Triaxial accelerometers for recording grazing and ruminating time in dairy cows: An alternative to visual observations

Simple item page
dc.audience researchers es_MX
dc.contributor.author Adolfo Armando Rayas-Amor, 0000-0002-5958-8721
dc.contributor.author ERNESTO MORALES_ALMARAZ, 0000-0003-0675-2193
dc.contributor.author RODOLFO VIEYRA-ALBERTO, 0000-0001-5889-1203
dc.contributor.author ANASTACIO GARCÍA MARTÍNEZ, 0000-0001-8021-5412
dc.contributor.author Carlos Galdino Martinez-Garcia, 0000-0001-9924-3376
dc.contributor.author Rosy Cruz-Monterrosa, 0000-0003-2859-013X
dc.contributor.author Genaro Miranda-de la Lama, 0000-0002-6848-1010
dc.contributor.other Licona Velázquez, Gustavo
dc.coverage US es_MX
dc.date.accessioned 2022-11-30T22:54:05Z
dc.date.available 2022-11-30T22:54:05Z
dc.date.issued 2017
dc.description he 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 was 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. Median acceleration (m/s2) readings in the X-axis >0.175 and <0.95 indicated grazing activity, whereas readings in the Z-axis >-0.275 and <0.0875 indicated ruminating activity. The degree of vertical tilt (° Y-axis) was used to determine grazing position (readings >0° and <61°) and ruminating (readings >0° and <25.8°). Results showed a significant (P < 0.001) relationship of estimated grazing time against visual observations when acceleration (X-axis) was used only; nonetheless acceleration (Z-axis) was not significant (P > 0.05) for estimating ruminating time. When acceleration and tilt were used for estimating grazing (X- and Y-axis) and ruminating (Z- and Y-axis) time, the slope in both showed a significant (P < 0.001) relationship. The prediction R2 in both activities indicated that acceleration (X- and Z-axis) and tilt (Y-axis) of HOBO loggers explained 0.961 and 0.945 of the variance in visual observations per cow/day. Therefore, the validation of the HOBO loggers was successful on a per cow/day and per day basis. es_MX
dc.format application/pdf es_MX
dc.identificador.materia 6 es_MX
dc.identifier.uri http://hdl.handle.net/20.500.12222/329
dc.language eng es_MX
dc.publisher Elsevier es_MX
dc.publisher Australian Veterinary Behaviour Interest Group: a special interest group of the Australian Veterinary Association es_MX
dc.publisher International Working Dog Breeding Association es_MX
dc.rights.license info:eu-repo/semantics/openAccess es_MX
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ es_MX
dc.source.other Journal of Veterinary Behavior: Clinical Applications an Research. Vol.20 (2017) es_MX
dc.subject CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA es_MX
dc.subject.keywords Validation es_MX
dc.subject.keywords Triaxial accelerometer es_MX
dc.subject.keywords HOBO Pendant G es_MX
dc.subject.keywords Grazing es_MX
dc.subject.keywords Ruminating es_MX
dc.subject.keywords Dairy cows es_MX
dc.title Triaxial accelerometers for recording grazing and ruminating time in dairy cows: An alternative to visual observations es_MX
dc.type article es_MX
dc.type.uri https://doi.org/10.1016/j.jveb.2017.04.003 es_MX
dc.type.version info:eu-repo/semantics/publishedVersion es_MX
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
000264.pdf
Size:
502.03 KB
Format:
Adobe Portable Document Format
Description:
9 páginas
Download
No Thumbnail Available
Name:
000264.xml
Size:
1.62 MB
Format:
Extensible Markup Language
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Artículos Científicos