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4 断奶日龄对6月龄陕北白绒山羊小肠主要消化酶活性的影响
Table 4 Effects of weaning age on activity of intestinal digestive enzymes of 6 month-old Shaanbei White Cashmere goats
项目
Item
组别 Group SEM P
P value
I(90 d) II(75 d) III(60 d)
α-淀粉酶 α-Amylase (U/mg) 十二指肠Duodenum 0.11a 0.07c 0.09b 0.01 0.02
空肠Jejunum 0.14a 0.08b 0.09b 0.01 0.03
回肠Ileum 0.06 0.07 0.08 0.01 0.10
脂肪酶 Lipase (U/mg) 十二指肠Duodenum 9.17b 8.71b 9.95a 0.23 0.05
空肠Jejunum 7.82 8.39 8.07 0.31 0.21
回肠Ileum 7.47B 7.23B 8.87A 1.33 0.01
蔗糖酶 Invertase (U/mg) 十二指肠Duodenum 23.05 22.26 21.95 0.45 0.64
空肠Jejunum 31.01 28.81 26.23 1.50 0.49
回肠Ileum 24.58 23.43 27.58 1.54 0.59
麦芽糖酶 Maltase (U/mg) 十二指肠Duodenum 8.96 8.77 9.67 0.31 0.52
空肠Jejunum 13.63 9.46 10.73 1.02 0.26
回肠Ileum 13.39 8.14 7.66 1.32 0.12
糜蛋白酶 Chympotrypsin (U/mg) 十二指肠Duodenum 8.53 8.87 8.05 0.57 0.06
空肠Jejunum 9.51b 9.14b 10.74a 0.31 0.03
回肠Ileum 5.34c 6.49b 6.89a 0.26 0.02
胰蛋白酶 Trypsin (U/mg) 十二指肠Duodenum 3.80 3.63 3.57 0.03 0.06
空肠Jejunum 3.61B 4.19A 3.65B 0.11 0.01
回肠Ileum 3.51 3.57 3.52 0.02 0.40