Potential declines in milk production of as much as 20% or more are the reason we need to be concerned about heat stress in dairy cows. Heat stress can reduce feed intake, milk production and reproductive efficiency. There are several options available to Kentucky dairymen to combat heat stress in cows.
Turner, Larry W.; Chastain, John P.; and Crist, William L., "Reducing Summer Heat Stress in Dairy Cows" (1988). Agricultural Engineering Extension Updates. 46.