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

Define institutional and cultural barriers - infuse biology, Define Institu...

Define Institutional and Cultural Barriers - Infuse Biology? Inside the university, the departmental promotion and tenure committees understand well the value of contribution t

Fertilization, Fertilization is the fusion of the two gametes (sperm and o...

Fertilization is the fusion of the two gametes (sperm and ovum) to produce a zygote which develops into the new individual with a genetic heritage derived from both the parents. S

Refining of crude oil, The crude oil obtained from earth's crust is refined...

The crude oil obtained from earth's crust is refined by following steps. Step 1: separation of water Cottrell's process is used for separation of water. Crude oil is an emu

Results of mitral valve replacement-mitral valve replacement, Results o...

Results of Mitral Valve Replacement: The risk of mitral valve replacement is reported as 3-5 per cent. It also depends on multiple factors like age, functional clas

What is the quaternary structure of a protein, What is the quaternary struc...

What is the quaternary structure of a protein? Do all proteins have quaternary structure? The quaternary protein structure is the spatial conformation because of interactions b

What is the difference between diffusion and osmosis, Q. What is the differ...

Q. What is the difference between diffusion and osmosis? Osmosis is the phenomenon of movement of solvent particles in general, water from a region of lower solute concentratio

Name the important food hydrocolloids, Some of the important food hydrocoll...

Some of the important food hydrocolloids are listed below: Alginate Carboxymethyl Cellulose Guar gum Gum Arabic Xanthan Gum Carrageenan All h

Define the consequences of obesity, Define the Consequences of Obesity? ...

Define the Consequences of Obesity? Obesity has a number of adverse effects and is a risk factor for several problems as highlighted in Figure. It is a risk factor for all caus

Atp molecules produced for each glucose molecule, Q. How many ATP molecules...

Q. How many ATP molecules are produced for every glucose molecule used in fermentation? And How many ATP molecules are produced for each glucose molecule used in aerobic respiratio

Explain the interaction of vitamin a with zinc, Explain the interaction of ...

Explain the interaction of vitamin a with Zinc? Its deficiency interferes with vitamin A metabolism. It leads to a reduction in the synthesis of plasma proteins, particularly,

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