Department of Experimental Sciences and Applied Biotechnology, Faculty of Veterinary Medicine, University of Messina, 98168 Messina, Italy.
Vet Rec. 2010 Jan 30;166(5):133-6. doi: 10.1136/vr.c502.
Concentrations of tryptophan (TRP) and serotonin (5-HT) in plasma were measured in 36 moderately trained Dutch warmblood horses after eight weeks on a high fibre (n=18) or high starch (n=18) diet. Samples were taken three hours after feeding, when the horse was at rest, either at 11.00 or 14.00 hours. Plasma 5-HT and pH were significantly higher in horses fed a high fibre diet than those fed a high starch diet (P<0.05 and P<0.01, respectively), and significantly higher levels of TRP were found in mares than geldings (P<0.05). Plasma 5-HT may therefore be a good marker of serotonergic activity.
在 8 周高纤维（n=18）或高淀粉（n=18）饮食后，测量了 36 匹中等训练的荷兰温血马血浆中色氨酸（TRP）和 5-羟色胺（5-HT）的浓度。当马在 11 点或 14 点休息时，在进食后 3 小时取样。与高淀粉饮食相比，高纤维饮食的马血浆 5-HT 和 pH 值显著升高（分别为 P<0.05 和 P<0.01），并且母马的 TRP 水平明显高于公马（P<0.05）。因此，血浆 5-HT 可能是 5-羟色胺能活性的良好标志物。
