The research used 100 day old chick, at
the 20th day chickens were weighed with
average body weight 450 grams. The birds
kept in cage system, as much as 20 cages
consisted of 5 chickens. In the early
maintenance (day 1 until today 20) every
cage is equipped by round feeder and round
watered, 60 watts bulb as heater hanging in
the middle of each cage and then (day 21 to
day 42) cages arranged so that temperature
was 28 – 340 C as heat stress condition.