纤维素复合酶对羔羊消化道组织结构的影响

为了探明纤维素复合酶提高羔羊饲料消化率的消化道组织学基础,选择刚出生且体重相近的波尔山羊公羔30只(20日龄开始自由采食优质苜蓿干草, 80日龄断奶)分为对照组和试验组(添加0.2%酶制剂),分别在2、3和4月龄每组各选体重相近的3只羔羊屠宰.结果表明,瘤胃乳头长度、宽度和单位面积瘤胃乳头表面积随月龄增加而增加,而单位面积乳头数随着月龄的增加而减少(P ＜ 0.01).酶制剂提高3、4月龄羔羊瘤胃乳头长度(P ＜ 0.01)、宽度(P ＞ 0.05)和单位面积瘤胃乳头表面积(P ＜ 0.01),减少单位面积乳头数(P ＜ 0.01).显著提高3月龄十二指肠肠绒毛的长度(P ＜ 0.05).在3、4月龄,酶制剂有增加小肠隐窝深度和黏膜厚度的趋势,但未达到显著水平(P ＞ 0.05).

Effect of Fibrolytic Enzymes on Gastrointestinal Morphological Structure in Kids

To investigate the effect of fibrolytic enzymes on gastrointestinal morphological structure in kids,thirty healthy Boer male kids were chosen at similar birth weight to divide into two groups,the control and the treatment group(adding 0.2% fibrolytic enzymes),and were weaned at 80-day old.Alfalfa hay were provided at 20-day old.Three kids chosen from each group were slaughtered at 2-,3-and 4-month old,respectively.The results indicated that the length(P < 0.01),width(P > 0.05) of rumjen papilla and surface area of rumen papilla per cm2(P < 0.01) were increased in the treatment group at the age of 3-and 4-month,respectively,compared with control group,however the number of rumen papilla per cm2 was decreased(P < 0.01).The fibrolytic enzymes increased significantly the villus length of duodenum at 3-month age(P < 0.05),and tended to increase the recess depth and mucous coat depth at the age of 3 and 4 month(P > 0.05).