Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Viral Diseases
Avian encephalomyelitis
This is enterovirus disease of chicken, pheasants, turkeys and Japanese quails caused by the member of the family Picornaviridae. It causes inapparent infection or drops in egg production in adult layer birds, whereas in young chicks, it is responsible for epidemic tremors. There are 15 serotypes of the virus which are enterotopic in nature which differ in their neurotropism and virulence. The morbidity and mortality varies depending on the immune status of the birds. The disease is transmitted vertically through infected eggs or horizontally by ingestion of contaminated food and water. The virus is resistant to environmental conditions particularly if protected by organic matter.
Symptoms and lesions: In layers, the drop in egg production is very low (5-10%) and of short duration (less than 2 weeks). In breeders there may be a drop in hatchability of about 5%, but there is serious disease in the progeny involving central nervous system. The clinical signs include dullness, ataxia and tremors of the head and neck followed by paralysis, prostration and death. The mortality may reach upto 25%. Unilateral or bilateral blindness or corneal opacity may also be seen. There may not be any gross lesions seen during PM examination. In central nervous system, the inflammatory lesions are noticed in brain and ganglions however, peripheral nerves are not affected.
Diagnosis: Clinical symptoms and histopathological lesions, virus isolation and identification and detection of viral antigen in brain by fluorescent antibody technique confirm the diagnosis.
Prevention and control: Hatchery biosecurity and general hygienic measures should be followed.
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
Micrographia is abnormally small, cramped handwriting and/or the progression to continually smaller handwriting. This is one of the symptoms of Parkinson''s disease.
prove oxygen is produced during photosynthesis in the presence of light
What is MDRTB MDRTB - For patients with known exposure to multi-drug resistant TB (MDRTB) and a high risk of developing active TB, there are no data-based recommendations. Regi
Question 1 List various methods used for determination of blood glucose. Explain the principle of each test. Add a note on advantages and disadvantages of each method Qu
Q. How does facilitated diffusion present resemblance with enzymatic chemical reactions? One of the main examples of facilitated transport is the entry of glucose from the bloo
Q. Why is waste considered one of the major environmental issues? The environmental problem regarding waste worsens with industrial development and the global growth of consump
These views are obtained by placing the transducer in the suprasternal notch with the ridge pointing cephalad. The neck is extended during the suprasternal notch examination. Thi
organisms and their excretory organelles
From the above reading you must have understood how Dental implants have come into existence. Dental Implants are the future in dentistry and are becoming more and more widely used
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd