Infectious Laryngotracheitis
(ILT)
Poultry Pathology(Path-611)
Lecture 7
Dr. Muhammad Kashif Saleemi
DVM PhD
Associate Professor (Tenured)
Member NDCC
Department of Pathology, Faculty of Veterinary Science,
University of Agriculture, Faisalabad, Pakistan
,Introduction and History
◼ Itis an acute viral disease of chickens characterized by
marked dyspnea, coughing, gasping, and expectoration of
bloody exudate.
◼ ILT: Worldwide in distribution
◼ Most outbreaks in chickens occur in broilers more than 4
weeks of age or in mature or nearly mature chickens,
although all age groups are susceptible
◼ Very Common disease in laying birds including layers and
parent stocks
◼ First identified in 1925 and it was recognized with different
names like laryngotracheitis, infectious laryngotracheitis,
avian diphtheria etc.
, Introduction and History
◼ In 1931 special committee of AVMA name this disease as ILT
(ILT)
Poultry Pathology(Path-611)
Lecture 7
Dr. Muhammad Kashif Saleemi
DVM PhD
Associate Professor (Tenured)
Member NDCC
Department of Pathology, Faculty of Veterinary Science,
University of Agriculture, Faisalabad, Pakistan
,Introduction and History
◼ Itis an acute viral disease of chickens characterized by
marked dyspnea, coughing, gasping, and expectoration of
bloody exudate.
◼ ILT: Worldwide in distribution
◼ Most outbreaks in chickens occur in broilers more than 4
weeks of age or in mature or nearly mature chickens,
although all age groups are susceptible
◼ Very Common disease in laying birds including layers and
parent stocks
◼ First identified in 1925 and it was recognized with different
names like laryngotracheitis, infectious laryngotracheitis,
avian diphtheria etc.
, Introduction and History
◼ In 1931 special committee of AVMA name this disease as ILT
