Chair of Animal Nutrition and Dietetics, Ludwig-Maximilians-University of Munich, Schönleutner Strasse 8, Oberschleißheim, Germany.
J Anim Physiol Anim Nutr (Berl). 2013 Feb;97(1):72-9. doi: 10.1111/j.1439-0396.2011.01244.x. Epub 2011 Oct 22.
In nine adult Warmblood horses with mild to moderate dental findings (no signs of discomfort during chewing), voluntary hay intake before and after dental correction was examined. In a second experiment, digestibility of feed and faecal particle size were determined (3 days of total faecal collection) before and after dental correction. During both digestion trials including a 3-day adaptation period, the amount of hay and concentrate (mixture of oats, barley and maize) was kept constant in each individual horse before and after dental correction. Voluntary hay intake in individual horses ranged from 11 to 22 g DM/kg BW/day and did not differ before and after dental treatment. Apparent digestibility of DM, energy, crude fibre and Nfe increased significantly after dental correction (energy digestibility before dental correction 46.8 ± 7.4%, after dental correction 51.5 ± 8.5%). Apparent digestibility of feed was higher in horses eating more concentrates than in those eating less concentrates. Improvement of digestibility was more marked in horses eating larger amounts of grain. There was no relationship between severity or type of dental alterations and improvement of apparent feed digestibility. Dental correction had no effect on faecal particle size.
在 9 匹有轻度至中度牙齿问题（咀嚼时无不适迹象）的成年温血马中，检查了牙齿矫正前后的自愿干草摄入量。在第二个实验中，在牙齿矫正前后（3 天的总粪便收集）确定了饲料的消化率和粪便颗粒大小。在包括 3 天适应期的两次消化试验中，在牙齿矫正前后，每匹马的干草和浓缩物（燕麦、大麦和玉米的混合物）的量保持不变。个体马的自愿干草摄入量范围为 11 至 22 g DM/kg BW/天，牙齿治疗前后无差异。DM、能量、粗饲料和 NFE 的表观消化率在牙齿矫正后显著增加（牙齿矫正前的能量消化率为 46.8±7.4%，牙齿矫正后的能量消化率为 51.5±8.5%）。吃更多浓缩物的马的饲料表观消化率高于吃较少浓缩物的马。吃更多谷物的马的消化率提高更为明显。牙齿异常的严重程度或类型与饲料表观消化率的提高之间没有关系。牙齿矫正对粪便颗粒大小没有影响。
