The article discusses how air temperature, humidity, and velocity affect pigs and poultry in hot climates. An effective temperature equation was created to show the combined impact of these factors. The equation considers air temperature, humidity, and air velocity to determine the overall heat stress on the animals. The study found that the importance of temperature and humidity is similar for pigs and poultry, regardless of their size. The equation also includes a term for air velocity, showing how it affects the animals' comfort level.