Scrapie, Biology

Assignment Help:

Scrapie

This is a chronic fatal disease of sheep and occasionally of goats caused by a Prion agent similar to BSE. The disease is reported from Europe, North America and in a few countries of Africa and Asia.

Clinical signs: Incubation period is of 2-5 years. Affected sheep show excitement, signs of muscular tremors of head and neck, wavering gait, vacant look and paraplegia. Sheep develop pruritus with wool loss and skin rubbed raw. They loose weight and ultimately die.

Diagnosis: The disease is diagnosed by the clinical signs, direct electron microscopy of brain material or demonstration of Prion protein by Western blot. The agent can be transmitted to mice and hamster and these species are being used as laboratory models for characterizing the agent.


Prevention and control:
The disease is controlled by systematic detection of infected  and in-contact animals and their disposal by slaughter and consequently building disease free "certified flocks".


Related Discussions:- Scrapie

Explain phylum cyanobacteria, Phylum Cyanobacteria Cyanobacteria  are p...

Phylum Cyanobacteria Cyanobacteria  are prokaryotes,  but  they are not  like bacteria  in  the usual  sense of  the word.  The cyanobacteria  lack chloroplasts,  and  their  l

Define the interaction of vitamin c with lead and mercury, Define the inter...

Define the interaction of vitamin c with lead and mercury? Vitamin C, lead and mercury: Iron alleviates lead toxicity but ascorbic acid is ineffective. Ascorbic acid alleviat

Conventional cabg on cardiopulmonary bypass, Conventional CABG on Cardiopul...

Conventional CABG on Cardiopulmonary Bypass   Chest is opened by midline incision and median sternotomy. Simultaneously saphenous vein or radial artery is harvested. 'T

Write in 3-4 lines about the term belief, Q. Write in 3-4 lines about the t...

Q. Write in 3-4 lines about the term belief? Beliefs are learned by us when we were young. These include religious beliefs and beliefs about behaviour. Some beliefs lead to hea

Are the following statements true for eukaryotes, Are the following stateme...

Are the following statements true for eukaryotes , prokaryotes, both groups, or neither group? Answer They use a deoxyribonucleoside triphosphate as their energy currency"D They us

How to measure post repair prv/iv pressure, How to measure Post Repair Prv/...

How to measure Post Repair Prv/iv Pressure ? In the operating room, after coining of1 bypass and before removing cannulae the RV and LV pressures are measured. The pressures ar

Sporogenous tissue, Sporogenous Tissue The primary sporogenous cells (...

Sporogenous Tissue The primary sporogenous cells (PSCs) result after the periclinal division of the archesporial cells. The PSCs may undergo mitotic divisions and increase in

Echocardiography, Echocardiographic evaluation should be performed in all p...

Echocardiographic evaluation should be performed in all patients with clinically suspected IE, including those with negative blood cultures.  Not only is TEE the preferred approach

Community-based health insurance systems, Normal 0 false fals...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Determine the greater palatine nerve and vessel, Greater Palatine nerve and...

Greater Palatine nerve and vessel  The greater palatine nerve runs forward in a groove on the inferior surface of the hard palate to communicate with nasopalatine nerve in inci

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd