Perinatal Flavour Learning and Adaptation to Being Weaned: All the Pig Needs is Smell

M. Oostindjer, J.E. Bolhuis, K. Simon, H. van den Brand, B. Kemp

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

Abstract

Perinatal flavour learning through the maternal diet is known to enhance flavour preference and acceptance of flavoured food in many species, yet still little is known about the mechanism underlying perinatal flavour learning. Previously we found positive effects of perinatal flavour learning on food intake, growth and behaviour of piglets postweaning, but no increased preference for the flavour. This suggests that flavour learning in pigs works through a reduction of weaning stress by the presence of the familiar flavour instead. The aim of this study was to investigate whether perinatal flavour learning reduces stress at weaning, and whether the effect is stronger when the familiar flavour is present in the food. Sows were offered an anethol-flavoured diet (Flavour treatment) or control diet (Control treatment) during late gestation and lactation. Flavour and Control piglets were provided with anethol either in their food (Food treatment) or in the air (Air treatment) after weaning. Preweaning and postweaning treatments did not affect food intake, preference or growth in the first two weeks postweaning but flavour treatment reduced the latency to eat (24 versus 35 hours, P = 0.02) and within-pen variation in growth (SD within-pen: 0.7 versus 1.2 kg, P
Original languageEnglish
Article numbere25318
Number of pages7
JournalPLoS ONE
Volume6
Issue number10
DOIs
Publication statusPublished - 2011

Keywords

  • transnatal olfactory continuity
  • full-term newborns
  • amniotic-fluid
  • mothers milk
  • feeding preferences
  • domestic ruminants
  • human amygdala
  • familiar odor
  • growing pigs
  • in-utero

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