Patterson J A, Orban J I, Sutton A L, Richards G N
Department of Animal Sciences, Purdue University, West Lafayette, Indiana 47907, USA.
Poult Sci. 1997 Mar;76(3):497-500. doi: 10.1093/ps/76.3.497.
A series of kestose oligosaccharides have been produced from pyrolysis of sucrose and the effects of feeding these thermal kestoses on broiler performance and cecal microbial populations were evaluated. Eighty-four broiler chicks (day-old Hubbard x Hubbard) were fed either a nutritionally complete basal starter diet (control), the starter diet dressed with 8% of other sugars found in the thermal kestoses mixture (glucose, sucrose, and fructose), or the starter diet dressed with 10% crude thermal kestoses (2% kestoses, 8% other sugars) for a 4-wk period. Body weight and feed intake were measured weekly. After 4 wk the birds were killed, cecal contents were collected, and selected microbial populations were enumerated. Weight gains were 938, 968, and 989 g for control, other sugars, and thermal kestoses groups, respectively. There were no dietary effects on weight gain, feed conversion, or concentrations of total aerobic bacteria, coliforms, aerobically enumerated lactobacilli, total anaerobes, or clostridia. Cecal bifidobacterial concentrations were increased (P < 0.001) 24-fold in kestose-treated birds compared with controls, with bifidobacterial concentrations being 8.98, 9.09, and 10.36 log10 cfu/g cecal DM in birds fed the control, other sugars, and thermal kestoses diets, respectively. Anaerobically enumerated lactobacilli concentrations in kestose-treated birds were increased (P < 0.007) sevenfold compared with controls, with lactobacilli concentrations being 9.56, 9.53, and 10.36 log10 cfu/g cecal contents, respectively. Thermally produced kestoses altered intestinal bacterial populations in broilers and may have potential to enhance health and performance under the appropriate conditions.
通过蔗糖热解制备了一系列低聚蔗果三糖，并评估了饲喂这些热解低聚蔗果三糖对肉鸡生产性能和盲肠微生物种群的影响。84只1日龄哈伯德×哈伯德肉鸡雏鸡被分为3组，分别饲喂营养完全的基础开食料（对照组）、添加8%热解低聚蔗果三糖混合物中其他糖类（葡萄糖、蔗糖和果糖）的开食料，或添加10%粗热解低聚蔗果三糖（2%低聚蔗果三糖、8%其他糖类）的开食料，为期4周。每周测量体重和采食量。4周后宰杀肉鸡，收集盲肠内容物，并对选定的微生物种群进行计数。对照组、其他糖类组和热解低聚蔗果三糖组的体重增加分别为938、968和989克。日粮对体重增加、饲料转化率或总需氧菌、大肠杆菌、需氧计数的乳酸菌、总厌氧菌或梭菌的浓度没有影响。与对照组相比，低聚蔗果三糖处理组肉鸡的盲肠双歧杆菌浓度增加了24倍（P<0.001），饲喂对照组、其他糖类和热解低聚蔗果三糖日粮的肉鸡，其盲肠双歧杆菌浓度分别为8.98、9.09和10.36 log10 cfu/g盲肠干物质。与对照组相比，低聚蔗果三糖处理组肉鸡厌氧计数的乳酸菌浓度增加了7倍（P<0.007），乳酸菌浓度分别为9.56、9.53和10.36 log10 cfu/g盲肠内容物。热解产生的低聚蔗果三糖改变了肉鸡肠道细菌种群，在适当条件下可能具有增强健康和生产性能的潜力。
