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Encapsulated Niacin Reduces Rectal Temperature in Dairy Cows
Research at the University of Arizona has shown that feeding encapsulated niacin (Niashure) reduces rectal temperature during periods of high ambient temperature.

Document
Click here for the technical research report on Niashure
 
Encapsulated Niacin Helps with Heat Stress
In addition to the work done at the University of Arizona a field trial was conducted (200 cows per treatment) using Niashure (12 g/head/day.  Results include higher milk fat and protein in addition to lower rectal temperature.

Document
Click here for the summary of the Niashure study
 
Potassium's Role in Fighting Heat Stress
Research has shown that a positive DCAD (between +35 and +45 meq/100g of ration dry matter) increases fat-corrected milk.  Added potassium increases DCAD in the ration and also helps sweating, as potassium is the primary regulator of sweat gland secretion.  Suggested potassium feeding rate is 1.8% during periods of high ambient temperature.

Document
Click here for the Church and Dwight summary of potassium and heat stress