a still air environment gained less weight, consumed less
feed, and converted feed less efficiently between 28 and
49 d than birds subjected to moving air (constant or increasing).
Growth responses between the air velocity
treatments were similar from 28 to 35 and 36 to 42 d of
age. Increasing air velocity to 180 m/min improved (P ≤
0.02) the growth rate of broilers from 43 to 49 d of age
over birds receiving an air velocity of 120 m/min, but
the incidence of mortality was not affected. These results
provide evidence that increasing air velocity from 120 to
180 m/min is beneficial to broilers weighing 2.5 kg or
greater when exposed to moderate temperatures.