Ann: TPM Improves Negative Effects of Heat Stress in Poultry, page-38

Apart from purely financial considerations, poultry welfare and heat stress are very important social issues.

"Birds don’t have sweat glands. From various studies it has been proved that heat production is affected by
body weight, species and breed, level of production, level of feed intake, feed quality and also by the
amount of activity and exercise. Heat exhaustion is one of the chief causes of chicken death. Hence, it is of utmost importance to learn how to recognise various signs of a heat stressed bird and to take different measures for the well-being of your flock. Negative effect of heat stress on poultry welfare is a measure of concern both for backyard farmers and commercial enterprises".

Heat Stress on Poultry Welfare: A Strategic Approach (PDF Download Available). Available from: https://www.researchgate.net/public...tress_on_Poultry_Welfare_A_Strategic_Approach [accessed Dec 16 2017].
In my view the significance of this poultry/heat stress announcement has been undervalued by the market .
Kens