In the absence of natural shelters, temporary lightweight structures are recommended for grazing animals in order to avoid heat stress. Although previous studies do not unequivocally confirm a reduction in animal welfare due to the lack of a shelter, animals have been shown to prefer shade. In addition, it is advisable to place the drinking vessels under or near the sheds.

Source: Animal Welfare. Textbook for colleges

Read more:

https://www.nadis.org.uk/disease-a-z/cattle/managing-heat-stress-in-dairy-cows/

Watch a short video - Managing Heat Stress in Dairy Cows:

https://youtu.be/4scOZg5DzU8