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

What are the classification of diabetes, Q. What are the Classification of ...

Q. What are the Classification of Diabetes? Several forms of diabetes have been identified as a result of research and survey conducted world-wide. These forms of diabetes incl

Explain ventricular aneurysm in miscellaneous conditions, Indications for S...

Indications for Surgery :  95 per cent of ventricular aneurysms occur after transmural myocardial infarction. Trauma, Chaga's disease, sarcoidosis and congenital causes are the ot

Photosynthesis, test to prove that carbondioxide is needed for photosynthes...

test to prove that carbondioxide is needed for photosynthesis to take place

Compute the amount of nacl need, A saline drip is to be prepared for a lab ...

A saline drip is to be prepared for a lab experiment that is looking at hydration in lab rats. Calculate the amount of NaCl need to make 4 liters of a 0.9% solution.

Homeostasis , The state of balance in the internal environment of the body ...

The state of balance in the internal environment of the body it includes control of the water balance of the blood, body temperature, blood sugar level and blood urea level. Each o

Effect of destruction of microbial barriers, Q. Effect of Destruction of Mi...

Q. Effect of Destruction of Microbial Barriers? Physical damage to the integument allows microbial invasion of the underlying nutrient-rich tissues and it is a common observati

Explain about oil-bearing fruits, Explain about Oil-bearing fruits Oil-...

Explain about Oil-bearing fruits Oil-bearing fruits, nuts and seeds have been grown and used for food for many centuries. More than 100 varieties of plants are known to have oi

Theoretical calculation of calorific value of a fuel, The calorific value o...

The calorific value of a fuel can be theoretically determined by using dulong's formula. It is assumed that heat evolved comes from the combustion of carbon, hydrogen, and sulphur

What is dyslipidaemia, What is Dyslipidaemia ? The results of epidemiol...

What is Dyslipidaemia ? The results of epidemiological studies, as well as trials with angiographic or clinical endpoints, confirm the importance of various lipid fractions in

What is visual accommodation, What is visual accommodation? Visual acco...

What is visual accommodation? Visual accommodation is the phenomenon of varying the curvature of the crystalline lens to make possible the variation of its refractivity to adju

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