Measuring rumen pH and temperature by an indwelling and wireless data transmitting unit and application under different feeding conditions

J. Gasteiner; M. Fallast; S. Rosenkranz; J. Häusler; K. Schneider; T. Guggenberge1

Measuring rumen pH and temperature by an indwelling and wireless data transmitting unit and application under different feeding conditions

in Precision livestock farming '09

Autor:innen:

J. Gasteiner

J. Gasteiner ¹Institute for Animal Husbandry and Animal Health, LFZ Raumberg-Gumpenstein, 8952 Irdning, Austria; Johann.Gasteiner@raumberg-gumpenstein.at

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M. Fallast

M. Fallast ³Technische Universitat, Science Park Graz, Plüddemanngasse 39, 8010 Graz, Austria

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S. Rosenkranz

S. Rosenkranz ³Technische Universitat, Science Park Graz, Plüddemanngasse 39, 8010 Graz, Austria

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J. Häusler

J. Häusler ²Institute for Livestock Research, Federal Agricultural Research and Education Centre (HBLFA) Raumberg-Gumpenstein, Austria.

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K. Schneider

K. Schneider ¹Institute for Animal Husbandry and Animal Health, LFZ Raumberg-Gumpenstein, 8952 Irdning, Austria; Johann.Gasteiner@raumberg-gumpenstein.at

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, und

T. Guggenberge1

T. Guggenberge1 ¹Institute for Animal Husbandry and Animal Health, LFZ Raumberg-Gumpenstein, 8952 Irdning, Austria; Johann.Gasteiner@raumberg-gumpenstein.at

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Art:: Kapitel

Seiten:: 127–133

DOI:: https://doi.org/10.3920/9789086866632_016

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An indwelling system for monitoring reticulo-ruminal pH and temperature was assembled. Data were sampled and stored in a memory chip and could be read out via radio transmission to an external receiver. The indwelling system can be administered orally, but to service the measuring units, feeding experiments and measurements were conducted using 5 rumen cannulated steers. After calibration by using standardized pH-dilutions (pH 4, pH 7), pH und temperature measurements were carried out under exactly defined feeding conditions, also measuring daily dry matter intake. In feeding experiment 1, animals received only hay, in feeding experiment 2, animals had pasture during day and forage during night. In feeding experiment 3 animals received a diet containing forage:concentrate 50:50. In feeding experiment 1, reticuloruminal temperature (mean 38.40±0.70 °C) was significantly influenced by drinking water but it was not connected with feeding time. Mean pH was 6.49±0.39 and nadir was pH 6.14. In feeding experiment 2, mean reticuloruminal temperature was 38.12±0.80 °C and mean pH was 6.36±0.22. Nadir during pasture was pH 5.34, nadir during feeding roughage was pH 6.16. Pasture had a significant influence on reticuloruminal pH. In feeding experiment 3 mean temperature was 38.55±0.83 °C and mean pH was 6.37±0.24. Nadir was pH 5.29. Decline of reticuloruminal pH was induced by feeding of concentrate. When comparing the results of measuring standardized dilutions (pH 4, pH 7) prior and after in vivo measurements, coefficient of correlation was 0.9987. Drift pH 4 was 0.197±0.070 and drift pH 7 was 0.107±0.088. Results show that the presented method is a useful and proper tool for scientific applications. The measuring system can also be administered to uninjured cattle. An adapted indwelling pH measuring system will be assembled for practical purposes in future.

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Precision livestock farming '09

ISBN:: 9789086866632

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 30 Oct 2009

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- Biowissenschaften
  - Allgemein
  - Tiere und Veterinärmedizin

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Measuring rumen pH and temperature by an indwelling and wireless data transmitting unit and application under different feeding conditions

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Precision livestock farming '09

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