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

Deficiency diseases-iodine deficiency, Iodine  deficiency Iodine is an...

Iodine  deficiency Iodine is an important component of thyroid hormones, which play active role in several physiological process such as control of basal metabolic rate, oxidat

What are trophic levels, What are trophic levels? How many trophic levels c...

What are trophic levels? How many trophic levels can a food chain have? The Trophic levels correspond to positions on a food chain. thus producers always belong to the first tr

What are organic chemical groups that divide carbohydrates, What are the or...

What are the organic chemical groups that characterize carbohydrates? How are carbohydrates classified according to the presence of those groups? Carbohydrates are also called

Basic principles of planning diets for diabetes, Q. Basic principles of pla...

Q. Basic principles of planning diets for diabetes? The above objectives can be met by adhering to some of the basic principles of planning diets which include the consideratio

What is mendels crosses in genetics explain breifly, What is Mendel's Cross...

What is Mendel's Crosses in genetics explain breifly? Mendel found that if he transferred pollen from a green-seed strain to a yellow-seed strain and vice versa, in a process c

Define drug effects on food intake - causes taste changes, Define drug effe...

Define drug effects on food intake - Causes Taste Changes? Several drugs can cause an alteration in taste sensation, reduced acuity of taste sensation or leave an unpleasant af

Explain the associated procedure of reinforcement of patch, Explain the Ass...

Explain the Associated procedure of Reinforcement of Patch? Associated Procedures :  Coronary artery bypass grafting and repair of mitral valve are also carried out. P

Function of amino acids, FUNCTIO N OF AMINO ACIDS Proteins are poly...

FUNCTIO N OF AMINO ACIDS Proteins are polymers of amino acids. Glycine form porphyrin nucleus in chlorophyll and heme (= haem) proteins like haemoglobin and cytochrome

What are the aerobic and anaerobic exercises, Aerobic and Anaerobic Exercis...

Aerobic and Anaerobic Exercises Generally, there are two types of exercises: - Aerobic - Anaerobic Aerobic exercises are those in which the patient spends calories fro

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