Abstract
Energy cost of the activities of grazing cows, effect of plot size
Highlights
Time spent, distance travelled and energy cost of the activities of cows grazing on plots of 28 ha throughout the entire day were first measured by Brosh et al (2006)
Plot size may affect animals’ behaviour because in larger plots each individual cow has a larger area to explore for herbage selection, and this may affect its allocations of time, distance, and energy expenditure among its activities, and may affect its total daily EE
The objective of the present study was to measure the energy costs of activities and the daily EE of cows grazed on large plots, for comparison with data previously obtained in smaller plots
Summary
Distance travelled and energy cost of the activities of cows grazing on plots of 28 ha throughout the entire day were first measured by Brosh et al (2006). They used the heart-rate method for measuring energy expenditure (EE) and Global Positioning System (GPS) collars, equipped with motion sensors. The objective of the present study was to measure the energy costs of activities and the daily EE of cows grazed on large plots, for comparison with data previously obtained in smaller plots.
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