Calf diptheria, Biology

Assignment Help:


Calf diptheria
The disease is a serious one usually affecting calves up to 2 years of age. The lesions are confined to larynx and pharynx, and consist of well-defined areas of necrosis which are adherent to the surrounding and underlying inflamed tissue. The disease may be enzootic. Fusobacterium necrophorum is the causative organism which is a gram-negative anaerobic bacilli.


Symptoms: There is painful moist cough with respiratory dyspnoea, excessive salivation, inability to swallow food, loss of appetite and increased body temperature. The animal loses condition rapidly due to lack of nutrition and toxin liberated by the organism. Necrotic patches develop on the mucous membrane in any part of mouth and larynx. A false membrane, adherent to the parts underneath is formed; when removed it leaves deep ulcers. In some cases the condition spreads to lung and liver  where secondary necrotic lesions develop. In acute and severe cases death may occur within a week after the onset of symptoms. Death may be caused due to toxaemia and obstruction to the respiratory passage.


Diagnosis: The nature of lesions are suggestive of calf diphtheria. The disease is confirmed by examining smears after staining with Gram’s stain or methylene blue, and isolating and identifying the organism. When a rabbit is inoculated with material from a suspected case, necrotic lesion develops at the site or inoculation, and the rabbit dies in 2 to 3 weeks.


Control: Attention should be given to hygiene to avoid the predisposing factor.Rough feed should not be given. Sulphonamides and penicillin can be used for treatment of early cases.


Related Discussions:- Calf diptheria

What is the vacuum puff drying, What is the Vacuum Puff Drying? The vac...

What is the Vacuum Puff Drying? The vacuum puff process has been developed for drying liquids under vacuum. The development of processes for drying liquids under vacuum came fr

Explain hazard, Explain Hazard Hazard  :  A  biological, chemical  or...

Explain Hazard Hazard  :  A  biological, chemical  or  physical agent that is reasonably likely  to cause illness or  injury in the absence  of  its control.

Inorganic substances, INORGANI C SUBSTANCES They are small, simple, lo...

INORGANI C SUBSTANCES They are small, simple, low molecular weight substances which are made of elements other than Carbon and Hydrogen combined together. Inorganic substan

Ulcerative enteritis (quail disease), Ulcerative enteritis (quail disease) ...

Ulcerative enteritis (quail disease) Ulcerative enteritis, caused by Clostridium colinum, is found in chicken, quails, pheasants, turkeys and some other birds. Clostridial or

Intro to Genetics and Punnett Squares , "Height" is an example of a gene, b...

"Height" is an example of a gene, but "Short" is an example of...

Define pseudo-yeasts, Q. What are the Pseudo-yeasts? These are like tru...

Q. What are the Pseudo-yeasts? These are like true yeasts but do not form spores. All the members of this group are particularly unsuitable for fermentation purposes as they p

#amphibia, amphibia class characteristics

amphibia class characteristics

Regulation of ovarian activity, Normal 0 false false false ...

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

What is phagocytosis , Phagocytosis is the ingestion of huge particles ...

Phagocytosis is the ingestion of huge particles like as bacteria and cell debris by large endocytic vesicles called as phagosomes.   In order to be ingested the particle must first

What is cerumen, Q. What is cerumen? Cerumen is a fatty, oily substance...

Q. What is cerumen? Cerumen is a fatty, oily substance produced by theceruminous glands in outer part of ear canal. This compound is generally referred to as ear wax and, toget

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