It is widely understood that tunnel ventilation is a necessity when it comes to keeping market-age broilers comfortable during hot weather. Air speeds of 600 ft/min or more combined with evaporative pad cooling of ten degrees or more have proven to not only help keep heat stress related mortality to a minimum, but enable the birds to continue to eat and grow during even the hottest summer weather...
good excellent article, what`s the role of humidity in this formula ? and how to make coordination between Humidity, temperature and air speeds at the same time?
Humidity would play a significant role in the need to tunnel-ventilate young birds. The higher the humidity the more likely you would need to tunnel-ventilate a house. The guidelines provided in the article should provide a starting point for house operation. The best way to know if you need more air speed is to monitor the front to rear temperature differential as well as the birds. If the temperature rise becomes excessive or the the birds appear heat stressed fan capacity/air speed should be increased. Sorry to say there is no formula for optimal house operation.
Thank a lot for your article very useful for take decision in the field . if we done vaccination by intra ocular as example ND live vaccine sometime hear snoring in the night time when we control specially at Bird at age 5 weeks old. What we may to increase wind speed after vaccine in the night time ? please you give me suggestion. Thank you very much on attention.