小麦饲粮添加木聚糖酶对肉鹅小肠绒毛形态及食糜pH的影响

Influence of Xylanase Added to Wheat Based Diet on the Morphological Indices of Duodenum Villus and Chyme pH of Geese

选用1日龄健康肉用雏鹅108只,随机分为6组,分别饲喂玉米型饲粮、小麦型饲粮以及在小麦饲粮中添加不同浓度木聚糖酶的饲粮,每组设3个重复,每个重复6只鹅。制作十二指肠肠段小肠绒毛扫描电镜切片并观察其形态,测量小肠绒毛高度和宽度;测定十二指肠食糜pH值。结果表明:小麦饲粮中添加木聚糖酶均能使肉鹅小肠绒毛高度增加,但对绒毛宽度改善不大;各加酶处理组的食糜pH值均较小麦对照组有所上升,但低于玉米组水平。

One way random experiment was designed to investigate the influence of different concentration of xylanase on the morphological indices of duodenum villus and chyme pH of geese. One hundred and eight one-day-old goslings （mixed sex） were randomly divided into 6 groups,each containing 3 replications and each replication containing 6 goslings. Group 1 were fed with corn based diet, and group 2 to group 6 with wheat based diet without enzyme, 0.05%, 0. 1%, 0.2%, 0. 3% xylanase, respectively. The results showed that the villus height were increased in xylanase groups , especially in 0. 1%and 0. 2% xylanase groups（P〈0.05）, but there was no significant difference in the villus width（P〉0.05）. The pH of chyme in xylanase groups were higher than group 2,and lower than groupl. Compared with group 2, the chyme pH of group 6 improved 2.95 % （P〉0.05）.