ArticleTropical animal health and production2026
Validation and design of a wearable harness for monitoring remote heart rate variability in dairy cows under grazing conditions.
Article in Tropical animal health and production, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Short communication-characterizing heart rate of beef cattle during stunning and exsanguination at slaughter.Journal of animal science · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In veterinary medicine, heart rate variability (HRV) has emerged as a valuable tool for assessing welfare, comfort, stress responses, and overall physiological status. This study aimed to design and validate a harness/vest wearable system for remote HRV measurement and monitoring in dairy cows managed under rotational grazing conditions in the high tropics. The harness/vest was developed to protect and stabilize Holter-type measurement devices under field conditions, ensuring that it did not interfere with animal comfort and allowed proper HRV signal acquisition. For HRV measurements, a Polar H10® Heart Rate Sensor paired with a Polar Unite® watch was used. To evaluate the practical application of the harness/vest and its impact on animal comfort, lactating Holstein and Holstein x Jersey crossbreed dairy cows (n = 74) were monitored. The behavior of the animals was observed, and these observations were subsequently compiled into an ethogram, used as an outcome measure to verify whether the harness/vest altered natural behaviors. Behavioral and physiological responses were compared between cows wearing the harness/vest and those without it. The observed behavioral patterns, including posture, locomotion, feeding behavior, and social interactions, were similar between groups, indicating that the harness/vest did not interfere with comfort or routine activities. Comfort was assessed through: (1) comparison of frequencies and durations of key behaviors, (2) evaluation of any avoidance or agitation responses at fitting, and (3) continuous observation for signs of mechanical interference, rubbing, or restraint. Based on these evaluations, Holter-type devices can be reliably integrated into the harness/vest system developed in this study, representing an innovative and effective tool for continuous, remote, and noninvasive HRV monitoring in grazing dairy cows in the high tropics, while preserving comfort and welfare.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.