Publication Date
1993
Description
A new ambulatory apparatus (named "jaw recorder") has been developed. The apparatus has a large data storage capacity (32 768 data points), and enables data to be recorded every minute for a minimum of 22 days in one recording session. A Holstein heifer was fitted with the apparatus and was grazed with 4 other heifers for 13 days on a pasture of 0.36 ha of Italian ryegrass (Lolium nmltiflorum Lam.). Grazing and rumination period could be distinguished by a combination of jaw movements and pauses between jaw movements longer than 3 sec/min. Grazing and rumination time distinctly increased with days during the first 6 days of the period. Jaw movements. during grazing changed with grazing days.
Citation
Matsui, Kanji and Okubo, Tadakatu, "A New Ambulatory Data-logging System for a Long Term Determination of Grazing and Rumination Behavior on Free Ranging Cattle" (2024). IGC Proceedings (1993-2023). 19.
https://uknowledge.uky.edu/igc/1993/session18/19
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
A New Ambulatory Data-logging System for a Long Term Determination of Grazing and Rumination Behavior on Free Ranging Cattle
A new ambulatory apparatus (named "jaw recorder") has been developed. The apparatus has a large data storage capacity (32 768 data points), and enables data to be recorded every minute for a minimum of 22 days in one recording session. A Holstein heifer was fitted with the apparatus and was grazed with 4 other heifers for 13 days on a pasture of 0.36 ha of Italian ryegrass (Lolium nmltiflorum Lam.). Grazing and rumination period could be distinguished by a combination of jaw movements and pauses between jaw movements longer than 3 sec/min. Grazing and rumination time distinctly increased with days during the first 6 days of the period. Jaw movements. during grazing changed with grazing days.
