ArticleAnimals : an open access journal from MDPI2026
Effects of Grazing Hour in a Part-Time Grazing System for Dairy Cows on Herbage Intake Assessed by Acoustic Detection of Prehension Events.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A study was carried out to evaluate the within-session grazing dynamics on bite mass, number of bites and herbage intake in dairy cows, combining acoustic detection of prehension events with hand-plucking estimates of bite mass. Nine lactating cows were managed under a part-time grazing system, with animals allowed access to pasture for 5 h per day. Measurements were conducted on four sampling days at 15-day intervals over a 2-month period. Measurements were taken at pasture entry and after 1, 2, 3, and 4 h of grazing. The number of prehensions during grazing was automatically detected from sound recordings using a custom-developed software tool. Hourly herbage intake was estimated as the product of hourly prehension number and estimated bite mass. Daily intake was also independently calculated from the difference between pre- and post-grazing herbage biomass. All measurements were aggregated at the hourly level to ensure temporal alignment among pasture characteristics, bite mass, and acoustic data. Intake was also independently estimated from biomass disappearance. A significant decrease in biomass (
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