Triaxial accelerometers for recording grazing and ruminating time in dairy cows: An alternative to visual observations
The aim of this study was to validate the recordings of a commercial triaxial accelerometer (HOBO Pendant G data loggers) with respect to visual observations of grazing and ruminating time of dairy cows. Seven lactating Holstein cows with a mean body weight of 602 ± 45 kg were used for the study. Grazing and ruminating times were recorded using HOBO loggers (31.5 hours of total observations for grazing and ruminating) that were attached to the lateral-medial side of the jaw using a strap attached to the head of each cow in a position such that the X-axis w as parallel to the ground, the Y-axis was perpendicular to the ground pointing upward, and the Z-axis was parallel to the ground pointing away from the sagittal plane; these relative positions were defined when the cow was in a natural head-up position.
Source: Journal of Veterinary Behavior: Clinical Applications and Research - Category: Veterinary Research Authors: Adolfo A. Rayas-Amor, Ernesto Morales-Almar áz, Gustavo Licona-Velázquez, Rodolfo Vieyra-Alberto, Anastacio García-Martínez, Carlos G. Martínez-García, Rosy G. Cruz-Monterrosa, Genaro C. Miranda-de la Lama Tags: Research Source Type: research
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