膨化与加酶玉米对断奶仔猪血液指标及胰腺和肠道淀粉酶活性的影响

选择96头断奶仔猪，随机分为4组，每组6个重复，每个重复4头仔猪，分别饲喂普通玉米、膨化玉米、普通玉米加酶及膨化玉米加酶为主要能量原料的饲料，研究了膨化与加酶玉米对断奶仔猪血液指标以及胰腺组织和小肠内容物淀粉酶活性的影响。结果表明，膨化和加酶处理玉米以及二者互作对断奶仔猪血清葡萄糖和尿素氮浓度均无显著影响。膨化和加酶处理均可显著提高仔猪断奶14d时十二指肠和空肠内容物的淀粉酶活力。对断奶28d时胰腺和小肠各段内容物淀粉酶活性均无影响；在整个试验期，未见到膨化和加酶处理的互作。

The Effect of Extrusion Processing and Enzyme Supplementation of Corn on Blood Parameters and Amylase Activity of Weaning Piglets

Ninety six weaning piglets were divided randomly into four groups, consisting of four repeats and fed with respectively the diets based corn, extruded corn, corn+amylase and extruded corn+amylase, to compare the influence of extrusion processing (EP)and amylase supplementation(AS) in diets on the blood parameters, pancreatic and intestinal amylase activity. The results showed there was no evident difference in blood sugar and urea nitrogen among treatment groups. On the 14th day after weaning, both EP and AS significantly increased the amylase activity in duodenum and jejunum. On the 28th day, neither EP nor AS influenced the pancreatic and intestinal amylase activity. No interaction between EP and AS was found over the whole period.