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首页> 外文会议>Acta Prataculturae Sinica vol.15 Suppl. July 2006: Grassland Agriculture: Balancing Production and Environmental Protection >Differences in yak (Bos grunniens ) grazing behaviour and chemical composition of feces in the southern and northern Qinghai-Tibetan Plateau in China
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Differences in yak (Bos grunniens ) grazing behaviour and chemical composition of feces in the southern and northern Qinghai-Tibetan Plateau in China

机译：青藏高原南部和北部northern牛（Bos grunniens）放牧行为和粪便化学成分的差异

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摘要

Four behavioural observations of 3 yak cows for 3 consecutive days were conducted and all feces were collected and the chemical compositions determined in the southern and northern sites in Qinghai - Tibetan Plateau (SOU and NOR. respectively) in summer and winter seasons (SUM and WIN, respectively). Grazing time was significantly longer in SUM than in WIN in both sites (p < 0.001). Rumination time in WIN was longer in NOR than in SOU (p < 0.001). Chewing behaviour of ruminating bolus was different between sites and seasons (p < 0.001). DM content of feces was higher and the N content was lower in WIN than in SUM (p < 0.001). DM, N, ADF and Ash excretions in feces per body weight a day were significantly greater in NOR than in SOU (p < 0.001). From these results, it was estimated that SOU might be smaller in intake of yak and in material circulation of rangeland than NOR.
机译：连续3天对3头牛进行了四次行为观察，收集了所有粪便，并在夏季和冬季（SUM和WIN）在青海-青藏高原的南部和北部站点（分别为SOU和NOR）确定了化学成分。 ， 分别）。在两个站点中，SUM的放牧时间显着长于WIN（p <0.001）。 NOR中WIN的反刍时间比SOU中的反刍时间更长（p <0.001）。不同部位和季节的反刍弹药的咀嚼行为不同（p <0.001）。与SUM相比，WIN中粪便的DM含量较高，N含量较低（p <0.001）。 NOR中的粪便中每天DM，N，ADF和Ash排泄量显着高于SOU（p <0.001）。根据这些结果，估计S牛的摄入量和牧场物质循环中的SOU可能比NOR小。

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