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Res Vet Sci. 2015 Aug;101:196-8. doi: 10.1016/j.rvsc.2015.05.001. Epub 2015 May 14.

Eating and rumination activity in 10 cows over 10 days.

Author information

1
Department of Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich CH-8057, Switzerland. Electronic address: ubraun@vetclinics.uzh.ch.
2
Department of Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich CH-8057, Switzerland.

Abstract

Eating and rumination activities were evaluated in 10 Brown Swiss cows over 10 days, and the coefficients of variation (CV) were calculated for the investigated variables. A pressure sensor integrated into the noseband of a halter recorded jaw movements during chewing, which allowed the recording of eating and rumination times and the number of regurgitated boluses. The mean CVs ranged from 5.9 to 12.7% and were smaller for rumination (chewing cycles per bolus, 5.9%; daily number of cuds, 8.4%; rumination time, 9.1%) than for eating (eating time, 12.0%; chewing cycles related to eating, 12.7%). We concluded that of eating and rumination variables examined, the number of chewing cycles per regurgitated bolus is the most robust with little variation in individual cows.

KEYWORDS:

Cattle; Coefficient of variation; Eating; Rumination; Variation

PMID:
26008646
DOI:
10.1016/j.rvsc.2015.05.001
[Indexed for MEDLINE]
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