable to increased costs associated with medical treatments and impaired growth performance [1,2]. Host-pathogen interaction in NE is complex and the nature of host and pathogen genetic factors implicated in NE pathogenesis is still unknown [3,4]. NE is caused by infection...
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INTRODUCTION
Fowl cholera is a cosmopolitan disease that affects all kinds of birds but often occurs in chickens and turkeys reared under intensive farming conditions (7). In Argentina, fowl cholera outbreaks are important in broiler breeders. The disease takes place as an acute fatal disease or most commonly, as a chronic infection. Vaccination should be considered in areas where fowl cholera is prevalent using either available bacterins and/or live vaccines, but...
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Elise Myers (MSD) spoke on the evolution of vaccines and tolerance of anticoccidials, among other topics, during the 1st PoultryUniverse Coccidiosis Congress in Curitiba, Brazil....
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Fiona Tomley (Royal Veterinary College) and Doug Korver joined Elizabeth Santin and Ricardo Hayashi to share their insights on Coccidiosis challenges, poultry immunity and vaccination, during the 1st PoultryUniverse Coccidiosis Congress in Curitiba, Brazil....
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Huayu Company and Hy-Line International: 20 Years of Partnership Driving China’s Egg Industry
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Introduction Coccidiosis is a major global veterinary health problem impacting on the production of domesticated sheep, cattle, poultry and even fish. It is a particularly problematic disease in chickens (due to their intense rearing conditions), costing the industry £38 million per year in the UK alone and, extrapolating from this, over 2 billion US dollars to the world’s farmers and poultry industries annually [1]. It is caused by various species of the genus,...
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Alan Young (Medgene Labs) spoke on outbreak responses, as well as vaccination programs and development, during 2019 NIAA Annual Conference: Animal Agriculture - Innovation, Technology and Consumer Engagement in Des Moines, Iowa, USA....
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Lighting as a Strategic Tool for Optimizing Poultry House Performance
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Sarah Tomlinson (USDA) gave an overview of the process, during 2019 NIAA Annual Conference: Animal Agriculture - Innovation, Technology and Consumer Engagement in Des Moines, Iowa, USA....
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