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Infectious Coryza
A peril to poultry
Sakina Rubab
Doctor of Veterinary Medicine
Introduction
• World wide disease of chickens
• Reported in quails and pheasants too
• USA : pullets, layers and broilers
...
Etiology
• Avibacterium paragallinarum( Haemophilus
paragallinarum )
• gram-negative
• pleomorphic
• non-motile
• catalase...
Epidemiology
• Ill birds: reservoirs
• All ages of chicken are susceptible
• Incubation period:1-3 days
• Disease course:2...
Transmission
• Direct contact, airborne droplets, and
contamination of drinking water.
• Egg transmission does not occur.
Clinical findings
• Facial swelling.
• Infra orbital sinusitis
• Oedema of face, around eyes
• Oedema of wattles and inter...
Lacrimation
Adherence of lids
Swollen wattles in male birds
Ocular discharge
Nasal discharge
Swollen wattles
(lateral view)
Swollen wattles
(front view)
Postmortem lesions
• Catarrhal inflammation of nasal passages and
sinuses
• Conjunctivitis
• Eye-lid adherence
• Caseous y...
Caseous material in sinuses
airsacculitis
Haemorrhagic trachea
Histopathology
The histopathologic response of respiratory
organs consists of disintegration and
hyperplasia of mucosal an...
Diagnosis
• Isolation of a gram-negative bacterium.
• Catalase test
• Polymerase Chain Reaction
• Haemagglutination-inhibi...
Differential diagnosis
• Mycoplasmosis: Chronic respiratory disease:
no involvement of infraorbital sinuses, in
turkeys: i...
Treatment
• Streptomycin and Lincomycin ( Lincospectin)
• Sulphamethoxazole and trimethoprim
(Sulfatrim)
• Tylosine ( Tylo...
Control
• Sound management and isolation.
• Replacements should be raised on the same farm or
obtained from clean flocks.
...
Vaccines against infectious coryza
References
• http://www.thepoultrysite.com/diseaseinfo/82/infectious-coryza/
• http://www.merckvetmanual.com/mvm/poultry/i...
Thank you
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Infectious Coryza

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This presentation comprises almost all the possible information about 'Infectious Coryza' in poultry.See how perilous can it be.
Sakina Rubab , DVM.

Published in: Health & Medicine
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Infectious Coryza

  1. 1. Infectious Coryza A peril to poultry Sakina Rubab Doctor of Veterinary Medicine
  2. 2. Introduction • World wide disease of chickens • Reported in quails and pheasants too • USA : pullets, layers and broilers • Pakistan: 3 weeks old chicks are affected
  3. 3. Etiology • Avibacterium paragallinarum( Haemophilus paragallinarum ) • gram-negative • pleomorphic • non-motile • catalase-negative • microaerophilic rod: requires nicotinamide adenine dinucleotide (V-factor) for in vitro growth.
  4. 4. Epidemiology • Ill birds: reservoirs • All ages of chicken are susceptible • Incubation period:1-3 days • Disease course:2-3weeks • Mortality 20%
  5. 5. Transmission • Direct contact, airborne droplets, and contamination of drinking water. • Egg transmission does not occur.
  6. 6. Clinical findings • Facial swelling. • Infra orbital sinusitis • Oedema of face, around eyes • Oedema of wattles and intermadibular space in male birds • Purulent ocular and nasal discharge • Sneezing • Dyspnoea • Loss in condition • Drop in egg production of 10-40% • Inappetance • Depression • Diarrhoea
  7. 7. Lacrimation
  8. 8. Adherence of lids Swollen wattles in male birds Ocular discharge
  9. 9. Nasal discharge
  10. 10. Swollen wattles (lateral view)
  11. 11. Swollen wattles (front view)
  12. 12. Postmortem lesions • Catarrhal inflammation of nasal passages and sinuses • Conjunctivitis • Eye-lid adherence • Caseous yellowish material in sinuses • Tracheitis • Bronchitis • Airsacculitis
  13. 13. Caseous material in sinuses
  14. 14. airsacculitis
  15. 15. Haemorrhagic trachea
  16. 16. Histopathology The histopathologic response of respiratory organs consists of disintegration and hyperplasia of mucosal and glandular epithelia and oedema with infiltration of heterophils, macrophages, and mast cells.
  17. 17. Diagnosis • Isolation of a gram-negative bacterium. • Catalase test • Polymerase Chain Reaction • Haemagglutination-inhibition (best)
  18. 18. Differential diagnosis • Mycoplasmosis: Chronic respiratory disease: no involvement of infraorbital sinuses, in turkeys: infra orbital sinuses are involved’ • Infectious laryngotracheitis: no involvement of infraorbital sinuses • Newcastle disease: nervous signs • Fowl cholera: no respiratory signs • Infectious Bronchitis: caseous plug at bifurcation of bronchi
  19. 19. Treatment • Streptomycin and Lincomycin ( Lincospectin) • Sulphamethoxazole and trimethoprim (Sulfatrim) • Tylosine ( Tylosan) • Erythromycin (Erythrocin) • Oxytetracycline (Oxy-LA) • Quinolones: Ciprofloxacin (Ciproxin)
  20. 20. Control • Sound management and isolation. • Replacements should be raised on the same farm or obtained from clean flocks. • If replacement pullets are to be placed on a farm that has a history of infectious coryza, bacterins are available to help prevent and control the disease. • Vaccination should be completed 4 weeks before infectious coryza usually breaks out on the individual farm. • Controlled exposure to live organisms also has been used to immunize layers in endemic areas.
  21. 21. Vaccines against infectious coryza
  22. 22. References • http://www.thepoultrysite.com/diseaseinfo/82/infectious-coryza/ • http://www.merckvetmanual.com/mvm/poultry/infectious_coryza/ overview_of_infectious_coryza_in_chickens.html • https://www.lah.de/Infectious-Coryza.89.0.html • http://www.poultryhub.org/health/disease/types-of- disease/infectious-coryza/ • http://www.beautyofbirds.com/bacterialandviraldiseases.htm • http://ps.oxfordjournals.org/content/77/8/1139.full.pdf+html • http://msucares.com/poultry/diseases/diseases.html • http://learn.chm.msu.edu/vibl/content/catalase.html • Pictures by Dr Jaime Ruiz, Cornell University and www.poultryhealthcentre.com
  23. 23. Thank you

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