Pharmacotherapy of Infectious Coryza and Infectious Laryngotracheitis in Poultry
PST 06107
Basic
Veterinary Pharmacology
Session 24: Pharmacotherapy of Infectious Coryza and Infectious Laryngotracheitis in
Poultry
Learning Tasks
By
the end of this session students are expected to be able to:
Define
Infectious
Coryza and Infectious Laryngotracheitis in Poultry
List signs and symptoms of Infectious Coryza and Infectious Laryngotracheitis in Poultry
Describe pharmacological treatment of Infectious Coryza and Infectious Laryngotracheitis in Poultry
Describe Control and Prevention of Infectious Coryza and Infectious Laryngotracheitis in Poultry
Activity: Buzzing
What is Infectious
Coryza in Poultry
?
Definition of Infectious Coryza and Infectious Laryngotracheitis in Poultry
Infectious
coryza
is an acute respiratory disease of chickens caused by the bacterium
Haemophilus
paragallinarum
(
gallinarum
)
Chronically ill or healthy carrier birds are the reservoir of infection
Transmission is by direct contact, airborne droplets, and by contamination of drinking water
The disease may be complicated with
Mycoplasma
gallisepticum
concurrent infection
Signs and Symptoms of Infectious Coryza in Poultry
The
symptoms include
oculonasal
discharge, sneezing, conjunctivitis with some adherence of the eyelids, and swelling of the face under the eyes extending to the
intermandibular
space and wattles.
Catarrhal inflammation of the nasal passages and sinuses and nasal discharge are observed at necropsy
Pharmacological treatment of Infectious
Coryza in
Poultry
Oxytetracycline
(20%), 200g/100 liters of drinking water for 3-5 days, or
Enrofloxacin
, one liter suspension /1500-4000 liters of water for 3-5 days, or
Sulfamethazine
drinkingwater
or 2000g/ton for 3 days
Sulphonamides
are contraindicated in layers
Activity:
Brainstorming
are the prevention and control measures against Infectious Coryza in Poultry?
Prevention and
control of
Infectious Coryza in
Poultry
Depopulate
and clean infected house before repopulating
Medication combined with vaccination program in which starter pullets are to be reared or housed on
infected premises
Key Points
Infectious
coryza
is an acute respiratory disease of chickens characterized by nasal discharge, sneezing, and swelling of the face under the eyes
The causative bacterium is
Avibacterium
paragallinarum
, a gram-negative, pleomorphic,
nonmotile
, catalase-negative
Prevention is the only sound method of control. “All-in/all-out” farm programs with sound management and isolation methods are the best way to avoid infectious
coryza
Evaluation
What
is Infectious Coryza in Poultry?
What are the common signs and symptoms of Infectious Coryza in Poultry?
What is the pharmacological treatment of Infectious Coryza in Poultry?
What are the control measures against Infectious Coryza
in Poultry?
REFER
Students to
Handout 24.1:
For Pharmacotherapy of Laryngotracheitis in Poultry,
References
Riviere
J. E.,
Papich
M. G. (2009).
Veterinary Pharmacology and Therapeutics
(9
th
Ed) Iowa, Wiley-
Blackwel
Publishers
Hsu
W. H. (2008).
Handbook of Veterinary Pharmacology
(1
st
Ed) Iowa, Wiley-
Blackwel
Publishers
Kuafmann
J, (1996).
Parasitic infections of domestic animals
, (2
nd
ed
).Berlin,
Birkhäuser
Verlag
Press
Hoare
E. W. (2013).
A manual veterinary therapeutics & pharmacology
(2
nd
ed
),New
York, Forgotten Books
Press
Maddison
. J. (
ed
) (2008).
Small Animal Clinical Pharmacology
, (2nd
ed
). Philadelphia, Saunders Elsevier Limited
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