›› 2015, Vol. 42 ›› Issue (11): 2961-2968.doi: 10.16431/j.cnki.1671-7236.2015.11.021

• 动物营养与饲料科学 • 上一篇    下一篇

精料型日粮条件下添喂气溶胶OT对小尾寒羊前胃和小肠消化吸收的影响

李昊, 雒秋江, 潘榕, 周封文, 尼加提·克以木   

  1. 新疆农业大学动物科学学院, 乌鲁木齐 830052
  • 收稿日期:2015-03-31 出版日期:2015-11-20 发布日期:2015-11-26
  • 通讯作者: 雒秋江 E-mail:qjl@xjau.edu.cn
  • 作者简介:李昊(1983-),男,吉林长春人,博士,研究方向:反刍动物营养,E-mail:lh_0918@163.com
  • 基金资助:
    新疆维吾尔自治区科技厅面上项目(20131028235)

The Effect of Supplement of Aerosol OT on the Digestion and Absorption in the Former Stomach and Small Intestine of Small-tail Han Sheep Fed with Concentrate-type Diet

LI Hao, LUO Qiu-jiang, PAN Rong, ZHOU Feng-wen, Nijiati·keyimu   

  1. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2015-03-31 Online:2015-11-20 Published:2015-11-26

摘要: 试验选取6只1~1.5岁,体重(55.3±3.8)kg,装置永久性十二指肠近端T型瘘管和回肠末端T型瘘管的小尾寒羊公羊,收集十二指肠和回肠食糜,通过自身对照试验,研究在精料型(玉米秸秆占30%)日粮条件下添喂气溶胶OT(0.8 g/kg日粮)对小尾寒羊前胃和小肠消化吸收的影响。结果表明,添喂气溶胶OT使小尾寒羊干物质自由采食量增加23.6%(P<0.01)。前胃干物质、有机物、粗蛋白质和纤维素的消化量分别增加39.2%(P<0.01)、37.3%(P<0.01)、21.8%(P<0.01)和13.4%(P<0.01);到达小肠的干物质、有机物、粗蛋白质、微生物蛋白质和过瘤胃蛋白质分别增加8.9%(P<0.01)、8.8%(P<0.01)、21.3%(P<0.01)、29.3%(P<0.01)和13.1%(P<0.01);总氨基酸、赖氨酸、蛋氨酸、苏氨酸、缬氨酸和苯丙氨酸分别增加45.6%(P<0.01)、62.7%(P<0.01)、40.8%(P<0.01)、32.8%(P<0.01)、32.0%(P<0.01)和32.3%(P<0.01)。小肠干物质、有机物、粗蛋白质、钙和磷消化吸收量分别增加28.7%(P<0.01)、29.8%(P<0.01)、28.7%(P<0.01)、26.6%(P<0.01)和13.1%(P<0.01);小肠总氨基酸、赖氨酸、蛋氨酸、异亮氨酸、精氨酸和组氨酸消化吸收量分别增加37.6%(P<0.01)、56.9%(P<0.01)、28.6%(P<0.01)、40.9%(P<0.01)、41.5%(P<0.01)和51.7%(P<0.01)。由以上得出结论,添喂气溶胶OT可以提高小尾寒羊自由采食量,增加前胃和小肠营养物质消化吸收量,显著改善宿主的营养供应。

关键词: 气溶胶OT; 小尾寒羊; 前胃; 小肠; 消化

Abstract: Six adult Small-tail Han rams at the age of 1 to 1.5 years,with the average body weight of 55.3 kg±3.8 kg,fitted with the permanent duodenum and ileum T-type canula,were fed with concentrate-type diet(cornstalk as 30%),collecting the chyme of the duodenum and ileum to study the effect of supplement of aerosol OT(0.8 g/kg of diet (as DM basis))on the digestion and absorption in the former stomach and small intestine by self-control experimental design.The results showed that by supplementing of aerosol OT the voluntary intake of dry matter was increased by 23.6%(P<0.01),the digested DM,OM,CP and cellulose in former stomach were increased by 39.2%(P<0.01),37.3%(P<0.01),21.8%(P<0.01) and 13.4%(P<0.01) respectively;DM,OM,CP,microbial protein and by-pass protein arrived at small intestine were increased by 8.9%(P<0.01),8.8%(P<0.01),21.3%(P<0.01),29.3%(P<0.01) and 13.1%(P<0.01),respectively;The total amino acids,lysine,methionine,threonine,valine and phenylalanine arrived at small intestine were increased by 45.6%(P<0.01),62.7%(P<0.01),40.8%(P<0.01),32.8%(P<0.01),32.0%(P<0.01) and 32.3%(P<0.01),respectively.DM,OM,CP,calcium and phosphorous absorbed in small intestine were increased by 28.7%(P<0.01),29.8%(P<0.01),28.7%(P<0.01),26.6%(P<0.01) and 13.1%(P<0.01),respectively;The total amino acids,lysine,methionine,isoleucine,arginine and histidine absorbed in small intestine were increased by 37.6%(P<0.01),56.9%(P<0.01),28.6%(P<0.01),40.9%(P<0.01),41.5%(P<0.01) and 51.7%(P<0.01),respectively.It was concluded that the supplement of aerosol OT could increase the voluntary intake and the digestion and absorption in forestomach and small intestine,therefore significantly modify the nutrient supply for sheep.

Key words: aerosol OT; Small-tail Han sheep; former stomach; small intestine; digestion

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