Infectious coryza, Biology

Assignment Help:

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.


Related Discussions:- Infectious coryza

Optional use values of biodiversity, Q. Optional use values of biodiversity...

Q. Optional use values of biodiversity? Optional values are associated with potential use in the future. Accordingly one opts to conserve biodiversity based on the hope that it

List the types of gellan gum, List the types of Gellan gum.   The three...

List the types of Gellan gum.   The three types of gellan gums are: High acetyl gellan (partially deacetylated) Low acetyl gellan (highly deacetylated) High cl

Name the serogroups of meningitidis, Serogroups  Five major serogroups ...

Serogroups  Five major serogroups of N. meningitidis, A, B, C, Y and W-135, cause most human infection. Serogroup A is the leading cause of disease in the "meningitis belt" acr

Defective extra-preputial protrusion of the penis, Defective extra-preputia...

Defective extra-preputial protrusion of the penis This defect is a result of hypoplasia or a defective penile erection due to a congenital mucosal fold – the frenulum - betwee

What is the significance of the -r group, Q. What is the significance of th...

Q. What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as lateral chain, is the variable part of the amino acid mole

Myocardial ischemia, In patients with coronary artery disease an acute coro...

In patients with coronary artery disease an acute coronary syndrome event can precipitate heart failure. Mitral regurgitation occurring as a result of papillary muscle ischemia con

How are the main classes of arthropods classified, How are the main classes...

How are the main classes of arthropods classified according to the presence of larval stage in their embryonic development? In crustaceans there are species with direct and oth

Describe about mixed type of ta pvc, Describe about Mixed Type of TA PVC ? ...

Describe about Mixed Type of TA PVC ? Management depends upon the type of TAPVC and could be very challenging. However the basic principle is to get all the pulmonary veins to

Explain the classification of hydrocolloids by function, Classification of ...

Classification of hydrocolloids by function It must be clear to you now that gum ghatti, gum karaya, gum tragacanth ( classified as exudate gums) locust bean  gum, guar g

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