研究羊肉中L-肉碱抗疲劳作用。将昆明种小鼠分组，分别用平行实验和交叉实验测定抗疲劳功能，观察L-肉碱对实验小鼠游泳时间、身体指数、血清生理生化指标和腿部肌肉L-肉碱含量的影响。L－肉碱可以有效延长实验小鼠平均游泳时间，减轻体重及腹部脂肪量，显著降低血清中甘油三酯及总胆固醇的水平、乳酸及尿素氮含量；液相色谱显示小鼠体内L-肉碱含量与游泳时间有显著的相关性。L-肉碱有显著的抗疲劳作用。

The antifatigue effects of L-carnitine in mutton were studied. The influences of L-carnitine on swimming time, body index, physiological and biochemical parameters in serum and L-Carnitine contents in leg muscle of Kunming mice were determined by parallel and cross experiments. The results showed that L-carnitine could prolong the average swimming time, lower body weight and abdomen fat, and decrease the contents of CHO, TC, urea nitrogen and lactic acid in serum. HPLC analysis showed that the L-carnitine contents correlated closely with the swimming time of the mice.