超早期断奶应激对仔猪消化酶活性的影响初报

试验选用两窝１４ 日龄杜×（ 大×长） 三元杂交商品猪，每窝１０ 头，每窝仔猪按体重平均分为断奶处理组和哺乳对照组，每组两个重复（ 栏） ，每栏５ 头猪。分别于断奶后第０（１４ 日龄） 、２ 、４ 、６ 、９ 天从每栏内随机抽取一头猪，屠宰后取胰腺和空肠内容物样品，测定胰蛋白酶、淀粉酶及脂肪酶活性。试验结果表明，断奶应激不同程度地降低了仔猪胰腺和空肠内容物中胰蛋白酶、淀粉酶和脂肪酶活性。随着断奶后时间的推移和采食量的增加，断奶仔猪空肠内容物中胰蛋白酶、脂肪酶以及胰腺中淀粉酶活性得以恢复并呈上升趋势。

Effect of Stress From Early Weaning Pig on Its Digestive Enzymes Activity

The trial was undertaken with two litters of 14-day-old Yorkshire×Duroc×Landrace piglets.The pigs of each litter were randomly divided into weanling group and suckling group.Each group had two replicates(pen).Each pen had five piglets.One pig was randomly chosen from each pen and slaughtered to obtain the samples of pancreas and jejunal digesta on the O,2\+\{nd\},4\+\{th\},6\+\{th\},9\+\{th\}day postweaning respectively.The activities of trypsin,amylase and lipase were measured.The results showed that the activities of trypsin,amylase and lipase in pancreas and jejunal digesta were lowered in different degree by weaning stressors.With the postweaning time going and the incerase of feed intake of piglets ,the activities of trypsin & lipase in jejunal digesta and the activity of amylase in pancreas were recovered and had the increasing trend.