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What is Protein efficiency ratio is - and explain in detail?
Protein efficiency ratio (PER) is based on the weight gain of a test subject divided by its intake of a paicular food protein during the test period. From 1919, until very recently, the PET has been a widely used method for evaluating the quality of protein in food Ref: Dictionary of public Health, Dr. Jugal Kishore Pgno : 423-424