Zhao P Y, Wang J P, Kim I H
Department of Animal Resource and Science, Dankook University, Cheonan, Choongnam 330-714, South Korea.
J Anim Sci. 2013 Nov;91(11):5287-93. doi: 10.2527/jas.2012-5464. Epub 2013 Sep 17.
A total of 720 1-d-old male Ross broilers (BW of 48.0±0.3 g) were used to evaluate the effects of dietary levan fructan supplementation on growth performance, meat quality, relative organ weight, cecal microflora, and excreta noxious gas emission in broilers. This experiment lasted 31 d. Broilers were randomly allotted to 1 of 3 dietary treatments: 1) CON, basal diet, 2) CON+0.25% fructan (FC1), and 3) CON+0.50% fructan (FC2). Each treatment contained 16 pens with 15 chicks per pen. Broilers on levan fructan supplementation treatments (FC1+FC2) had a lower (P=0.005 for d 15 to 31) ADFI and greater (P=0.005 for d 15 to 31 and P=0.022 for d 1 to 31) G:F than those on the CON. A decreased (P=0.031) relative spleen weight was observed with levan fructan supplementation treatments compared with the CON. Cecal E. coli and C. perfringens concentrations in levan fructan treatments were decreased, while cecal Lactobacillus, as well as Bifidobacteria, concentrations in levan fructan treatments were increased compared with the CON. However, excreta NH3 concentrations were decreased (P=0.013) in levan fructan treatments compared with the CON. In conclusion, fructan supplementation improved later stage growth performance, increased cecal Lactobacillus and Bifidobacteria concentrations, and decreased cecal E. coli and C. perfringens concentrations, as well as excreta NH3 concentrations, in broilers.
总共720只1日龄的雄性罗斯肉鸡（体重48.0±0.3克）用于评估日粮中添加低聚果糖对肉鸡生长性能、肉质、相对器官重量、盲肠微生物群和排泄物有害气体排放的影响。本试验持续31天。肉鸡被随机分配到3种日粮处理中的1种：1）对照组，基础日粮；2）对照组+0.25%低聚果糖（FC1）；3）对照组+0.50%低聚果糖（FC2）。每个处理包含16个栏，每栏15只鸡。与对照组相比，添加低聚果糖处理组（FC1+FC2）的肉鸡在第15至31天的平均日采食量较低（P=0.005），而在第15至31天的料重比更高（P=0.005），在第1至31天也更高（P=0.022）。与对照组相比，添加低聚果糖处理组的相对脾脏重量降低（P=0.031）。与对照组相比，低聚果糖处理组盲肠中的大肠杆菌和产气荚膜梭菌浓度降低，而盲肠中的乳酸杆菌以及双歧杆菌浓度增加。然而，与对照组相比，低聚果糖处理组的排泄物氨气浓度降低（P=0.013）。总之，添加低聚果糖改善了肉鸡后期的生长性能，增加了盲肠中乳酸杆菌和双歧杆菌的浓度，降低了盲肠中大肠杆菌和产气荚膜梭菌的浓度以及排泄物氨气浓度。
