Tereos Syral, 67390 Marckolsheim, France.
J Dairy Sci. 2013 Feb;96(2):1094-101. doi: 10.3168/jds.2011-4949. Epub 2012 Nov 29.
This study was conducted to evaluate the effects of 2 different daily doses of short-chain fructooligosaccharides (scFOS), a prebiotic ingredient, added to a calf milk replacer on growth performance, carcass characteristics, and fecal concentrations of short-chain fatty acids of preruminant veal calves. In total, 112 male Prim'Holstein calves, between 8 and 10d of age, were randomized in this study according to their body weight and were bred until the age of 168 d. They were fed a calf milk replacer containing 5% soluble wheat proteins as well as cereal-based pellets, the composition of which was adapted to cover the needs of the animals throughout the study. After 2 wk of adaptation, the calf milk replacer was supplemented or not supplemented with a daily dose of 3 or 6g of scFOS. Growth performance of calves, as measured by body weight, cold carcass weight, feed intake, average daily gain, and feed conversion ratio, was recorded and feces samples were taken to evaluate short-chain fatty acid concentrations. The inclusion of wheat proteins in milk replacer did not negatively affect the growth performance of calves in comparison with general standards. The addition of scFOS in the milk reduced the feed conversion ratio of veal calves in a dose-dependent manner and tended to increase the carcass weight. A general trend was observed for an increased production of total short-chain fatty acids in time, but scFOS decreased acetate proportion to the benefit of butyrate proportion. These data suggest that inclusion of scFOS in the calf milk replacer allowed the growth performance of preruminant calves to be enhanced, possibly via a modification of the activities of microbial fermentation.
本研究旨在评估两种不同剂量的短链果寡糖（scFOS）作为益生元成分添加到犊牛代乳中的效果，对反刍前小牛肉犊的生长性能、胴体特性和粪便短链脂肪酸浓度的影响。本研究共选用 112 头雄性 Prim'Holstein 犊牛，年龄在 8 至 10 日龄之间，根据体重随机分组，饲养至 168 日龄。它们饲喂含有 5%可溶性小麦蛋白的犊牛代乳以及以谷物为基础的颗粒料，其组成适应了动物在整个研究期间的需求。适应期 2 周后，犊牛代乳或不添加每日剂量为 3 或 6g 的 scFOS。通过体重、冷胴体重量、采食量、平均日增重和饲料转化率等指标记录犊牛的生长性能，并采集粪便样本评估短链脂肪酸浓度。与一般标准相比，代乳中添加小麦蛋白对犊牛的生长性能没有负面影响。scFOS 的添加以剂量依赖的方式降低了小牛肉犊的饲料转化率，并倾向于增加胴体重量。随着时间的推移，总短链脂肪酸的产量呈现出普遍增加的趋势，但 scFOS 降低了乙酸盐的比例，有利于丁酸盐的比例。这些数据表明，scFOS 可增强反刍前小牛肉犊的生长性能，可能通过改变微生物发酵活动来实现。
