Infectious coryza, Biology

Infectious coryza

A highly infectious bacterial disease of chickens caused by Hemop hilus paragallinarum, is characterized by catarrhal inflammation of the upper respiratory tract, especially nasal mucosa and sinuses.   It is generally accompanied by other respiratory viral or bacterial infections that may act as predisposing factors and may perpetuate the condition. There is high morbidity but low mortality if not accompanied by secondary infections. The route of infection is conjunctival or nasal with rapid onset of disease over a 3-4 days period. The infection may linger on in a flock for 1-2 weeks and recovered birds may become carriers. The bacterium is susceptible to environmental factors and is easily killed by heat, drying and disinfectants.

Symptoms and lesions: The most common symptoms seen are inappetance, sneezing, coughing, swelling of face, combs and wattles, ocular and nasal discharge that may become purulent. Egg production may drop to significant level. The post-mortem lesions depend upon involvement of secondary infections but mostly restrict to upper respiratory tract that include catarrhal inflammation of nasal passages and sinuses, sticky eyes, sometimes conjunctivitis,  and tracheitis.

Diagnosis: A presumptive diagnosis may be made on clinical signs, lesions and isolation and identification of the bacteria in a Gram-stained smear from sinus.

Prevention and control: An all-in/all-out production system should be the farm policy. The overall health management and balanced nutrition would keep the infection away from the farm. Vaccines are used in areas of high incidence.

Posted Date: 9/18/2012 8:35:39 AM | Location : United States







Related Discussions:- Infectious coryza, Assignment Help, Ask Question on Infectious coryza, Get Answer, Expert's Help, Infectious coryza Discussions

Write discussion on Infectious coryza
Your posts are moderated
Related Questions
What do you mean by Post-Herbal Period ? Ans. It is difficult to draw a sharp line of demarcation between the transition period, marked by various attempts of classificati

Results of Monohybrid Crosses Mendel got the following results from his monohybrid crosses :- 1.         F 1  plants produced by a cross between two plants pure for the cont

Nursing Interventions of a Patient with Acute Alcohol: Intoxication  and Withdrawal Some nurses find it very difficult to work with the alcoholics. This is particularly true w

Q. Show the Anatomical Evidence? Anatomy is the study of the structure, organisation and development of cells and tissues of plants and animals. For over a century taxonomists

Define endocytosis of GLUT4 Transporters Person X is a healthy human who has volunteered to take experimental drug Y.  Person X has a normal dinner at 6 PM on April 1 and then

The pancreas performs digestive and hormonal functions. The enzymes secreted by the exocrine tissue in the pancreas help in the break down of carbohydrates, fats, proteins, and

How can coacervates be formed of phospholipids or polypeptides? Phospholipids are amphipathic molecules, i.e., they present a polar portion and a nonpolar portion. In contact w

Choose one property of water and explain why that property is important to life.

Q. Define osseointegration and its theories? Osseointegration implies that "it is a contact established without interposition of non bony tissue between normal remodeled bone a

who proposed the trinominal nomenclature