Nutrition

Protein Efficiency Ratio PER

Weight gain in grams per gram of protein consumed, measured in growing rats.

Real-life application

An older method still referenced in nutrition labelling and animal-feed formulation to compare how well different protein sources support growth.

Related terms

The proportion of absorbed nitrogen retained by the body, expressed as a percentage.

The essential amino acid present in a protein in the smallest amount relative to requirement, capping the use of all the others.

Practise the subject behind the definition.