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 climax stage of an ecological succession, Q. What is the climax...

Q. What is the climax stage of an ecological succession? The climax stage is the stage of an ecological succession in which the community of an ecosystem turn into stable and d

Natality - population parameters and regulation, Natality - Population Para...

Natality - Population Parameters and Regulation Natality is the ability of a population to increase. Natality rate is equivalent to birth rate which means the production of ne

Explain what is periodontal condition, Explain what is Periodontal Conditio...

Explain what is Periodontal Condition? If intact attachment apperatus without pocket, time is critical direction toward non-surgical repair to prevent periodontal breakdown

Why does the ingestion of alcohol increase diuresis, Q. Why does the ingest...

Q. Why does the ingestion of alcohol increase diuresis? Alcohol inhibits the secretion of ADH that is antidiuretic hormone by the pituitary that is why when it is drunk to exce

What are plant hormones, What are plant hormones? Plant hormones, also ...

What are plant hormones? Plant hormones, also known as phytohormones, are substances that control the embryonic development and the growth of the adult plant.

Into which subphyla are the protochordates divided, Into which subphyla are...

Into which subphyla are the protochordates divided? What are some representatives of each protochordate subphylum? Urochordates (or tunicates) and cephalochordates are the two

Antimicrobial barriers - proliferation of microorganisms, Q. Antimicrobial...

Q. Antimicrobial Barriers -  proliferation of microorganisms? The first barrier is the integument: a physical barrier to protect the food, e.g., the shell on eggs, the skin on

Definition of consciousness, Q. Definition of Consciousness? Consciousn...

Q. Definition of Consciousness? Consciousness is a phenomenon that is shared by nearly all people. It cannot be directly seen or touched. Yet it is real enough to most people.

Classification, list the major species of echinodermata

list the major species of echinodermata

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