When cows are dealing with heat stress, sweating is one way to expel heat. Increasing the amount of perspiration is another way to help with dairies’  heat abatement programs. Trials that compared perspiration rates between cows that were clipped versus those not.

The shaved cows had higher perspiration than non-shaved, which means that clipping a herd in the early summer months could help in dealing with heat stress.

Two of these trials were conducted in Israel – studying body temperature and milk yields

As can be seen in the graph, the blue colored part shows that there was an avergae increase of 1,5 liters milk daily 

( Arkin et all 2010 , Yaniv Lavon et all, 2013 )