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.
Define cooking,blanching and Canning - thermal processing? Cooking: Cooking is a primary process to make food more palatable and improve taste. This is not used as a preservati
What are the major functions of fruits? The major functions of fruits are the protection and spreading of seeds.
Explain Cardiopulmonary Resuscitation? The heart rhythm associated with cardiac arrest can be either ventricular fibrillation/ ventricular tachycardia (VT/VF) or other rhythms
A 70-year old woman presents with a 1-hour history of crushing substernal chest pain. Shortly after admission, the patient expires. An autopsy reveals calcium deposits in the intim
Q. What is the difference between the exocrine gland and the endocrine gland? Endocrine gland is a gland whose secretions are called as hormones that are collected by the blood
Q. Change in symptoms of aortic stenosis? Asymptomatic severe aortic stenosis patient needs to be followed once in a year or even more frequently. Patients with moderate aortic
Modification of Food Starches Positive attributes of starches can be greatly improved and/or negative characteristics diminished by slight and relatively simple modifications.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
The fibrous rings of the four valves of the heart are continuous with each other. They not only form the basis for the attachment of the corresponding valve cusps but also form an
what are the 3 main excretory produces of mammals?
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