陈化早籼糙米对仔猪小肠黏膜二糖酶及生产性能的影响

Effect of Aged Unpolished Early Hsien Rice Diets on Mucosa Disaccharidase of Small Intestine and Production Performance of Piglets

本试验研究了在经膨化处理的陈化早籼糙米日粮中添加外源α 淀粉酶和糖化酶对断奶仔猪小肠黏膜二糖酶、血液生化指标和生产性能的影响.试验为日粮不同加工处理(膨化、不膨化)和加外源酶(添加、不添加)两因子设计,共 4 个处理.结果表明,试验猪的生产性能总体趋势是非膨化组好于膨化组,非膨化加酶组的日增重比膨化加酶组在第 14 天和第 28 天分别高出 23 66%和16 83%,料肉质量比降低了16 88%和7 36%;膨化和添加外源酶显著提高了断奶仔猪试验第 14天十二指肠中麦芽糖酶的活性,然而膨化显著降低了断奶仔猪试验第 28 天空肠中乳糖酶、麦芽糖酶、异麦芽糖酶和蔗糖酶的活性,添加外源酶显著提高了断奶仔猪试验第 28 天空肠中乳糖酶和麦芽糖酶的活性.试验结果表明,对断奶仔猪高糊化度膨化陈化糙米是没有必要的.

The extraneous sources α-starch enzyme and saccharifying enzyme were added to extruded aged unpolished early hsien rice diets for weaned piglets. The effects on mucosa disaccharidase of small intestine, biochemical parameter, production performance of weaned piglets were studied. The experiment was designed with two factors, one was processing methods (extrusion or not), and another was whether addition of enzymes is needed. The results indicated that the production performance trend of the extruded diets group was better than the non-extruded diets group in the general. Gain of body weight of the non-extruded diets group was 23.66% and 16.83% higher than that of the extruded diets group in 14^(th) and 28^(th) day, and feed meat ratio decreased 16.88% and 7.36% in 14^(th) and 28^(th) day,compared with that of the extruded diets group. Extrusion and adding extraneous sources enzymes increased the activity of maltase in duodenum evidently in 14^(th) day, but decreased the activities of lactase, maltase, isomaltase and invertase in empty intestine evidently in 28^(th) day. Adding extraneous sources enzymes increased the activities of lactase and maltase in empty intestine of warned piglets in 28^(th) day evidently. The experiment results indicated that it was not necessary to extrude the aged unpolished rice with high gelatinization degree for weaned piglets.