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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.
Introduction Viral safety and potency are considered the two cornerstones for production of satisfactory vaccines. The three main aspects of viral safety of vaccines are the residual pathogenicity of vaccine virus, the presence of extraneous agents, and the inadequate inactivation of vaccine virus (Dodet et al. 2010) . Vaccine safety mostly have the priority over the potency; as the problems originating from the use of...
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The poultry industry constitutes a significant sector of Egypt agriculture. In Egypt, millions of birds are produced yearly with a value exceeding LE 60 billion. Broiler chickens are the largest segment of the industry. Birds raised under commercial conditions are vulnerable to environmental exposure to a number of diseases. Therefore, disease prevention by vaccination is an important part of flock health management protocols. Active immunization using live vaccines is the current industry...
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Kindly let me know, what is the scope of developing Infectious Bronchitis vaccine using Indian Variants for use in Indian Poultry Industry? ...
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FIGAP 2026: The Scientific And Technological Exhibition Of The Livestock Industry
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Introduction Avian influenza is a highly contagious worldwide zoonosis caused by avian influenza A virus (AIV) (Wlliams, 2016). This virus is a single strand RNA, negative sense, segmented virus that belongs to the family Orthomyxoviridae (Swayne and Glisson, 2013). Type-A influenza virus is isolated from birds and is termed avian influenza or avian flu (Alexander, 2000). The influenza virus contains two main surface segments, hemagglutinin (H) and Neuraminidase (N) segments...
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Manuel Da Costa (Zoetis) commented on trials done with five serotypes to improve poultry protection, during IPPE 2020 in Atlanta, USA....
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Supplemental dietary methionine sources have a neutral impact on oxidative status in broiler chickens
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Introduction In Egypt, poultry sector is the fastest growing industry, with over 90 billion Egyptian pound investments. (1$ = approximately 17 L.E.) (Sabry, 2019). It provides the country with the greatest part of its meat production, in addition to job opportunities for approximately 3 million employees (Sabry, 2019). Several pathogenic agents affect the poultry and associated with severe losses in the poultry production in Egypt specially Newcastle virus,...
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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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We’re glad to announce the 7th Conference on Poultry Intestinal Health which is to be held in the beautiful colonial city of Cartagena, at the Caribbean coast of Colombia from April 21st to 23rd, 2021*.
Keynote presentations by internationally renowned speakers will provide the latest scientific information on this subject and are the backbone for a diverse program in which there is plenty of room for short communications, discussion and networking.
The conference will...
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Definition: Vaccination is an idea to enhance the protective immunity In an organism by inoculating an antigen or substance. History: The word vaccination is derived from a Latin word “vacca” meaning “cow”. Old females of Turkish nomads used to keep a needle (immersed in small pox lesion) with them. They used to use these needles to scratch the newborn. The newborn would develop a disease little bit but after some time newborn would...
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Newcastle disease (ND) is caused by virulent strains of the Newcastle disease virus (NDV), also recently designated as the Avian Orthoavulavirus 1 (AOAV-1). It is one of the most devastating disease of poultry and wild birds. Phylogenetic analyses clearly distinguish historical isolates (obtained prior to 1960) from currently circulating viruses of class II genotypes V, VI, VII, and XII to XVIII. Genotype VII is predominant in the Middle East Region (Radwan et al....
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Infectious bronchitis (IB) was described in the USA for the first time as a respiratory disease of chickens. Its aetiological agent was isolated in 1936 and then identified as a Gammacoronavirus, namely infectious bronchitis virus (IBV) (Cook et al. 2012). Being a single-stranded RNA virus, IBV is highly susceptible to spontaneous mutation and genetic recombination, meaning that a large number of variants are circulating worldwide (de Wit et al. 2011; Jackwood 2012; Valastro et al....
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Karel Schat (Cornell University) talked about Marek's Disease and Infectious Bursal Disease when discussing this subject, during IPPE 2020 in Atlanta, USA....
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Introduction Avian Infectious bronchitis (IB) is a highly contagious and economically important worldwide viral disease of chickens. It affects chickens of all ages with severe signs in younger birds and high mortality rates especially when a co-infection with a secondary bacterial or viral pathogen(s) (1–4). Infectious bronchitis virus (IBV) mainly causes respiratory disease and nephritis in chickens but can also result in poor weight gain and lost feed efficiency in...
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Innovative Directions in Aflatoxin Testing Point to Measureable Gains in Quality Of Lab Data
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Kannan Ganapathy (University of Liverpool) talked about the epidemiology, prevention and control of this disease, during Avicolas Porcinos 2018 in Buenos Aires, Argentina....
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Infectious bronchitis (IB) is an acute and highly contagious respiratory disease of chickens throughout the world, so much so that many consider IB to be the most contagious of all poultry diseases . It is characterized by respiratory signs that include gasping for breath, coughing, sneezing, tracheal rales (rattled breathing), and nasal discharge. Egg-laying birds, in addition to respiratory signs, often also experience decreased egg production and loss of internal egg...
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