Bring the cows out of the intense summer sun. This lowers the solar heat load on the animal and therefore she has less heat to lose. Natural shade, shade structures, or a well ventilated barn are all suitable. Air velocity increases the natural cooling ability of the animal by carrying away the hot air close to the skin and allowing fresh air to replace it. Air exchange removes the hot, moist air from around the animal and from the building along with providing fresh air.
Water is the most important ingredient in milk.
During summer heat cows will increase their water intake. However, this extra water is first utilized in cooling through respiration and sweating. Any left over will be used to produce milk. The Pennsylvania State University is committed to the policy that all persons shall have equal access to programs, facilities, admission, and employment without regard to personal characteristics not related to ability, performance, or qualifications as determined by University policy or by state or federal authorities. The Pennsylvania State University does not discriminate against any person because of age, ancestry, color, disability or handicap, national origin, race, religious creed, sex, sexual orientation, or veteran status.