本文選題：干草　切入點：青貯　出處：《內(nèi)蒙古農(nóng)業(yè)大學》2017年碩士論文

【摘要】：對牧草飼料進行營養(yǎng)價值分析,首先要保證所取到的樣品是否具有代表性,能不能夠代表所抽批次的整體生理生化指標,會不會在取得樣品至開始檢測這一期間受到儲存條件的影響,干擾分析結(jié)果的準確性,是我們需要重點關(guān)注的問題。使用多年生豆科牧草紫花苜蓿(Medicago sativa L.)和一年生禾本科牧草燕麥(Arrhenatherum elatius(L.)Pressl),以及禾本科玉米(Zea mays L.)與禾本科蘇丹草(Sorghum sudanensem(Piper)Stapf.)的混合青貯產(chǎn)品為試驗樣品,針對其每個采樣面的樣品采集和儲存環(huán)節(jié)中所涉及的樣品采集層面、采集分布點數(shù)、采集深度以及儲藏時間、儲存容器等五個因素,采用L16(45)正交試驗設計,對上述條件下三種試驗樣品的營養(yǎng)物質(zhì)和相對飼用價值進行分析,旨在為牧草飼料分析樣品的采集和制備環(huán)節(jié)更加規(guī)范提供參數(shù),使品質(zhì)評價、營養(yǎng)價值的評定結(jié)果更加準確。以便減少在采集和儲存樣品過程中的不當操作,為檢測結(jié)果提供客觀、真實的檢測數(shù)值。通過本研究得出以下結(jié)論:(1)原始樣品的最佳采集方法是將草垛(或青貯窖)分上、中、下三層,每層取一個點確定采樣草捆(或青貯樣區(qū)),共三點呈對角線,苜蓿干草每個草捆(或青貯采樣區(qū))取樣點數(shù)采用9點、燕麥干草采用3點分布方式采集,中大型草捆采樣深度為40cm。(2)制備樣品宜立即測定,在實際工作中儲存時間不應超過30天,樣品適宜的儲存容器為自封袋。
[Abstract]:In order to analyze the nutritional value of forage forage, we should first ensure that the sample is representative and can represent the whole physiological and biochemical index of the batch. Will it be affected by storage conditions and interfere with the accuracy of the results of the analysis during the period between the acquisition of the sample and the beginning of the testing, The mixed silage products of alfalfa (Medicago sativa L.) and Arrhenatherum elatiusi L. Pressli, as well as the hybrid silage products of Zea mays L. and Sorghsudum Sudanens Piper Stapf.were used as experimental samples. According to the five factors involved in the sampling and storage of each sampling plane, such as sampling distribution, collection depth, storage time and storage container, the orthogonal design is adopted. The nutritional matter and relative feeding value of the three experimental samples were analyzed under the above conditions in order to provide parameters for the collection and preparation of forage forage analysis samples and to evaluate the quality of the samples. The assessment of nutritional value is more accurate in order to reduce improper manipulation in the collection and storage of samples and to provide an objective test result. The best way to collect the original sample is to divide the haystack (or silage cellar) into three layers, one point in each layer to determine the sample bundle (or silage area), which is diagonal at three points. The sampling points of each bundle (or silage area) of alfalfa hay were 9 points, and that of oat hay was 3 points distribution. The sampling depth of medium and large bales was 40 cm. 2) the sample should be determined immediately. The storage time should not exceed 30 days in actual work. The suitable storage container for the sample is self-sealing bag.
【學位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：S54;S816

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