【摘要】 选取9窝(共90头)新生"杜×长×大"三元杂交仔猪,随机分为3组,每组3窝(共30头),14日龄时分别饲喂基础日粮、基础日粮+120 mg/kg半胱胺和基础日粮+200 mg/kg半胱胺,试验期45 d。在45日龄时,每组随机选取6头仔猪,屠宰后分别迅速刮取十二指肠中段、空肠近、远段、回肠中段内容物,冷冻保存,测定消化酶活性。结果表明,日粮中添加120 mg/kg半胱胺能显著提高仔猪体质量、平均日增重,改善料重比;添加120 mg/kg半胱胺和200 mg/kg半胱胺均能显著提高仔猪十二指肠、空肠近、远端和回肠内容物中的脂肪酶、胰蛋白酶活性以及回肠中淀粉酶活性。试验提示,日粮中添加适量半胱胺可以显著提高仔猪小肠中消化酶活力,改善仔猪生长性能。更多还原

【Abstract】 This experiment was carried out to study the effect of cysteamine(CS) on growth performance and digestive enzyme activities in alvine contents of piglets.9 litters of newborn"Duroc×Landrace×Yorkshire"crossbred piglets(90 piglets)were randomly divided into 3 groups of 30 piglets each.At 14 days of age,piglets were fed on basal diet,basal diet+120 mg/kg CS and basal diet+200 mg/kg CS,respectively.The trial was conducted for 45 d.Six piglets from each group were slaughtered at 45 days of age,and contents of duodenum,proximal jejunum,distal jejunum and ileum were taken for testing digestive enzyme activities.The results showed that basal diet supplemented with 120 mg/kg CS increased significantly the weight and average daily gain,decreased the ratio of feed to gain in piglets.Both basal diet supplemented with 120 mg/kg CS and 200 mg/kg CS increased significantly the trypsin and lipase activities in contents of duodenum,proximal jejunum,distal jejunum,ileum and amylase activity in contents of ileum.It indicates that the growth performance and digestive enzyme activities in alvine contents of piglets can be promoted by feeding the diet supplemented with CS.更多还原