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3 断奶日龄对陕北白绒山羊断奶羔羊小肠形态发育的影响

Table 3 Effects of weaning age on the development of intestinal morphology of weaned lambs in Shaanbei White Cashmere goats

项目 Item 组别 Group SEM P值 P value I（90 d） II（75 d） III（60 d） 十二指肠 Duodenum 绒毛高度Villus height (μm) 563.93B 724.58A 543.18B 24.03 ＜0.001 绒毛宽度Villus width (μm) 70.72b 80.82a 83.51a 2.20 0.046 隐窝深度Crypt depth (μm) 259.20B 372.88A 275.55B 13.85 ＜0.001 肌层厚度Muscular thickness 115.90C 182.14B 242.20A 13.79 ＜0.001 绒毛高度/隐窝深度V/C 2.17 1.95 1.97 0.05 0.11 表面积Surface area (μm2) 39813.37B 58593.92A 45237.72B 2430.22 ＜0.001 空肠Ileum 绒毛高度Villus height (μm) 557.55 531.58 582.76 14.11 0.33 绒毛宽度Villus width (μm) 80.07 83.71 90.19 3.07 0.43 隐窝深度Crypt depth (μm) 340.08 309.74 316.58 8.78 0.38 肌层厚度Muscular thickness (μm) 173.49 205.65 236.60 11.85 0.06 绒毛高度/隐窝深度V/C 1.64 1.72 1.86 0.05 0.22 表面积 Surface area (μm2) 44467.55b 44883.99b 52444.75a 2133.90 0.03 回肠Jejunum 绒毛高度Villus height (μm) 664.13 679.51 653.89 20.69 0.88 绒毛宽度Villus width (μm) 88.82b 105.84a 104.77a 3.01 0.04 隐窝深度Crypt depth (μm) 384.75 343.51 367.68 17.15 0.66 肌层厚度Muscular thickness (μm) 202.18 196.71 170.01 13.37 0.60 绒毛高度/隐窝深度V/C 1.73 2.11 1.78 0.08 0.11 表面积Surface area (μm2) 59145.10 73566.13 68485.03 3867.20 0.36