Orban J I, Patterson J A, Sutton A L, Richards G N
Department of Animal Sciences, Purdue University, West Lafayette, Indiana 47907, USA.
Poult Sci. 1997 Mar;76(3):482-90. doi: 10.1093/ps/76.3.482.
Two experiments were conducted to determine the effect of sucrose thermal oligosaccharide caramel (STOC) and dietary vitamin-mineral (V/M) level on growth performance and intestinal microflora of broiler chickens. In Experiment 1, Peterson x Arbor Acres male broilers (n = 384) were randomly allocated into four groups that were fed either the control diet or diets containing the antibiotic virginiamycin (11 mg/kg), 3.7% STOC or 7.5% STOC for 4 wk at brooding temperatures of 32 to 29.7 C. Weight gains for broilers in Experiment 1 were greater (P < 0.001) for birds fed STOC diets, with weight gains of 763, 822, 1,124, and 1,080 g for birds on the control, antibiotic, 3.7% STOC, and 7.5% STOC diets, respectively. Feed intake and feed conversion by birds fed STOC diets were also significantly improved. Cecal bifidobacterial numbers were increased (P < 0.03) over the control diet with numbers being 5.98, 6.99, 7.47, and 7.39 log10 cfu/g cecal DM, respectively. In Experiment 2, Peterson x Hubbard male broilers (n = 384) were used in a 2 x 2 x 2 factorial arrangement with two levels of V/M premix (0.5 or 1% of the diet), two levels of STOC (0 or 3.5% of the diet), and two brooding temperatures, normal (32 to 23.6 C) or high (32 to 29.7 C) for 4 wk. Feeding the STOC diet improved (P < 0.05) weight gain, feed intake, and feed conversion of broilers. The effect of STOC on animal performance was less evident when broilers were fed twice the NRC recommended levels of V/M. Feeding the STOC diets resulted in a significantly greater increase in weight gain at high brooding temperatures than at normal brooding temperatures. There was also a reduction (P < 0.05) in numbers of total aerobes and coliforms in the ceca of birds fed diets containing STOC. Feeding STOC has potential to improve growth performance of broiler chickens.
进行了两项试验，以确定蔗糖热解低聚糖焦糖（STOC）和日粮维生素-矿物质（V/M）水平对肉鸡生长性能和肠道微生物区系的影响。在试验1中，将彼得森×艾拔益加雄性肉鸡（n = 384）随机分为四组，分别饲喂对照日粮或含抗生素维吉尼亚霉素（11 mg/kg）、3.7% STOC或7.5% STOC的日粮，在32至29.7℃的育雏温度下饲养4周。试验1中，饲喂STOC日粮的肉鸡体重增加更多（P < 0.001），对照、抗生素、3.7% STOC和7.5% STOC日粮组肉鸡的体重增加分别为763、822、1124和1080 g。饲喂STOC日粮的肉鸡采食量和饲料转化率也显著提高。盲肠双歧杆菌数量比对照日粮有所增加（P < 0.03），分别为5.98、6.99、7.47和7.39 log10 cfu/g盲肠干物质。在试验2中，彼得森×哈伯德雄性肉鸡（n = 384）采用2×2×2析因设计，有两个V/M预混料水平（日粮的0.5%或1%）、两个STOC水平（日粮的0或3.5%）以及两个育雏温度，正常温度（32至23.6℃）或高温（32至29.7℃），饲养4周。饲喂STOC日粮可提高（P < 0.05）肉鸡的体重增加、采食量和饲料转化率。当肉鸡饲喂两倍于NRC推荐水平的V/M时，STOC对动物生产性能的影响不太明显。与正常育雏温度相比，在高温育雏温度下饲喂STOC日粮使肉鸡体重增加显著更大。饲喂含STOC日粮的肉鸡盲肠中需氧菌总数和大肠菌群数量也有所减少（P < 0.05）。饲喂STOC有提高肉鸡生长性能的潜力。
