Foot-rot, Biology

Assignment Help:

Foot-rot

Foot-rot is a term applied to the condition of feet of cattle, sheep, goats and sometimes pigs. It is characterized by inflammation, necrosis and ulceration of underlying tissues of foot. The disease is widespread in many tropical countries with highest incidence in sheep. The disease is related to climatic conditions. High temperature and humidity favour the disease. Foot rot in cattle and sheep is caused by Fusobacterium necrophorum complicated by Dichelobacter nodosus, especially in sheep.


Transmission:
Animals in chronic state transmit infection directly to healthy animals. The sheep can remain as carrier for 3-4 years. Conditions of wetness and warmth favour the persistence of bacteria in the pasture. Infected cattle may often serve as the source of infection.


Symptoms:
The earliest sign of foot-rot is swelling and moistness of skin of inter  digital cleft. This is accompanied by lameness which increases as necrosis under-runs the horn in cleft. The animal may carry the leg or walk on its knees. In severe cases, there may be anorexia and fever. Symptom less carriers may be present for a period up to 3 years.A history of lameness in a flock is suggestive of foot-rot. This can be confirmed from clinical examination of typical lesions and microscopical examination of smears from the lesions after staining with Gram’s strain or Loeffler’s methylene blue. The organisms appear pink coloured short rods.


Diagnosis: It is difficult to diagnose foot-rot. Identification of Gram-negative bacilli is sufficient to diagnose the disease.


Treatment and control: wet pastures should be properly drained. The affected hooves of the diseased animals should be trimmed. The exposed infected tissue should be treated with 10% formalin or with chloramphenicol or tetracycline. The parenteral treatment with a mixture of penicillin and streptomycin is of value.


Related Discussions:- Foot-rot

What is the properties of aqueous solutions, Which of the following is TRUE...

Which of the following is TRUE about the properties of aqueous solutions? Select one: a. A pH change from 5.0 to 6.0 reflects an increase in the hydroxide ion concentration (

How does the body defend itself from microorganisms, Q. How does the body d...

Q. How does the body defend itself from microorganisms and other harmful substances that enter the airway during the breathing process? The epithelium of the airway is a ciliat

Give the introduction of genesis of coronary artery diseases, Give the intr...

Give the introduction of genesis of coronary artery diseases and risk factors? Cardio-vascular diseases have their roots in the structure and functional alterations in the vasc

What organisms make glycogen, What organisms make starch? What is it used f...

What organisms make starch? What is it used for? What organisms make glycogen? What is it used for?

Which type of ecological interaction is competition, Q. What is competition...

Q. What is competition? Which type of ecological interaction is competition? The Competition is the ecological interaction in which the individuals explore the similar ecologic

Coxal glands, Coxal Glands There is a pair of coxal glands, in almost ...

Coxal Glands There is a pair of coxal glands, in almost all the segments in Onychophora (Peripatus). Developmentally; in every segment a hollow follicle or somite arises and i

Is NADH oxidized by the electron transport chain, The oxidation of glucose...

The oxidation of glucose produces NADH that is oxidized by the electron transport chain. What compound is the terminal electron acceptor of the electrons carried by NADH? -O2

Explain cytological evidence, Q. Explain Cytological Evidence? Cytology...

Q. Explain Cytological Evidence? Cytology is the study of the morphology and physiology of cells. The information about the chromosome number, shape and pairing at meiosis is u

Spermatogonia - spermatozoa, Normal 0 false false false ...

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

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