| 不同NFC/NDF比日粮对奶山羊瘤胃pH值动态变化的影响 |
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| 引用本文： | 胡红莲,卢德勋,刘大程,石岩,珊丹.不同NFC/NDF比日粮对奶山羊瘤胃pH值动态变化的影响[J].畜牧与饲料科学,2011(9):35-37,40. |
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| 作者姓名： | 胡红莲 卢德勋 刘大程 石岩 珊丹 |
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| 作者单位： | 1. 内蒙古农业大学动物科学与医学学院,内蒙古呼和浩特,010018
2. 内蒙古农牧业科学院动物营养研究所,内蒙古呼和浩特,010031 |
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| 基金项目： | 国家自然科学基金项目，内蒙古自然科学基金 |
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| 摘 要： | 试验采用动态pH值连续监测记录系统对瘤胃pH值进行24h连续监测,旨在研究不同非纤维性碳水化合物/中性洗涤纤维比（NFC/NDF比）日粮对奶山羊瘤胃pH值昼夜动态变化的影响。选用6只安装有永久性瘤胃瘘管的关中奶山羊作为试验动物,采用自身对照试验设计,分为4期,每期10d,依次饲喂NFC/NDF比分别为1.02（Ⅰ期）、...
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| 关 键 词： | NFC/NDF 瘤胃 pH值 奶山羊 |
Effects of Dietary Non-fiber Carbohydrate to Neutral Detergent Ratios on Ruminal pH Dynamics in Dairy Goats |
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| Abstract: | Six Guanzhong dairy goats with permanent rumen cannula were used to determine the effects of four different ratios of NFC to NDF in diets on the ruminal pH dynamics.The NFC/NDF were1.02（Ⅰ）,1.24（Ⅱ）,1.63（Ⅲ） and 2.58（Ⅳ）,respectively.In the present study ruminal pH were monitored continuously by continous ruminal pH measuring and recording system.The results showed that①Ruminal pH values were decreased significantly with the increase of NFC/NDF.②With the increase of NFC/NDF,mean duration times for pH lower than 5.2,5.5,5.8 and 6.0 were increased from 0,0,2.42 and 9.40 h to 0.33,7.50,17.06 and 20.53 h,respectively. At the save time,curve areas for pH lower than 5.5,5.8 and 6.0 were increased from 0,0.21 and 1.43 to 1.09,4.84 and 8.59.The rate and degree of pH decline post feeding and the duration of pH nadir were increased with increase of dietary NFC/NDF. |
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| Keywords: | NFC to NDF ratios rumen pH dairy goats |
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