The article reports on the effects of orally administered amino acids on myofibrillar proteolysis in food-deprived chicks. The results showed that the administration of oral Glue, Ala, Gly, Ile, Leu, Ser, Thr, Pro, Met, Trp, Asn, Gln, Lys and Arg suppressed myofibrillar proteolysis in the food-deprived chicks.