{"id":70012,"date":"2024-03-06T17:43:01","date_gmt":"2024-03-06T16:43:01","guid":{"rendered":"https:\/\/www.kersia-group.com\/health-alerts\/newcastle-disease\/"},"modified":"2025-02-27T16:22:23","modified_gmt":"2025-02-27T15:22:23","slug":"newcastle-disease","status":"publish","type":"page","link":"https:\/\/www.kersia-group.com\/en-au\/health-alerts\/newcastle-disease\/","title":{"rendered":"Newcastle Disease"},"content":{"rendered":"

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Newcastle Disease, how is it transmitted and what are prevention methods?<\/h2>\n

[\/vc_column_text][\/vc_column][vc_column offset=”vc_col-lg-6″][vc_column_text el_class=”carnas_green”]Newcastle Disease (ND) is a highly contagious viral infection with significant implications for both the poultry industry and wild bird populations. It is caused by a virulent strain of avian paramyxovirus type 1, posing a severe threat to the health and well-being of birds and can have devastating economic and social effects on the poultry industry. Comprehensive preventive measures including biosecurity measures are crucial to mitigate the risk of outbreaks on poultry farms.[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”vc_default” full_width=”stretch_row_content”][vc_column]

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What are the symptoms of Newcastle Disease virus (NDV) in infected poultry?<\/h2>\n

NDV can cause infection and clinical signs in a variety of bird species, and the severity of the disease can vary depending on factors such as the virus strain, the age, health, vaccination status of the birds. The most common symptoms of Newcastle disease in infected poultry include:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
<\/span><\/td>\nRespiratory signs:<\/u><\/b><\/span>
\nCoughing, sneezing, gasping for air, nasal discharge, swelling of the eyes and face,\u00a0 \u00a0 difficulty breathing (dyspnea)<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nDigestive signs:<\/u><\/b><\/span>
\nDiarrhea, greenish, watery feces, which is sometimes referred to as “green diarrhea”, leading to reduced feed and water consumption (most predominant form of signs)<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nNervous system signs (Neurological form, often in virulent strains):<\/u><\/b><\/span>
\nHead and neck twisting (torticollis), paralysis of the wings and legs, tremors, incoordination, circling or spinning, paralysis and death<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nDrop in egg production\/quality:<\/u><\/b><\/span>
\nInfected laying hens may experience a sudden drop in egg production, or eggs may have thin shells and irregular shapes.<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nReduced activity and morbidity:<\/u><\/b><\/span>
\nInfected birds often appear lethargic, depressed, and have a decreased appetite.<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nSwelling of the combs and wattles:<\/u><\/b><\/span>
\nIn some cases, the combs and wattles of infected birds may become swollen and purplish in color.<\/span><\/td>\n<\/tr>\n
<\/span><\/td>\nIncreased mortality:<\/u><\/b><\/span>
\nDepending on the virulence of the virus and the susceptibility of the bird population, Newcastle disease can lead to high mortality rates, especially in unvaccinated or improperly vaccinated flocks. In unvaccinated flocks, mortality can reach up to 100%. (CFSPH, 2016)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

It’s important to note that the symptoms of Newcastle disease can overlap with those of other respiratory and gastrointestinal diseases in poultry. A definitive diagnosis typically requires laboratory testing to confirm the presence of the Newcastle disease virus.<\/span><\/p>\n

If you suspect Newcastle disease in your poultry flock, it is essential to isolate affected birds, report the outbreak to relevant authorities, and seek the assistance of a veterinarian for confirmation and guidance on disease control measures. Rapid containment and control measures are crucial to prevent the spread of the virus to other poultry and mitigate economic losses in the poultry industry.<\/span><\/p>\n<\/div>\n

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How is Newcastle Disease transmitted?<\/h2>\n

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<\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=”1\/12″][\/vc_column][vc_column width=”5\/12″][vc_single_image image=”46146″ img_size=”full” alignment=”center”][vc_column_text css=”.vc_custom_1709808103528{margin-bottom: 50px !important;padding-top: 30px !important;}”]Through Direct Contact:<\/strong><\/span>
\nNewcastle Disease virus (NDV) can be transmitted through direct contact between infected and body discharges from susceptible birds (young birds are more at risk). This includes close contact such as beak-to-beak contact, mating, and fighting.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_single_image image=”46167″ img_size=”full” alignment=”center”][vc_column_text css=”.vc_custom_1719410812512{margin-bottom: 50px !important;padding-top: 30px !important;}”]Through Indirect Contact:<\/strong><\/span><\/p>\n

The virus can survive in the environment for varying lengths of time, depending on factors like temperature and humidity. Contaminated feed, water, equipment, and clothing can all serve as vehicles for indirect transmission.[\/vc_column_text][\/vc_column][vc_column width=”1\/12″][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/12″][\/vc_column][vc_column width=”5\/12″][vc_single_image image=”46176″ img_size=”full” alignment=”center”][vc_column_text css=”.vc_custom_1719410829766{margin-bottom: 50px !important;padding-top: 30px !important;}”]Through Airborne Transmission:<\/strong><\/span><\/p>\n

Newcastle disease virus can be aerosolized, especially in crowded or poorly ventilated poultry facilities. Infected birds can release virus-laden respiratory secretions into the air, infecting nearby birds.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_single_image image=”46185″ img_size=”full” alignment=”center”][vc_column_text css=”.vc_custom_1719410846048{margin-bottom: 50px !important;padding-top: 30px !important;}”]Through Infected Wild Birds:<\/strong><\/span><\/p>\n

Wild birds, particularly waterfowl and migratory birds, can carry and transmit the virus to domestic poultry when they come into contact with them or their environment.[\/vc_column_text][\/vc_column][vc_column width=”1\/12″][\/vc_column][\/vc_row][vc_row][vc_column]

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What measures can be taken to prevent Newcastle Disease?<\/h2>\n

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Preventing Newcastle disease is crucial for both commercial poultry operations and backyard poultry keepers. A combination of vaccination, biosecurity measures, and vigilance is key to reducing the risk of this contagious and economically damaging disease. It’s essential to consult with local agricultural authorities and veterinarians for specific guidance and regulations in your area.<\/div>\n

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Vaccination<\/h3>\n

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<\/div>[\/vc_column][\/vc_row][vc_row type=”vc_default” full_width=”stretch_row_content”][vc_column][vc_row_inner][vc_column_inner width=”1\/6″ offset=”vc_col-lg-2 vc_col-md-2 vc_hidden-xs”][\/vc_column_inner][vc_column_inner el_class=”col-full-wt-img” width=”2\/3″ offset=”vc_col-lg-8 vc_col-md-8 vc_col-xs-12″][vc_column_text css=”.vc_custom_1709745398665{margin-right: 31px !important;margin-left: 31px !important;padding-right: 50px !important;padding-left: 50px !important;}”]Vaccination is one of the most effective methods to prevent Newcastle disease in poultry. There are different types of vaccines available, including live and inactivated vaccines. The choice of vaccine depends on the specific circumstances and local regulations.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/6″ offset=”vc_hidden-sm vc_hidden-xs”][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row][vc_column]
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Biosecurity \/ Hygiene Measures<\/h3>\n

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<\/div>[\/vc_column][\/vc_row][vc_row type=”vc_default” full_width=”stretch_row_content”][vc_column][vc_row_inner][vc_column_inner width=”1\/6″ offset=”vc_hidden-xs”][\/vc_column_inner][vc_column_inner el_class=”col-full-wt-img” width=”2\/3″ offset=”vc_col-lg-8 vc_col-md-8 vc_col-xs-12″][vc_column_text css=”.vc_custom_1709827686880{margin-right: 31px !important;margin-left: 31px !important;padding-right: 50px !important;padding-left: 50px !important;}”]Implement strict biosecurity measures on poultry farms to minimize the risk of introduction and spread of the virus. This includes limiting access to the farm, disinfecting equipment, and keeping a clean and hygienic environment.<\/p>\n

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Cleaning & Disinfection<\/strong><\/p>\n