Amino Acid Supplementation of Low Protein Turkey Growing Rations

A REVIEW of the literature on the amino acid requirements of poults has been presented by Almquist (1952). More recently, several papers have been published on the supplemental value of lysine and methionine in low-protein poult diets. Fisher et al. (1956) reported that lysine and methionine hydroxy analogue-supplemented low-protein diets resulted in poult gains superior to those produced by practical high-protein diets. These results are in agreement with those reported by Baldini et al. (1954). However, Klain et al. (1954) have shown that growth was superior for poults fed diets containing 25.5 and 28 percent protein compared to a 21.8 percent protein diet supplemented with methionine and lysine. Balloun and Phillips (1957) reported that in the 6–12 week period, lysine supplementation reduced the protein requirement of Broad Breasted Bronze by 2 percentage units. Johnson (1950) observed no improvement in rate of growth of turkeys from 10–20 weeks of …