Goachet A G, Harris P, Philippeau C, Julliand V
URANIE, AgroSup Dijon, Dijon, France.
J Anim Physiol Anim Nutr (Berl). 2014 Dec;98(6):1081-7. doi: 10.1111/jpn.12177. Epub 2014 Mar 3.
This study aimed at evaluating, in previously inactive Standardbreds horses, the effect of 5 weeks of an exercise training programme on nutrient digestibility and faecal fermentative parameters (FFPs). As an increase in digestibility had previously been reported in trained endurance horses, we hypothesized that similar results would be found in horses being trained for other types of exercise on a different type of diet. After 3 weeks of dietary adaptation, a digestibility trial (DT1) was undertaken, over 3 days, in eight untrained Standardbreds with a fresh faecal sample being collected on the second day for FFP determinations. Six of the eight horses undertook a training programme, and after 5 weeks of exercise, the DT and the FFP measurements were then repeated (DT2). DT2 began after 3 days of inactivity. The same natural meadow hay (H) and pelleted complementary feed (CF) were fed throughout. For 5 days before the DTs, horses were fed 2.1% BW on a dry matter basis (55:45 ratio H:CF). Body weight and body condition score remained constant. Apparent digestibility of dry matter, organic matter, neutral detergent fibre, hemicellulose, crude protein and gross energy, as well as faecal total volatile fatty acids (VFA), acetate and propionate concentrations were significantly (p < 0.05) higher at DT2 than at DT1. A 5-week exercise programme had a positive impact on nutrient digestibility and FFP. Training may improve dietary energy supply, in particular via increased hindgut VFA production. The potential improvement of digestive efficiency with training should be taken into account when formulating nutritional recommendations for the exercising horse, particularly when performing light work, which is low-intensity exercise for 1-3 h per week.
本研究旨在评估在先前不运动的标准赛马中，为期5周的运动训练计划对营养物质消化率和粪便发酵参数（FFP）的影响。由于先前有报道称训练有素的耐力马的消化率有所提高，我们推测在接受不同类型饮食并进行其他类型运动训练的马匹中也会发现类似结果。在进行3周的饮食适应后，对8匹未经训练的标准赛马进行了为期3天的消化率试验（DT1），在第二天采集新鲜粪便样本以测定FFP。8匹马中的6匹进行了训练计划，运动5周后，重复进行DT和FFP测量（DT2）。DT2在3天不运动后开始。整个过程中饲喂相同的天然草地干草（H）和颗粒状补充饲料（CF）。在DT前5天，以干物质计，按体重的2.1%（H:CF比例为55:45）饲喂马匹。体重和身体状况评分保持不变。与DT1相比，DT2时干物质、有机物质、中性洗涤纤维、半纤维素、粗蛋白和总能的表观消化率，以及粪便总挥发性脂肪酸（VFA）、乙酸盐和丙酸盐浓度均显著更高（p < 0.05）。为期5周的运动计划对营养物质消化率和FFP有积极影响。训练可能会改善日粮能量供应，特别是通过增加后肠VFA的产生。在为运动马匹制定营养建议时，应考虑训练对消化效率的潜在改善，尤其是在进行轻度工作时，即每周进行1 - 3小时的低强度运动。
