天津农学院学报 ›› 2024, Vol. 31 ›› Issue (5): 46-51.doi: 10.19640/j.cnki.jtau.2024.05.007

• 研究与简报 • 上一篇    下一篇

饲粮中添加酶制剂和抗菌肽对藏鸡肠道内源酶活性的影响

王韩可1, 冯卫东2, 郑玉才1, 李志雄1, 倪建华3, 饶开晴1,通信作者   

  1. 1.西南民族大学 动物医学四川省高等学校重点实验室,四川 成都 610041;
    2.四川省甘孜藏族自治州畜牧业科学研究所,四川 甘孜 626000;
    3.乡城县藏咯咯农业开发有限公司,四川 甘孜 626700
  • 收稿日期:2024-03-01 出版日期:2024-10-31 发布日期:2024-11-05
  • 通讯作者: 饶开晴(1971—),女,副教授,博士,研究方向为动物生长调控。E-mail:wkxwzz6@163.com。
  • 作者简介:王韩可(1999—),女,硕士在读,研究方向为动物生长调控。E-mail:2929607821@qq.com。
  • 基金资助:
    西南民族大学研究生创新型科研项目(ZD2022809); 四川省科技计划项目(2021YFYZ0031,2023NSFSC0236)

Effects of dietary enzyme preparations and antimicrobial peptides on intestinal enzyme activities of Tibetan chickens

Wang Hanke1, Feng Weidong2, Zheng Yucai1, Li Zhixiong1, Ni Jianghua3, Rao Kaiqing1,Corresponding Author   

  1. 1. Sichuan Provincial Key Laboratory of Animal Medicine, Southwest Minzu University, Chengdu 610041, China;
    2. Sichuan Ganzi Tibetan Autonomous Prefecture Animal Husbandry Research Institute, Ganzi 626000, Sichuan Province, China;
    3. Xiangcheng County Zanggege Agricultural Development Co., Ltd., Ganzi 626700, Sichuan Province, China
  • Received:2024-03-01 Online:2024-10-31 Published:2024-11-05

摘要: 试验旨在探究饲粮中添加非淀粉多糖(Non-starch polysaccharides,NSP)复合酶制剂、抗菌肽及酶肽复合剂对21~63日龄藏鸡小肠内源酶活性的影响。选取体重相近的14日龄藏鸡240只,随机分为4组,即基础饲粮组(对照组)、酶制剂组、抗菌肽组和酶肽复合组。预饲7天,42、63日龄采集藏鸡十二指肠、空肠、回肠肠道内容物,检测各组食糜中α-淀粉酶、脂肪酶、胰蛋白酶及糜蛋白酶活性。结果显示,与对照组相比,在42日龄时,酶肽复合添加显著提高了藏鸡小肠α-淀粉酶、糜蛋白酶活性及十二指肠和回肠脂肪酶活性(P<0.05);酶制剂显著提高了藏鸡十二指肠、回肠α-淀粉酶活性和空肠、回肠脂肪酶活性(P<0.05);在63日龄时,酶肽复合添加显著提高了藏鸡小肠糜蛋白酶活性,显著提高了十二指肠和回肠α-淀粉酶活性及十二指肠、空肠脂肪酶活性(P<0.05);酶制剂显著提高了藏鸡小肠脂肪酶活性及十二指肠、回肠α-淀粉酶活性(P<0.05);而抗菌肽对藏鸡小肠内源酶活性无显著影响(P>0.05)。结果表明,酶制剂单独添加及酶制剂和抗菌肽联合添加均能显著增强藏鸡小肠内源酶活性,且联合添加效果优于酶制剂单独添加。

关键词: 酶制剂, 抗菌肽, 藏鸡, 肠道内源酶

Abstract: The purpose of this experiment was to investigate the effects of dietary supplementation of non-starch polysaccharide (NSP)complex enzyme preparation, antimicrobial peptide and enzyme peptide complex on intestinal enzyme activities of Tibetan chickens aged 21 to 63 days. A total of 240 14-day-old Tibetan chickens with similar body weight were randomly divided into 4 groups: basal diet group(control group), enzyme preparation group, antimicrobial peptide group and enzyme peptide complex group. Pre-feed for 7 days, the contents of duodenum, jejunum and ileum of Tibetan chickens at 42 and 63 days of age were collected, and the activities of α-amylase, lipase, trypsin and chymotrypsin in chymus of each group were detected. The results showed that, compared with the control group, the activities of α-amylase and chylin in small intestine, duodenal and ileal lipase in Tibetan chickens at 42 days of age were significantly increased in the enzyme-peptide complex group(P<0.05); The enzyme preparation significantly enhanced the α-amylase activity in both the duodenum and ileum, the lipase activity of jejunum and ileum in Tibetan chickens(P<0.05); At 63 days of age, the activities of chymotrypsin, α-amylase and duodenal and jejunal lipase in duodenum and ileum of Tibetan chickens were significantly increased with the supplementation of enzyme peptide complex(P<0.05); The enzyme preparation significantly increased the activity of lipase in small intestine, α-amylase activity in duodenum and ileum of Tibetan chickens(P<0.05); However, antimicrobial peptides had no significant effect on intestinal enzyme activity of Tibetan chickens(P>0.05). The results showed that the enzyme preparation alone and the combination of enzyme preparation and antimicrobial peptide could significantly enhance the enzyme activity in small intestine of Tibetan chickens, and the combined addition effect was better than that of enzyme preparation alone.

Key words: enzyme preparation, antibacterial peptide, Tibetan chicken, intestinal enzyme

中图分类号: