ArticleFrontiers in physiology2021
A High Cattle-Grazing Density Alters Circadian Rhythmicity of Temperature, Heart Rate, and Activity as Measured by Implantable Bio-Loggers.
Article in Frontiers in physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Underlying factors influencing job satisfaction and stress among TN-visa workers in the U.S. swine industry.One health (Amsterdam, Netherlands) · 2026Article
- Biologger-based monitoring of body temperature, heart rate, and heart rate variability in Lidia cattle: relationships with environmental conditions.International journal of biometeorology · 2026Article
- Article
- Circadian temperature rhythm in breeding sows: differences between days in oestrus and anoestrus after weaning.Porcine health management · 2024Article
- Finding biomarkers of experience in animals.Journal of animal science and biotechnology · 2024Review
- Connecting the dots: relationship between heart rate and overall dynamic body acceleration in free-ranging cattle.Conservation physiology · 2024Article
- Water-based medium-expansion foam depopulation of adult cattle.Translational animal science · 2023Article
Corrections and comments
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Authors and funding
3 authors.
Funding
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Abstract
Six cows managed under extensive grazing conditions were used to study the effect of moving the animals to a higher grazing density on the circadian rhythms of temperature (T), heart rate (HR), and activity (ACT), which were recorded by implantable bio-loggers. Cows were maintained at a density of 1.5 livestock units per hectare (LSUs/ha; low density, LD) until they were moved to a grazing area at 128 LSUs/ha (high density, HD). Animals were implanted subcutaneously with a T, HR, and ACT bio-logger, which was programmed to record data at 5-min intervals. For each animal, cosinor rhythmometry (the study of circadian rhythms by fitting a sine wave to a time series) was applied to the data recorded over 5 days in LD and HD. Mean Midline Estimating Statistic of Rhythm (MESOR; the average value around which the variable oscillates), amplitude (difference between the peak and the mean value of a wave), and acrophase (timing of peak activity) were calculated and evaluated statistically. Differences between mean day and nighttime values, and mean LD and HD values were calculated. Cows presented cosinor curves that fit a 24-h rhythm (
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