Influence of replacement rate on the welfare of sows introduced to a large dynamic group

Niamh O'Connell, V.E. Beattie, B.W. Moss

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


This experiment investigated the effects of replacing 10, 20, 30 or 40% of a dynamic group of forty sows on the welfare of newly-introduced animals. The experiment was replicated five times, using a total of 200 multiparous sows. Replacements took place at 3 week intervals, and 3 days prior to sows being added to the group the same number of animals were removed from the group. Sows were added to the dynamic group as pre-formed groups of four animals which had resided together for a period of 5 weeks beginning directly after their piglets were weaned. Replacement rate did not appear to influence overall levels of aggression to which newly-introduced animals were exposed on the day of mixing, however aggression among newly-introduced animals increased significantly as replacement rate increased between 20 and 40% (P
Original languageEnglish
Pages (from-to)43-56
Number of pages14
JournalApplied Animal Behaviour Science
Issue number1-2
Publication statusPublished - 12 Jan 2004

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)


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