牛乳導電度檢測門檻值決定之研究

The Study of Determination of Electrical Conductivity Threshold for Raw Milk

連振昌(Cheng-Chang Lien) ； 萬一怒(Ye-Nu Wan)

《農業機械學刊》 8卷1期 (1999/03) Pp. 1-13

https://doi.org/10.30062/JAM.199903.0001

摘要

牛乳的導電度與牛乳中的離子濃度有關，泌乳牛罹患乳房炎時其分房乳的導電度會產生變化，因此可藉由分房乳導電度變化檢測出泌乳牛是否罹患乳房炎。本研究之主要目的即在探討健康與感染泌乳牛其分房乳的氯離子濃度、體細胞數與導電度的關係，進而分析使用導電度門檻值及分房導電度比值檢測泌乳牛罹患乳房炎時健康分房的特定度、感染分房的敏感度及不同擠乳時間對分房乳導電度的影響，以作為研發出適合國內酪農使用之乳房炎導電度線上檢測系統的依據。

關鍵字

導電度 ； 乳房炎 ； 體細胞數

並列摘要

Electrical conductivity of milk is dependent on the ionic concentration in the milk. As dairy cows suffer from mastitis, change of electrical conductivity of its quarter milk would occur. Therefore, variation of electrical conductivity of quarter milk could be used to inspect whether dairy cows suffer with mastitis or not. The purpose of this study is to investigate the relationship among ionic concentration of chloride, somatic cell count, and electrical conductivity for healthy and infected dairy cows. Furthermore, electrical conductivity threshold and ratio of electrical conductivity would be use to examine specificity of healthy quarter, sensitivity of infected quarter, and effect of milking time on electrical conductivity of quarter milk as dairy cows suffering from mastitis. The analysis results of this study could be a basis for developing an on line inspection system to determine the electrical conductivity of dairy cow mastitis for domestic dairy farmers.

並列關鍵字

Electrical conductivity ； Mastitis ； Somatic cell count