頁籤選單縮合
題名 | 利用近紅外光分析儀(NIRS)快速測定青貯料品質=Quick Determination of Silage Quality with Near Infrared Reflectance Spectroscopy |
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作者 | 盧啟信; 許福星; | 書刊名 | 畜產研究 |
卷期 | 40:1 2007.03[民96.03] |
頁次 | 頁17-23 |
分類號 | 437.11 |
關鍵詞 | 近紅外光分析儀; 檢量線; 狼尾草; 青割玉米; 青貯料; Near infrared reflectance spectroscopy; NIRS; Calibration equations; Napiergrass; Forage maize; Silage; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗目的在建立利用近紅外線反射光譜分析儀(NIRS)快速測定青割玉米及狼尾草青貯料之粗蛋白質、酸洗纖維、中洗纖維及水溶性碳水化合物含量之檢量線,以期能快速評估青割玉米及狼尾草青貯料品質,以提供酪農調配飼料配方之參考。搜集來源不同之青割玉米及狼尾草青貯料樣品,一部份樣品作化學分析,包括粗蛋白質、酸洗纖維、中洗纖維及水溶性碳水化合物,一部份樣品作NIRS掃描。試驗結果顯示,利用NIRS建立之狼尾草青眝料粗蛋白質、酸洗纖維、中洗纖維及水溶性碳水化合物之檢量線與學分析方法之相關性(R²)分別為0.92、0.83、0.82及0.85。青割玉米青貯料則為0.93、0.85、0.87及0.84。狼尾草青眝料檢量標準偏差(SEC)分別為0.39%、1.80%、2.32%及0.41%,青割玉米青貯料則為0.41%、1.72%、2.00%及0.47%。這些檢量線利用其他樣品檢定統計結果,四種化學成分之NIRS測定結果,狼尾草及青割玉米青貯料之CP和化學分析結果迴歸係數超過0.85,其餘ADF、NDF及WSC之NIRS測定結果和化學分析結果迴歸係數分別是0.77 ~ 0.81之間。每一條檢量線之截距(intercept)及斜率(slope)經校正後均趨向於0.00及1.00。本試驗如能利用連續光譜掃描,將可提高其準確性。 |
英文摘要 | Objectives of this study were to establish the calibration equations for quick determination of crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF) and water soluble carbohydrate (WSC) of forage maize and napiergrass silage with the near infrared reflectance spectroscopy (NIRS) and providing information to prepare the rations for dairy cows. The silage samples of forage maize and napiergrass were taken from diverse sources. Parts of the sample were taken for determining CP, ADF, NDF and WSC by traditional chemical analysis. The others were scanned by NIRS. The results showed that the regression coefficients (R²) between calibration equation and chemical analysis for CP, ADF, NDF and WSC of napiergrass silage were 0.92, 0.83, 0.82, and 0.85, respectively, and those for forage maize silage were 0.93, 0.85, 0.87 and 0.84, respectively. The standard errors of calibration (SEC) for CP, ADF, NDF and WSC of napiergrass silage were 0.39, 1.80, 2.32, and 0.41 %, respectively, and those for forage maize silage were 0.41, 1.72, 2.00 and 0.47%, respectively. On the other hand CP, ADF, NDF and WSC of the different silage samples were determined by the established calibration equations. The results showed that correlation coefficients (r) between NIRS and chemical analysis for CP of napiergrass and forage maize silages were above 0.85. However, those for ADF, NDF and WSC of both napiergrass and forage maize silages were between 0.77 and 0.81. The intercept and the slope of each calibration equation after correction were near 0 and 1, respectively. The prediction precision might be increased by the calibration equation with continuous spectrum. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。