断奶日龄和日粮营养水平对陕北白绒山羊小肠 形态发育和消化酶活性的影响

曲星梅,薛复来,黄晓瑜,张宇,邢晓楠,张恩平

Effects of Weaning Age and Dietary Nutritional Levels on Intestinal Morphology and Activity of Digestive Enzymes in 6-Month-Old Shaanbei White Cashmere Goats

XingMei QU,FuLai XUE,XiaoYu HUANG,Yu ZHANG,XiaoNan XING,EnPing ZHANG

表5 日粮营养水平对6月龄陕北白绒山羊小肠形态发育的影响

Table 5 Effects of dietary nutrition levels on the development of intestinal morphology of 6 month-old Shaanbei White Cashmere goats

项目 Item 组别 Group SEM P值 P value III (100%) IV (85%) V (115%) VI (130%) 十二指肠 Duodenum 绒毛高度Villus height (μm) 543.18B 498.69B 643.52A 713.82A 20.75 ＜0.001 绒毛宽度Villus width (μm) 83.51B 70.43C 93.83A 87.35A 2.43 0.001 隐窝深度Crypt depth (μm) 275.55B 276.85B 250.40B 333.78A 9.05 0.002 肌层厚度Muscular thickness (μm) 242.20B 198.11C 301.16A 272.10A 10.76 0.001 绒毛高度/隐窝深度V/C 1.97BC 1.81C 2.60A 2.15B 0.07 ＜0.001 表面积Surface area (μm2) 45237.72B 35137.95C 60451.23A 62454.37A 2809.58 ＜0.001 空肠Ileum 绒毛高度Villus height (μm) 582.76B 515.79C 621.48A 674.15A 14.32 ＜0.001 绒毛宽度Villus width (μm) 90.19 89.94 91.80 100.43 2.34 0.372 隐窝深度Crypt depth (μm) 316.58a 294.78a 285.84a 251.06b 7.17 0.011 肌层厚度Muscular thickness (μm) 236.60B 183.05C 243.51A 255.68A 7.93 ＜0.001 绒毛高度/隐窝深度V/C 1.86C 1.75C 2.18B 2.69A 0.09 ＜0.001 表面积μm2 Surface area (μm2) 52444.75B 46426.49C 57020.80AB 67775.10A 2244.59 0.002 回肠Jejunum 绒毛高度Villus height (μm) 653.89B 617.89B 752.46A 781.61A 14.60 ＜0.001 绒毛宽度Villus width (μm) 104.77B 90.79C 107.30B 188.25A 8.30 ＜0.001 隐窝深度Crypt depth (μm) 367.68A 339.43B 330.03B 300.12C 7.96 0.014 肌层厚度Muscular thickness (μm) 170.01C 156.60C 323.53A 214.46B 13.51 ＜0.001 绒毛高度/隐窝深度V/C 1.78B 1.82B 2.34A 2.63A 0.08 ＜0.001 表面积Surface area (μm2) 68485.03C 56119.59D 80726.33B 147524.51A 7560.46 ＜0.001