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Toivonen, Tina, 2020. Förflytta grisar (Sus scrofa domesticus) : en jämförelsestudie mellan traditionell drivning och positiv förstärkning. First cycle, G2E. Uppsala: SLU, Dept. of Animal Environment and Health



In Sweden 2.65 million pigs (Sus scrofa domesticus) were slaughtered in 2018, whilst the number
throughout Europe was startling 255 million heads in 2017. Moving and handling of pigs is one of
the most stressful events in a pig’s life and is carried out with more or less aversive methods that
may stress the pigs to varying degrees. The purpose of this study was to investigate if it was possible
to move and handle the pigs in a less aversive way whilst retaining the same time and effort level.
120 pigs were used of which 60 were trained in groups of 10 individuals at a time, at the research
centre of Lövsta. The training method applied was positive reinforcement where a clicker and a
novel object consisting of a target stick were used for three sessions per group. Finally, the pigs from
each of the twelve pens were moved to simulate moving at time of slaughter, from the home pen to
a new pen using two different methods; control or trained. Six of the twelve groups constituted the
control group and were moved conventionally from behind using a moving board, whilst the other
six groups that had been previously trained to follow a target were moved and handled through this
method. The trained group was significantly slower in being moved to the new pen, probably due to
their strong inherent need to explore novel environments. The pigs who were conventionally moved
did not have the opportunity to explore the novel environment as they were rushing to get away from
the handler. Signs of stress such as barking were equal in both control group and trained group
although these findings could be debated as originating from different emotions in the pigs. The
movement of the pigs back to their home pens was significantly quicker in both the trained and the
untrained groups compared to the initial moving, showing that habituation to a novel environment
occurs rapidly.

Main title:Förflytta grisar (Sus scrofa domesticus)
Subtitle:en jämförelsestudie mellan traditionell drivning och positiv förstärkning
Authors:Toivonen, Tina
Supervisor:Yngvesson, Jenny and Wallgren, Torun and Wilhelmsson, Sofia
Examiner:Wallenbeck, Anna
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2020
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:VK005 Ethology and Animal Welfare - Bachelor's Programme, 180.0hp
Supervising department:(VH) > Dept. of Animal Environment and Health
Keywords:gruppträning, gris, sus scrofa, fösning, drivning, etologi, target, positiv förstärkning, djurvälfärd
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Subject. Use of subject categories until 2023-04-30.:Animal husbandry
Animal ecology
Deposited On:16 Jul 2020 13:01
Metadata Last Modified:17 Jul 2020 01:01

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