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Effects of Highland Barley Straw on Body Weight Gain and Immune Indexes in Growing Tibetan Sheep

  • ZHOU Xiaoling ,
  • YAN Qiongxian ,
  • TONG Haiou ,
  • ZHOU Chuanshe ,
  • TANG Shaoxun ,
  • HAN Xuefeng ,
  • TAN Zhiliang
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  • 1. Key Laboratory for Agro-Ecological Processes in Subtropical Region, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
    2. University of Chinese Academy of Science, Beijing 100049, China;
    3. College of Animal Science, Tarim University, Alaer 843300, China;
    4. Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha 410128, China;
    5. Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China

Received date: 2016-04-25

  Online published: 2016-10-17

Abstract

Highland barley straw was used to substitute oat hay for the study on the effects on body weight gain and immune indexes in growing Tibetan sheep. Eighteen healthy 4- to 5-month old Valley Tibetan sheep were selected and randomly divided into 2 groups, which were highland barley group (highland barley straw 300 g/d+concentrate 300 g/d) and oat group (oat hay 300 g/d+concentrate 300 g/d). Test period lasted for 4 weeks, the 1st week was pre-test period, the 2nd to 4th weeks were formal test period. After formal test period, according to the principle of half-and-half of ewe and ram, six sheep per group were selected to slaughter and sample. The results showed as follows:body weight, daily gain, spleen weight and spleen index in Tibetan sheep between highland barley group and oat group were not significantly different (P>0.05); serum immunoglobulin (Ig) G, IgA, IgM and lysozyme contents acid, and phosphatase activity showed no significant difference between two groups (P>0.05), but lysozyme content in highland barley group had a trend to be improved compared with that in oat group (P=0.083); interleukin (IL)-2, IL-4, IL-6, IL-10 and interferon γ (IFN-γ) contents in serum, thymus and spleen in two groups were not significantly different (P>0.05). As a whole, compared to oat hay, feeding highland barley straw to Tibetan sheep can't reduce body weight gain and impair immune function, and it has the potential to improve the content of lysozyme as a non-specific immune factor in serum. Highland barley straw can be used as a source of roughage for Tibetan sheep.

Cite this article

ZHOU Xiaoling , YAN Qiongxian , TONG Haiou , ZHOU Chuanshe , TANG Shaoxun , HAN Xuefeng , TAN Zhiliang . Effects of Highland Barley Straw on Body Weight Gain and Immune Indexes in Growing Tibetan Sheep[J]. Chinese Journal of Animal Nutrition, 2016 , 28(10) : 3192 -3198 . DOI: 10.3969/j.issn.1006-267x.2016.10.022

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