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6 日粮营养水平对6月龄陕北白绒山羊小肠主要消化酶的影响
Table 6 Effects of dietary nutrition levels on activity of small intestine main digestive enzymes of 6 month-old Shaanbei White Cashmere goats
项目
Item
组别 Group SEM P
P value
α-淀粉酶 α-Amylase (U/mg) 十二指肠Duodenum 0.09A 0.05B 0.08A 0.08A 0.01 <0.001
空肠Jejunum 0.09b 0.05c 0.10a 0.11a 0.01 0.01
回肠Ileum 0.08 0.07 0.06 0.06 0.01 0.40
脂肪酶Lipase (U/mg) 十二指肠Duodenum 9.95 8.45 9.93 7.82 0.62 0.63
空肠Jejunum 8.07 7.68 8.45 7.30 0.52 0.40
回肠Ileum 8.87 8.00 9.73 8.42 0.33 0.28
蔗糖酶Invertase (U/mg) 十二指肠Duodenum 21.95b 23.99a 19.93c 21.73b 0.52 0.02
空肠Jejunum 26.23 32.48 29.28 30.44 1.31 0.45
回肠Ileum 27.58 23.68 23.90 23.82 1.22 0.67
麦芽糖酶Maltase (U/mg) 十二指肠Duodenum 9.67 10.42 8.72 10.79 0.32 0.09
空肠Jejunum 10.73 12.24 9.12 10.31 0.68 0.50
回肠Ileum 7.66 14.13 12.35 11.52 1.00 0.07
糜蛋白酶 Chympotrypsin (U/mg) 十二指肠Duodenum 8.05b 6.52c 9.48a 10.89a 0.62 0.04
空肠Jejunum 10.74B 8.40C 15.50A 11.83B 0.88 0.01
回肠Ileum 6.89 6.29 5.83 5.71 0.30 0.57
胰蛋白酶Trypsin (U/mg) 十二指肠Duodenum 3.57b 3.60b 3.74a 3.80a 0.03 0.04
空肠Jejunum 3.65 3.79 3.79 3.81 0.04 0.07
回肠Ileum 3.52b 3.53b 3.82a 3.59b 0.07 0.03