添加胰多肽对肉鸭生产性能和消化机能的影响

胰多肽(pancreation polypeptide,PP)是胰脏胰多肽细胞分泌的一种多肽类激素。为了研究胰多肽对肉鸭生产性能和消化机能的影响,实验通过从肉鸭小肠中提取PP粗品,并对其进行纯度鉴定,之后添加到肉鸭体内,产生动物模型,以进行动物实验。具体方案如下:100只肉鸭被随机分为5组,每组20只。Ⅰ组为对照组,每天饲饮自来水。Ⅱ、Ⅲ组分别饲饮剂量为0.58mg/d的PP粗品及剂量为0.29mg/d的PP纯品。Ⅳ、Ⅴ组分别于每周颈部皮下注射0.24mg/只的PP粗品及0.12mg/只PP纯品。饲养称重,宰杀后取小肠,对其进行处理后用紫外吸收法进行消化酶活力测定。结果表明:PP能促进肉鸭机体生长发育,促进体重增长,对肉鸭生产性能产生影响;对肉鸭小肠蛋白酶、淀粉酶和脂肪酶的活力有影响,从而影响消化机能。

Study on the Effect of Pancreatic Polypeptide on the Performance and Digestion of Meat-type Duck

Pancreatic polypeptid e (PP)is a kind polypeptide hormone produced by pancreatic polypeptide cells in pancreas. In order to study the effects of PP on the performance and digest capability of meat-type duck,PP was extracted from the intestine of meat-type duck and made it into duck's body to produce the model,following the concentration determination. The research was conducted as following:100 chickens were randomly divided into 5 groups,20 every group,with Control Ⅰ,Treatment Ⅱ(Purification of PP sample,0.58mg/day),Treatment Ⅲ(fluid purification,0. 29mg/day),Treatment Ⅳ (Purification of PP sample,0.24mg/duck),Treatment Ⅴ(fluid purification,0.12mg/duck). After these feeding,all of them were weighed and samples were collected to get the enzyme activity from the duodenum. The results showed that PP could improve the development of meat-type duck and increase the body weight so as to have effects on the performance; PP had effects on the activity of protein kinase A,amylase and lipase,so it was concluded that PP could affect the capability of intestine digestion of meat-type duck.