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Rous sarcoma virus (RSV) (/ r aʊ s /) is a retrovirus and is the first oncovirus to have been described. It causes sarcoma in chickens. As with all retroviruses, it reverse transcribes its RNA genome into cDNA before integration into the host DNA.
Chicken. Fatty liver hemorrhagic syndrome (also referred to as fatty liver syndrome or FLHS), a disease in chickens and other birds. Birds with this disease have large amounts of fat deposited in their liver and abdomen. [1]
Fowlpox virus Fowlpox is the worldwide disease of poultry caused by viruses of the family Poxviridae and the genus Avipoxvirus . The viruses causing fowlpox are distinct from one another but antigenically similar, possible hosts including chickens , turkeys , quail , canaries , pigeons , and many other species of birds.
Current strains of Marek virus, decades after the first vaccine was introduced, cause lymphoma formation throughout the chicken's body and mortality rates have reached 100% in unvaccinated chickens. The Marek's disease vaccine is a "leaky vaccine", which means that only the symptoms of the disease are prevented. [ 12 ]
Members of the family Flaviviridae have monopartite, linear, single-stranded RNA genomes of positive polarity, and 9.6 to 12.3 kilobase in total length. The 5'-termini of flaviviruses carry a methylated nucleotide cap, while other members of this family are uncapped and encode an internal ribosome entry site.
Orthomyxoviridae (from Ancient Greek ὀρθός (orthós) 'straight' and μύξα (mýxa) 'mucus') [1] is a family of negative-sense RNA viruses.It includes seven genera: Alphainfluenzavirus, Betainfluenzavirus, Gammainfluenzavirus, Deltainfluenzavirus, Isavirus, Thogotovirus, and Quaranjavirus.
Chicken anemia virus, or CAV, is currently a member of the Anelloviridae family which is found worldwide. [1] The virus only affects chickens . [ 2 ] CAV is a non-enveloped icosahedral single stranded DNA virus, [ 3 ] which causes bone marrow atrophy , anemia , and severe immunosuppression .
This virus can cause significant yield losses from 90–100%, and it is estimated that about 7 million hectares can experience TYLCV infection or mixed virus infections annually. Treatments that are commonly used for this disease include insecticides, hybrid seeds, and growing tomatoes under greenhouse conditions.