A Computer Simulation on the Rate of Avian Influenza Disease Spread among Chickens

Abstract

Avian influenza is one of only two “Class A” poultry diseases targeted for emergency disease control measures by the OIE (World Organization for Animal Health). This viral disease can cause exceptionally high mortality. It is caused by an orthomyxovirus type A. Transmission is through direct contact with secretions from infected birds, especially feces, waterfowl, equipment, clothing, drinking water. This paper determined the rate of avian influenza disease spread among chickens. Six comparisons were made from the combination of four breeds of chickens in this comparative simulation experiment. Results indicate that layer chickens have significantly fastest avian influenza infection rate among chicken breeds followed by Kabir, broiler and native chickens. Significantly higher initial number of heads in a flock (A) alone or a combination of average contact of chickens with feces, respiratory discharges, water, feed, and bedding materials (B) and average time chicken spent with flock (C) will significantly increase avian influenza infection rates in chickens.