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Welfare problems associated with electronic feeder systems

Aggression

  • Adding sows to an established group
  • Group systems
  • Shape of yard

Infertility

  • Stress after feeding
  • Stress at feeding

Loss of sow identification

  • Lost transponder tags / collars
  • Thin sow
  • Education - understanding
  • Poor design and maintenance

Skin abrasions

  • Aggression

Stress at mixing

  • Badly designed ESF system

Variable litter size

  • Embryo reabsorption / stress

Vulva biting

  • Feeder design
  • Poor pen/yard design
  • Queuing for feed