Evidence of Genetic Variability for Lysine Utilization

Ten Generations of Selection for Lysine Utilization in Japanese Quail

“…Enos and Moreng (1965) found significant differences between sire families in growth rate on a lysine deficient diet, and Nesheim and Hutt (1962) have reported marked differences between three strains of White Leghorns in the ability to grow and live on an arginine deficient diet. Enos and Moreng (1965) found significant differences between sire families in growth rate on a lysine deficient diet, and Nesheim and Hutt (1962) have reported marked differences between three strains of White Leghorns in the ability to grow and live on an arginine deficient diet.…”

Selection Procedures for Altering Specific Nutrient Requirements in Poultry

“…Several reports have indicated the existence of genetic variance among lines, families and individuals for dietary utilization of specific nutrients or classes of nutrients (Griminger and Fisher, 1962;Harms and Waldroup, 1962;Nesheim and Hutt, 1962;Sibbald and Slinger, 1963;Davidson and Mathieson, 1965;and Enos and Moreng, 1965). However, Lepore (1965) failed to show a lower dietary requirement for methionine when selection was for body weight at three weeks on a methionine deficient diet.…”