畜牧兽医学报 ›› 2009, Vol. 40 ›› Issue (5): 676-682.

• 动物营养 • 上一篇    下一篇

免疫应激对仔猪肠道发育及胰高血糖素样肽-2分泌的影响

车炼强, 张克英*,丁雪梅, 陈代文   

  1. 四川农业大学动物营养研究所 教育部动物抗病营养重点实验室,雅安 625014
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-05-25 发布日期:2009-05-25
  • 通讯作者: 张克英

Effect of Immune Challenge on Gut Development and GLP-2 Secretion of Piglets

CHE Lian-qiang, ZHANG Ke-ying*, DING Xue-mei,CHEN Dai-wen   

  1. Key Laboratory for Animal DiseaseResistance Nutrition of China Ministry of Education,Institute of Animal Nutrition,Sichuan Agricultural University, Ya′an 625014,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-05-25 Published:2009-05-25

摘要: 通过2个试验研究了断奶仔猪胰高血糖素样肽-2(GLP-2)分泌规律和免疫应激对断奶仔猪肠道发育及GLP-2分泌的影响。试验1研究表明,仔猪断奶厌食降低了GLP-2的分泌,而随着采食量的恢复GLP-2分泌增加。试验2研究发现,免疫应激导致仔猪采食量急剧下降(P<0.01),并使全身免疫系统活化;同时,试验前期(0~4 d)GLP-2分泌受免疫应激的影响而显著下降(P<0.05),并影响了仔猪肠道形态学(绒毛高度/隐窝深度)和肠黏膜乳糖酶、蔗糖酶的活性。免疫应激条件下仔猪肠道黏膜杯状细胞数量也有下降的趋势。结果表明,免疫应激造成仔猪采食量下降和全身免疫系统活化,并引起GLP-2分泌不足,从而影响肠道发育。

关键词: 断奶仔猪, 免疫应激, 胰高血糖素样肽-2, 肠道发育, 采食量

Abstract: Two trials were conducted to study Glucagon-like peptide 2 secretion in postweaning piglets and the effect of immune challenge on gut development and GLP-2 level. The first trial indicated that the GLP-2 level was reduced by the weaning anorexia, and then tended to recover with the increased feed intake. The second trial showed that the immune system was activated by the immune challenge, the feed intake (P<0.01), GLP-2 level (P<0.05), the villus height/crypt depth (P<0.05) were also decreased, while the mucosa lactase and sucrase activity, goblet cells tended to be decreased. The results indicate that immune challenge resulted in the anorexia and immune system activation, which trigger the decreased GLP-2 that may influence gut development.

Key words: weaned piglet, immune challenge, Glucagon-like peptide 2, gut development, feed intake