[Kinetics of the irreversible degradation in vivo of free L-threonine during lysine deficiency].

In adult fully grown rats deficient in L-Lysine, the speed of the irreversible degradation of free L-threonine equals 1.60 mmol/24 h/g as calculated for 1 mmol/kg administered. This speed is 23 per cent slower than that determined in non lysine deficient animals. This fact explains at least partially, the paradoxical resistance of the adult rat to the lysine deficiency.