膨化陈糙米及添加淀粉酶对断奶仔猪消化及生产性能的影响

本试验研究了陈糙米日粮是否膨化和是否添加外源淀粉酶两个因素,对26日龄断奶仔猪小肠黏膜二糖酶活性、血液葡萄糖和尿素氮含量、生产性能的影响.试验28d的结果表明,陈糙米日粮经膨化后能提高断奶仔猪十二指肠黏膜中二糖酶的活性,但降低了空肠黏膜中二糖酶的活性,采食膨化料的仔猪生产性能低于未膨化料的,但差异不显著.添加外源酶可以提高十二指肠和空肠黏膜中部分二糖酶的活性,但对仔猪的生产性能并未有显著改善.膨化和加酶及其交互作用对仔猪血清中葡萄糖和尿素氮含量并无显著影响（P＞0.1）.

Effect of Extrusion of Aged Unpolished Rice and Adding Starch Enzyme on Digestion and Production Performance of Weaned Piglets

The experiments studied the effects of two factors extrusion and adding starch enzymes in aged unpolished rice diets on mucosa disaccharidase of small intestine, the contents of glucose and urea nitrogen in blood, production performance of weaned piglets. The results of 28d feed experiments indicated that extrusion of aged unpolished rice diet improved the activities of mucosa disaccharidase of duodenum, but decreased the activities in jejunum. Production performance of piglets fed with extruded diet was lower then with unextruded one, but the difference was not conspicuous. Adding extraneous sources enzymes increased the activities of some mucosa disaccharidase in duodenum and jejunum, but it did not improve the production performance of piglets significantly. Extrusion, adding starch enzymes and their interaction also had no obvious effects on the contents of glucose and urea nitrogen in blood (P > 0.1).