Use of a commercial indoor positioning system for monitoring resting time and moving distance in group‐housed dairy calves

To assess the usefulness of a commercially available indoor positioning system for monitoring the resting time and moving distance in group‐housed dairy calves as indicators of their health status, five dairy calves were housed in a free barn, and their coordinate was recorded. The mean displacement...

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Veröffentlicht in:Animal science journal 2023-01, Vol.94 (1), p.e13830-n/a
Hauptverfasser: Ueda, Koichiro, Ishii, Takakyuki, Nakai, Yukako, Odaka, Kunio
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Sprache:eng
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Zusammenfassung:To assess the usefulness of a commercially available indoor positioning system for monitoring the resting time and moving distance in group‐housed dairy calves as indicators of their health status, five dairy calves were housed in a free barn, and their coordinate was recorded. The mean displacement (cm/s) within a minute showed a double‐mixture distribution. Actual observations revealed that the minutes in the first distribution with shorter displacement were mostly the time that the calves spent lying. To predict the daily lying time and moving distance, a mixed distribution was divided at a threshold value. The mean sensitivity (the proportion of total minutes predicted correctly as lying, in total minutes observed lying) was more than 92%. The daily fluctuation in lying time correlated well with the actual lying time (r = 0.758, p 
ISSN:1344-3941
1740-0929
DOI:10.1111/asj.13830