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- Title
A radio transmission pH measurement system for continuous evaluation of fluid pH in the rumen of cows.
- Authors
Sato, Shigeru; Kimura, Atsushi; Anan, Tomoaki; Yamagishi, Norio; Okada, Keiji; Mizuguchi, Hitoshi; Ito, Kazunori
- Abstract
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.
- Subjects
RADIO transmitters &; transmission; HYDROGEN-ion concentration; COWS; WIRELESS communications; CATTLE
- Publication
Veterinary Research Communications, 2012, Vol 36, Issue 1, p85
- ISSN
0165-7380
- Publication type
Article
- DOI
10.1007/s11259-012-9518-x