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Discrimination between shepherds by lambs reared under artificial conditions

X Boivin1, R Nowak, G Desprès

  • 1LAHM, INRA Theix, St Genés Champanelle, France.

Journal of Animal Science
|November 28, 1997
PubMed
Summary

Lambs can recognize their primary caregiver, showing less vocalization and movement around a familiar shepherd. This recognition ability diminishes by 14 weeks of age.

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Area of Science:

  • Animal behavior
  • Animal cognition
  • Livestock management

Background:

  • Early life experiences significantly shape animal recognition abilities.
  • Understanding social recognition in livestock is crucial for welfare and management.

Purpose of the Study:

  • To investigate lambs' ability to discriminate between a familiar and an unfamiliar shepherd.
  • To determine the impact of early rearing conditions on social recognition.

Main Methods:

  • Thirty-two artificially reared lambs were exposed to either one or three shepherds during the first three weeks of life.
  • Lambs were tested at 3, 6, and 14 weeks of age for their behavioral responses to familiar and unfamiliar shepherds.
  • Behavioral observations included vocalization, movement, and interaction during isolation and shepherd presence.

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Main Results:

  • Lambs showed significantly less vocalization and movement in the presence of any shepherd compared to isolation.
  • Lambs approached, vocalized less, moved less, and interacted more with a known shepherd than an unknown one.
  • This recognition persisted for at least three weeks after a period of no human visual contact, but was not evident at 14 weeks.

Conclusions:

  • Intensive early contact with a single shepherd facilitates lambs' ability to recognize individuals.
  • The effect of early rearing on shepherd recognition is temporary, diminishing by 14 weeks of age.
  • Rearing management involving multiple shepherds did not significantly impact recognition abilities.