Janczak A M., Bakken M, Braastad B O.
Department of Animal Science, Agricultural University of Norway, P.O. Box 5025, N-1432, Ås, Norway
Appl Anim Behav Sci. 2001 Jun 1;72(4):365-373. doi: 10.1016/s0168-1591(00)00200-8.
Nutritional L-tryptophan is reported to have positive effects on the behaviour of several farm animals. The present experiment describes some effects of nutritional L-tryptophan on the aversion-related behaviour of male mice selected for high litter size. The behavioural effects of L-tryptophan were observed in the elevated plus-maze, the light/dark test and a resident-intruder test. The only significant effect was observed in the resident-intruder test, where the total occurrence of exploratory behaviour by the intruder was reduced by L-tryptophan treatment. The present experiment provides a cautionary note advising against supplementation with L-tryptophan to improve animal welfare before the consequences of such treatment are fully understood.
据报道，营养性L-色氨酸对几种农场动物的行为有积极影响。本实验描述了营养性L-色氨酸对为高窝产仔数而选择的雄性小鼠的厌恶相关行为的一些影响。在高架十字迷宫、明暗试验和定居者-入侵者试验中观察了L-色氨酸的行为效应。仅在定居者-入侵者试验中观察到显著效应，在该试验中，L-色氨酸处理使入侵者探索行为的总发生率降低。本实验提供了一个警示，在充分了解这种处理的后果之前，建议不要补充L-色氨酸以改善动物福利。
