Written by: Dr. Jacquie Jacob, University of KentuckySource: https://articles.extension.org/pages/68125/laryngotracheitis-in-poultryLaryngotracheitis (LT)—also called infectious laryngotracheitis (ILT) and laryngo—is a virus that affects chickens and pheasants. Chickens 14 weeks and older are more susceptible to this illness than are young chickens. As a result, most outbreaks occur in mature hens. Outbreaks have occurred in flocks of broilers older than three weeks of age. Improper use of vaccines is believed to cause this disease in broilers.LT can be spread mechanically from flock to flock by contaminated clothing, shoes, tires, and so on. LT is spread from bird to bird through the air on respiratory secretions. Infected birds cough and release the virus, which uninfected birds then inhale. Birds that recover from this illness should be considered carriers for life.
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