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Personlighetsvariationer hos mjölkkor
Linköping University, Department of Physics, Chemistry and Biology.
2010 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Personality variations in dairy cows (English)
Abstract [sv]

Syftet med denna studie var att undersöka om det fanns olika personlighetstyper hos mjölkkor av raserna SRB och SLB och om dessa personlighetstyper skilde sig mellan ras, ålder och vilken sida djuren stått på i lösdriften. Korna observerades i tre olika testmiljöer för att se huruvida konsistenta de var i deras beteenden: ostörda i lösdriften, vid mjölkning och med ett främmande objekt i lösdriften. Beteenden som studerades var normala beteenden, sociala beteenden, tramp och sparkningar vid mjölkning och interaktioner med det främmande objektet. Tolv beteendevariabler användes i en PCA (principal component analysis) och visade två komponenter som tillsammans kunde förklara 51,2 % av den totala variansen. Den första komponenten speglade aggression och extraversion, som ingår i medgörlighet och extraversion i den mänskliga femfaktorsmodellen. Den andra komponenten speglade ett mer introvert beteende och rädsla, som går under extraversion och neuroticism i samma modell. Oberoende T-test visade inga signifikanta skillnader mellan någon av komponenterna och ras eller sida i lösdriften p>0,05, däremot en tendens till skillnad mellan den första komponenten och ålder, där den äldre gruppen individer visade tydligare personlighetsdrag p<0.1. Tidigare studier har visat att personlighetsdimensioner som medgörlighet, neuroticism och extraversion ofta förekommer bland flera arter. Då olika personligheter hanterar stressfulla situationer på olika sätt, är detta ämne av stor vikt när det gäller förbättrandet av djurens välfärd.

Abstract [en]

The purpose of this study was to investigate if different personality dimensions existed in dairy cows of two breeds (SRB and Holstein) and if these personality dimensions differed between breed, age and how the animals were placed in the loose housing system. To investigate behavioural consistency, the cows were observed in three different situations: uninterrupted in their home pen, during milking and with a novel object in their home pen. Normal and social behaviour was observed as well as stepping and kicking during milking and interactions with the novel object. Twelve behavioural variables were used in a principal component analysis, which showed two components that together explained 51,2 % of the total variance. The first component reflected aggression and extraversion, which are included in agreeableness and extraversion in the human five-factor model. The second component reflected fear and introversion, which are included in neuroticism and extraversion in the same model. Independent-samples T test showed no significant differences between any of the components and breed or placement in the loose housing system p>0,05, however there was a tendency between the first component and age, where the older group showed a more defined personality p<0,1. Other studies have showed that personality dimensions such as agreeableness, neuroticism and extraversion often exist in several species. Different personalities cope with stressful situations in different ways, making this topic relevant to the improvement of animal welfare.

Place, publisher, year, edition, pages
2010. , 13 p.
Keyword [en]
coping, coping strategies, dairy cows, animal personality, behavioural syndrome
Keyword [sv]
Djurpersonligheter, djurbeteende, mjölkkor, personlighetsvariationer, femfaktorsmodellen, kor
National Category
Ecology
Identifiers
URN: urn:nbn:se:liu:diva-57301ISRN: LITH-IFM-G-EX--10/2349—SEOAI: oai:DiVA.org:liu-57301DiVA: diva2:324779
Presentation
2010-06-01, BL32, Linköpings Universitet, 58183, Linköping, 12:35 (Swedish)
Uppsok
Agriculture, Veterinary Medicine, Forestry
Supervisors
Examiners
Available from: 2010-06-17 Created: 2010-06-16 Last updated: 2011-05-18Bibliographically approved

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