Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS)
The purpose with the study was to find a pattern in the behaviour of dairy cows which could be related to their social rank. A behavioural study was conducted at the University Cattle Research Centre (Kungsängen) in Uppsala, Sweden. The study included 12 lactating dairy cows, 6 high ranked and 6 low...
| Autor principal: | |
|---|---|
| Formato: | Otro |
| Lenguaje: | sueco sueco |
| Publicado: |
2006
|
| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/11917/ |
| _version_ | 1855571965653286912 |
|---|---|
| author | Mehlqvist, Maria |
| author_browse | Mehlqvist, Maria |
| author_facet | Mehlqvist, Maria |
| author_sort | Mehlqvist, Maria |
| collection | Epsilon Archive for Student Projects |
| description | The purpose with the study was to find a pattern in the behaviour of dairy cows which could be related to their social rank. A behavioural study was conducted at the University Cattle Research Centre (Kungsängen) in Uppsala, Sweden. The study included 12 lactating dairy cows, 6 high ranked and 6 low ranked. The cows were housed in a loose housing barn with an automatic milking system (AMS) to which they had access 24 hours a day. During the experiment the total number of cows in the barn was 46. A forced cow traffic with pre-selection was used. The behavioural study included data from the automatic feeding- and milking system during 14 days and video recorded behavioural observations during 2 days. It was difficult to find significant differences between high ranked and low ranked cows due to a large variation in individual behaviour. However the high ranked cows tended to be milked more often between 06.00 h and 12.00 h, indicating it to be a more attractive time for milking. However, differences in eating behaviour could be observed. High ranked cows spent significant more time in the eating area and tended to visit the feeding stations more often than low ranked cows. Furthermore the high ranked cows tended to have a lower eating rate. However, the total feed consumption did not differ between cows with high or low rank. It was therefore suggested that low ranked cows were able to satisfy their nutritional needs but that they were forced to have a more efficient eating behaviour. The low ranked cows spent more time standing in the cubicles, probably to avoid confrontations with higher ranked cows. During the time just before milking, the low ranked cows were closer to the AMS when they were lying down. The reason might be that they want to observe the entrance so that they can find a way to get access to the AMS without confronting cows with higher rank. It was also observed that high ranked cows were further away from the AMS during the night, when they were resting. A possible explanation is that the cubicles that are most distant from the AMS are more attractive resting places, due to a less disturbant environment. |
| format | Otro |
| id | RepoSLU11917 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2006 |
| publishDateSort | 2006 |
| record_format | eprints |
| spelling | RepoSLU119172017-11-16T08:55:59Z https://stud.epsilon.slu.se/11917/ Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) Mehlqvist, Maria Animal feeding The purpose with the study was to find a pattern in the behaviour of dairy cows which could be related to their social rank. A behavioural study was conducted at the University Cattle Research Centre (Kungsängen) in Uppsala, Sweden. The study included 12 lactating dairy cows, 6 high ranked and 6 low ranked. The cows were housed in a loose housing barn with an automatic milking system (AMS) to which they had access 24 hours a day. During the experiment the total number of cows in the barn was 46. A forced cow traffic with pre-selection was used. The behavioural study included data from the automatic feeding- and milking system during 14 days and video recorded behavioural observations during 2 days. It was difficult to find significant differences between high ranked and low ranked cows due to a large variation in individual behaviour. However the high ranked cows tended to be milked more often between 06.00 h and 12.00 h, indicating it to be a more attractive time for milking. However, differences in eating behaviour could be observed. High ranked cows spent significant more time in the eating area and tended to visit the feeding stations more often than low ranked cows. Furthermore the high ranked cows tended to have a lower eating rate. However, the total feed consumption did not differ between cows with high or low rank. It was therefore suggested that low ranked cows were able to satisfy their nutritional needs but that they were forced to have a more efficient eating behaviour. The low ranked cows spent more time standing in the cubicles, probably to avoid confrontations with higher ranked cows. During the time just before milking, the low ranked cows were closer to the AMS when they were lying down. The reason might be that they want to observe the entrance so that they can find a way to get access to the AMS without confronting cows with higher rank. It was also observed that high ranked cows were further away from the AMS during the night, when they were resting. A possible explanation is that the cubicles that are most distant from the AMS are more attractive resting places, due to a less disturbant environment. Syftet med studien var att finna mönster i kors beteende som kan härledas till deras sociala rang. En beteendestudie utfördes vid SLU på Kungsängens forskningscentrum i Uppsala och inkluderade tolv mjölkkor av rasen SRB. Av de tolv korna var sex ranghöga och sex ranglåga. Korna gick i ett stall med automatisk mjölkning och hade tillgång till mjölkningsstationen dygnet runt. I stallet fanns totalt 46 mjölkkor och styrd kotrafik med förselektion tillämpades. För att studera kornas beteende samlades data in under 14 dagar från det automatiska foder- och mjölkningssystemet. Dessutom gjordes beteendeobservationer under två dygn med hjälp av videofilmning. Korna visade en stor variation i sina beteenden varmed det var svårt att finna signifikanta skillnader mellan ranggrupperna. Dock tenderade de högrankade korna att mjölkas oftare mellan klockan 06.00-12.00, vilket antogs bero på att det var en mer attraktiv tid att mjölkas på. Dessutom fanns det antydningar om skillnader i kornas ätbeteende. De högrankade korna spenderade signifikant längre tid i foderavdelningen och tenderade att ha fler foderbesök och måltider. Dessutom tenderade de att ha lägre äthastighet än de lågrankade korna. Däremot fanns inga skillnader i foderkonsumtion. Det föreslås därmed att de lågrankade korna inte hade några problem med att tillgodose sitt näringsbehov men att de tvingades ha ett mer effektivt ätbeteende. De lågrankade korna tillbringade mer tid stående i liggbås vilket antogs bero på att de ville undvika konfrontationer med högrankade kor. Under natten och timmen innan mjölkning befann sig de lågrankade korna närmare mjölkningsstationen då de låg ner. Detta berodde troligtvis på att de lågrankade korna ville hålla sig närmare mjölkningsstationen innan mjölkning för att hitta ett bra tillfälle att gå in i stationen utan att konfronteras med högre rankade kor. Dessutom observerades att de högrankade korna befann sig längre bort från mjölkningsstationen under natten då de låg ner. Detta kan bero på att det var mer fördelaktigt för korna att vila längre bort från mjölkningsstationen eftersom det troligen var lugnare där. 2006-08-14 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/11917/1/mehlqvist_m_171116.pdf Mehlqvist, Maria, 2003. Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS). UNSPECIFIED, Uppsala. Uppsala: (VH) > Dept. of Animal Nutrition and Management (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-650.html> urn:nbn:se:slu:epsilon-s-8865 swe |
| spellingShingle | Animal feeding Mehlqvist, Maria Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title | Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title_full | Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title_fullStr | Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title_full_unstemmed | Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title_short | Betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (AMS) |
| title_sort | betydelsen av social rang på beteende och mjölkningsparametrer i ett automatiskt mjölkningssystem (ams) |
| topic | Animal feeding |
| url | https://stud.epsilon.slu.se/11917/ https://stud.epsilon.slu.se/11917/ |