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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.
New research from the University of Georgia indicates that multivalent vaccination can hinder immunity against infectious laryngotracheitis.
Producers should reduce the number and diversity of live-virus vaccines given in the field when also vaccinating for infectious laryngotracheitis (ILT), investigators from the University of Georgia advise.
In their study,...
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Introduction
The ILT disease was officially reported in Peru in August 2008, after the emergence of several outbreaks which began in the second quarter of that year and was characterized by a high morbidity and mortality. The disease was reported for the first time in poultry farms in the Department of Lima. Later on, the disease was described in other areas, including the departments of Arequipa,...
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Introduction During the last decades, infectious bronchitis in hens, (BIG), has caused enormous economic losses in the poultry industry. Its main prophylactic measure is based in the use of attenuated live vaccines, combined or not, with inactivated vaccines (Cavanagh & Naqi, 1997). In general terms, vaccination of flocks against the virus of infectious bronchitis in hens (VBIG) is performed at day one, after birth,...
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Introduction The Newcastle disease virus in its velogenic form continues to be a serious problem in the poultry industry worldwide. Biosecurity and vaccination measures are the more effective control methods currently available. However, the antigenic and genetic diversity of the virus has put a phylogenetic distance of the current vaccine strains from the recent velogenic isolates found in Central and South America...
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Dr. Sayed Abd El-Whab, MVScs and BVMSCs from the Friedrich Loeffler Institute, speaks about vaccine efficacy against HPAIV H5N1, at the XVII World Veterinary Poultry Association Congress in Cancun, Mexico. ...
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Introduction
Vaccines are one of the most cost-effective medical technologies. Traditional vaccines have many practical disadvantages regarding their production, usage and efficacy. The application of live attenuated vaccines has a severe threat of producing unwanted medical complications in case of uncontrolled growth of vaccine agent. A killed vaccine requires multiple administrations that increase the cost...
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Bacillus amyloliquefaciens CECT 5940 (Ecobiol®) go beyond performance in broilers under enteric pathogen challenge compared to antibiotic growth promoter and other commercially available probiotics
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Andrés Montoya, Manager of Technical Service-Poultry at Novus International Inc., speaks about the behaviour in the field of a coccidia vaccine in broiler chickens during 2010 in USA, at the XVII World Veterinary Poultry Association Congress, Cancun, Mexico. ...
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Vaccines are used to prevent or reduce problems that can occur when a poultry flock is exposed to field disease organisms. Vaccinations should be thought of as insurance. Like insurance, there is a price to be paid for protection against a potential threat. Costs include price of the vaccine, time spent designing the vaccination schedule and administering the vaccines, and losses due to vaccine reactions from the live-type vaccines...
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A controversial discussion: Which one provides long immunity? ...
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Developing effective delivery of biologically active molecules to the maturing egg embryo is the focus of research being undertaken by Dr Tim Mahony at The University of Queensland, in a collaborative project between the Poultry CRC, The University of Queensland and DEEDI.
"During the first round Australian Poultry CRC, we were focused on the development of a new more sustainable Marek's disease vaccine" said project leader Dr...
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Strategies to Reduce Colonization of Salmonella Enteritidis in Layers
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The trachea is an important defense line in the respiratory system and whole body system. The essential weapons of the trachea are cilia and mucosal secretions any fault in behavior of the weapons due to escape of the organisms and affect the body. How do pathogens affect the trachea?? 1-ND Newcastle disease: this disease due to cilia less of the trachea after 2 days of infection. 2-IB infection bronchitis: this virus affected the subepithelial cells of the trachea and due...
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Pakistan organized a "Free Animal Treatment Vaccination Camp" at UVAS Out Reach Station, Sittar Wala Lahore on Tuesday 18th of August 2009. The objective of the camp was to highlight the "Importance of vaccination program against Hemorrhagic Septicemia (HS)" in farm animals. Hemorrhagic Septicemia, a bacterial infectious disease caused by Pasturella multocida is one of the threatening diseases of animals which badly affects the health of animals and reduces its production.The disease...
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Mr Bernardo Lozano Dubernard (President Laboratorios Avimex ) introduces the company and presents its line of recombinant vaccines to control Avian Influenza. He also talks about the launching of Avimex pharmaceuticals. To play the video, click...
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Scientists are looking at a novel strategy to prevent the spread of pandemic avian influenza. They have developed a vaccine that protects ducks, a known natural reservoir for the virus. They reported their findings in the November 2008 issue of the Journal of Virology
Waterfowl are considered to be the natural reservoir of influenza A viruses due to the isolation of all subtypes from these hosts. Current research indicates that influenza A viruses are continuously evolving...
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We all realize that diseases cost both companies and growers and they both strive to avoid the consequences of disease. Diseases can be caused by microbes (viruses, bacteria, fungi or protozoa), internal or external parasites, genetic disorders or by nutrient deficiencies. Modern poultry production methods have virtually eliminated nutrient deficiencies and are addressing genetic disorders. However, both companies and growers continue to battle against microbes and parasites. Since fewer and...
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This one day technical conference will be held in Hannover, Germany on Monday 10th November 2008 (the day before Eurotier) which is for professional poultry producers, veterinarians and those in ancillary industries is hosted by International Hatchery Practice and International Poultry Production. After an introductory paper on "The role of vaccination in modern poultry production" by British poultry veterinarian Philip Hammond, the conference focuses goes on to focus on...
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The United States is the world leader in the poultry industry, with annual profits of $50 billion; however, food pathogens threaten the industry. Scientists are especially concerned about Avian Pathogenic Escherichia coli (APEC), which caused an estimated $80 million in losses in 2002. APEC has the potential to be as harmful as E. coli O157:H7, the strain responsible for human illness and death after consumption of contaminated meat. The genetic similarity between APEC and human E. coli...
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A workshop to help researchers navigate the registration processes for vaccines and other poultry health products has been held by Bioproperties Pty Ltd, an SME manufacturing animal vaccines in Australia. Before new vaccines for layers or meat chickens are released, they need to pass through the stringent demands of the Australian Pesticides and Veterinary Medicines Authority (APVMA), the Office of the Gene Technology Regulator (OGTR) and, in some cases, the European Union...
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Skystar Bio- Pharmaceutical Co., Ltd., a leading bio-pharmaceutical company in the People's Republic of China today announced that the Company was awarded the National High Technology Industrialization Pilot Project ("NHTIPP") for its DLV avian coccidiosis vaccine. Skystar received the NHTIPP award at the Ninth Shenzhen China High-Tech Fair in Shenzhen on October 12, 2007. The ACV project is a high-tech industrialization project approved and inspected by the National Development and...
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A new vaccine developed by CSIRO Livestock Industries to help control the common poultry disease, fowlpox, has been registered for commercial use by one of Australia’s leading animal health companies, Intervet Australia Pty Ltd. The vaccine – fowlpox # 2 – was developed by scientists from CSIRO’s Australian Animal Health Laboratory (AAHL) in Geelong, with funding support from the Rural Industries Research and Development Corporation’s (RIRDC) Chicken Meat R&D Program. CSIRO...
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