中国畜牧兽医

• 动物营养与饲料科学 • 上一篇    下一篇

不同加工处理日粮对绵羊瘤胃挥发性脂肪酸的影响

郑琛1, 郝正里1, 李发弟1,2, 郭艳丽1   

  1. 1. 甘肃农业大学动物科学技术学院,甘肃兰州 730070;
    2. 甘肃省饲料工程技术研究中心,甘肃兰州 730070
  • 收稿日期:2012-04-05 出版日期:2012-09-20 发布日期:2012-09-18
  • 通讯作者: 李发弟(1963-),男,甘肃人,博士生导师,教授,研究方向:羊生产学。E-mail:lifd@gsau.edu.cn E-mail:lifd@gsau.edu.cn
  • 作者简介:郑琛(1978-),男,陕西人,博士,讲师,研究方向:反刍动物营养。
  • 基金资助:

    现代农业产业技术体系建设专项资金(CARS-39)。

Effect of Different Processed Diets on the Concentration of Volatile Fatty Acid in Sheep Rumen

ZHENG Chen1, HAO Zheng-li1, LI Fa-di1,2, GUO Yan-li1   

  1. 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Gansu Feed Engineering Technology Research Center, Lanzhou 730070, China
  • Received:2012-04-05 Online:2012-09-20 Published:2012-09-18

摘要: 选用3只健康并安装永久性瘤胃瘘管的杂种羯羊,平均体重为24 kg,采用3×3无重复拉丁方试验设计,用3种不同日粮(全混合颗粒料日粮、粉碎精料+铡短粗料日粮和未粉碎精料+铡短粗料日粮)来研究对绵羊瘤胃挥发性脂肪酸(VFA)浓度的影响。结果表明,采食未粉碎精料+铡短粗料日粮绵羊的瘤胃总挥发性脂肪酸(TVFA)浓度显著高于采食全混合颗粒料日粮绵羊(P<0.05),采食未粉碎精料+铡短粗料及粉碎精料+铡短粗料日粮的绵羊瘤胃丙酸摩尔比显著或极显著高于采食全混合颗粒料日粮绵羊(P<0.05,P<0.01),而(戊酸+异戊酸)摩尔比极显著低于全混合颗粒料日粮绵羊(P<0.01),乙酸/丙酸显著或极显著低于采食全混合颗粒料日粮绵羊(P<0.05,P<0.01)。因此,用粉碎精料+铡短粗料或未粉碎精料+铡短粗料日粮饲喂绵羊能改善绵羊瘤胃发酵类型。

关键词: 加工处理; 绵羊; 瘤胃; 挥发性脂肪酸

Abstract: Three crossbred wethers fitted with permanent rumen fistula were chosen to measure the effect of different processed diets on parameters of the concentration of volatile fatty acid in sheep rumen. A 3×3 Latin square experiment design was adopted and the sheep were allotted in one of three diet-treatments, which were complete diet pellet, ground concentrate and cut roughage, and unground concentrate and cut roughage. The results showed that the concentration of TVFA of sheep fed unground concentrate and cut roughage was significantly higher than that of sheep fed complete diet pellet(P<0.05). The molar ratio of propionate of sheep fed ground concentrate and cut roughage as well as unground concentrate and cut roughage were higher than that of sheep fed complete diet pellet(P<0.05,P<0.01),but the molar ratio of (valerate and isovalerate) was significantly lower(P<0.01),and acetate/propionate was lower than that of sheep fed complete diet pellet significantly(P<0.05,P<0.01). It suggested that the diets type of ground concentrate and cut roughage or unground concentrate and cut roughage could improve the type of fermenting in sheep.

Key words: processed; sheep; rumen; volatile fatty acid

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