A radio transmission pH measurement system for continuous evaluation of fluid pH in the rumen of cows
A radio transmission pH measurement system for continuous evaluation of fluid pH in the rumen of cows
复制标题
DOI：
10.1007/s11259-012-9518-x
复制
发表时间：
2012-03-01
影响因子：
2.2
通讯作者：
Ito, Kazunori
中科院分区：
文献类型：
--
作者：
Sato, Shigeru;Kimura, Atsushi;Ito, Kazunori
我们开发了一种新型无线传输 pH 测量系统，用于连续监测奶牛瘤胃底部 pH 值，并将这些测量值与点样法测定的 pH 值进行比较。该无线系统由pH传感器、数据测量接收器、中继单元和带有专用软件的个人计算机组成。子弹形传感器可以通过导管轻松口服进入瘤胃，无需手术。玻璃电极采用温度补偿系统，可高精度检测瘤胃液pH值。通过无线系统测量健康瘤胃造瘘牛的瘤胃底部 pH 值为 6.52 +/- 0.18，通过点样法测量为 6.62 +/- 0.20；使用这些不同方法进行的 pH 测量之间存在相关性（n = 8，24 个样品，r = 0.952，P < 0.01）。当对饲喂引发瘤胃酸中毒的饮食的奶牛进行连续测量时，瘤胃底部 pH 值在早上饲喂后显着下降，然后在第二天早上饲喂时逐渐上升。该无线系统是一种即用型工具，用于估计瘤胃底部 pH 值的昼夜节律变化。
We developed a novel wireless radio transmission pH measurement system to continuously monitor ruminal bottom pH in cows, and compared these measurements to pH values determined by a spot-sample method. The wireless system consists of a pH sensor, data measurement receiver, relay unit, and personal computer with special software. The bullet-shaped sensor can be easily administered orally via a catheter into the rumen, without surgery. The glass electrode, using a temperature compensation system, can detect the rumen fluid pH with high accuracy. The ruminal bottom pH in healthy rumen-fistulated cows was measured as 6.52 +/- 0.18 by the wireless system and as 6.62 +/- 0.20 by the spot-sample method; with a correlation between pH measurements using these different methods (n = 8, 24 samples, r = 0.952, P < 0.01). When measured serially in a cow fed a diet evoking rumen acidosis, the ruminal bottom pH decreased markedly following the morning feeding and then increased gradually by the next morning feeding. This wireless system is a ready-to-use tool for estimating circadian changes in ruminal bottom pH.