Interpretation of data from GPS-collars with movement sensors on cattle
In this study GPS-collars with movement sensors were used on Nelore heifers on relatively small pastures in southern Brazil. Visual observations of the collared animals were made, so that data on the animal's actual behaviour could be compared to the data from the collars. The aim of the study was t...
| Autor principal: | |
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| Formato: | L3 |
| Lenguaje: | Inglés |
| Publicado: |
SLU/Dept. of Animal Environment and Health (until 231231)
2008
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| Materias: |
| _version_ | 1855571752634023936 |
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| author | Einemo, Anna |
| author_browse | Einemo, Anna |
| author_facet | Einemo, Anna |
| author_sort | Einemo, Anna |
| collection | Epsilon Archive for Student Projects |
| description | In this study GPS-collars with movement sensors were used on Nelore heifers on relatively small pastures in southern Brazil. Visual observations of the collared animals were made, so that data on the animal's actual behaviour could be compared to the data from the collars. The aim of the study was to verify and discuss the information about cattle behaviour provided by the GPS collars and the movement sensors in them.
No conciderable difference between the counts from the left/right and the forward/backward movement sensors could be detected. Hence the sum of the data from both of the movement sensors was used. Different behaviours and combinations of behaviours were tested for correlation to the sum of the movement data, and to distance traveled between the GPS-locations. It was not possible to determine if the animals were ruminating or not. High counts in the sum of the activity data from the movement sensors with some certainity indicated 'Grazing', and low counts in the movement sensor data indicated resting. It was not possible to determine from this study if longer distances traveled between the GPS-locations meant walking, but that is likely the case.
The main conclusion from this study is the clear connection between observed grazing and walking behaviour on one hand and the collars recorded activity in movement sensors and distance between GPS-locations on the other. Also, the relationship between the collars data and observed lying and standing are clear as long as the animals are not ruminating. |
| format | L3 |
| id | RepoSLU10791 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés |
| publishDate | 2008 |
| publishDateSort | 2008 |
| publisher | SLU/Dept. of Animal Environment and Health (until 231231) |
| publisherStr | SLU/Dept. of Animal Environment and Health (until 231231) |
| record_format | eprints |
| spelling | RepoSLU107912017-09-13T08:02:53Z Interpretation of data from GPS-collars with movement sensors on cattle Tolkning av data från GPS-halsband med rörelsesensorer på nötkreatur Einemo, Anna gps gps-collars cattle movement moving In this study GPS-collars with movement sensors were used on Nelore heifers on relatively small pastures in southern Brazil. Visual observations of the collared animals were made, so that data on the animal's actual behaviour could be compared to the data from the collars. The aim of the study was to verify and discuss the information about cattle behaviour provided by the GPS collars and the movement sensors in them. No conciderable difference between the counts from the left/right and the forward/backward movement sensors could be detected. Hence the sum of the data from both of the movement sensors was used. Different behaviours and combinations of behaviours were tested for correlation to the sum of the movement data, and to distance traveled between the GPS-locations. It was not possible to determine if the animals were ruminating or not. High counts in the sum of the activity data from the movement sensors with some certainity indicated 'Grazing', and low counts in the movement sensor data indicated resting. It was not possible to determine from this study if longer distances traveled between the GPS-locations meant walking, but that is likely the case. The main conclusion from this study is the clear connection between observed grazing and walking behaviour on one hand and the collars recorded activity in movement sensors and distance between GPS-locations on the other. Also, the relationship between the collars data and observed lying and standing are clear as long as the animals are not ruminating. I denna studie användes GPS-halsband med rörelsesensorer på kvigor av rasen Nelore på relativt små beten i södra Brasilien. Visuella beteendeobservationer av de djur som bar halsbanden gjordes, så att data som visade djurens beteende kunde jämföras med data från halsbanden. Syftet med studien var att verifiera och diskutera den information om nötkreaturs beteenden som erhålls med hjälp av GPS-halsbanden och rörelsesensorerna i dessa. Ingen stor skillnad kunde urskiljas mellan summorna av aktivieten som uppmättes i vänster/höger- och frammåt/bakåt-rörelsesensorerna. Därför användes summan av datan från de båda rörelsesensorerna. Olika beteenden och kombinationer av beteenden jämfördes med summan av datan från vänster/höger- och frammåt/bakåt-rörelsesensorerna, och med grafen över tillryggalagd sträcka mellan GPS-punkterna. Det var inte möjligt att avgöra om djuren idisslade eller inte. Höga värden på suman av aktivitetsdatan från rörelsesensorena indikerade ganska säkert att djuret betade, och låga värden på summan av datan från rörelsesensorerna indikerade vila. Det var inte möjligt att med hjälp av den här studien avgöra om längre tillryggalagd sträcka mellan GPS-punkterna betyder att djuret går eller vandrar, men detta är troligt. Den huvudsakliga slutsatsen i denna studie är det klara sambandet mellan de observerade beteendena beta och gå å ena sidan, och halsbandens registrerade aktivitet i rörelsesensorerna och avstånd mellan GPS-punkterna å andra sidan. Dessutom är sambandet mellan halsbandens data och de observerade beteendena ligga och stå klart, så länge djuren inte idisslar. SLU/Dept. of Animal Environment and Health (until 231231) 2008 L3 eng https://stud.epsilon.slu.se/10791/ |
| spellingShingle | gps gps-collars cattle movement moving Einemo, Anna Interpretation of data from GPS-collars with movement sensors on cattle |
| title | Interpretation of data from GPS-collars with movement sensors on cattle |
| title_full | Interpretation of data from GPS-collars with movement sensors on cattle |
| title_fullStr | Interpretation of data from GPS-collars with movement sensors on cattle |
| title_full_unstemmed | Interpretation of data from GPS-collars with movement sensors on cattle |
| title_short | Interpretation of data from GPS-collars with movement sensors on cattle |
| title_sort | interpretation of data from gps-collars with movement sensors on cattle |
| topic | gps gps-collars cattle movement moving |