Establishment of a preference by the newborn lamb for its mother: The role of opioids.
Abstract
Mother-young relationships in sheep are characterized by individual recognition and a rapidly developing exclusive bond. The authors examined the role of opioids in establishment of the lamb's preference for its mother. Newborn lambs received the opioid receptor antagonist naltrexone (0.0, 1.5, or 3.0 mg/kg i.p.), and lambs were tested at 24 hr and 48 hr of age. At 24 hr, controls spent significantly more time near the mother than near an alien ewe; no significant difference was obtained for the naltrexone-treated groups. The effect of naltrexone persisted at 48 hr. No other significant behavioral difference was observed. Results support the hypothesis that opioids mediate the establishment of mother preference and the view that positive affect associated with social attachment and maternal care may be modulated by opioids.
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Opioid agonists promote mother-offspring bond formation and later maternal behavior in sheep, while opioid antagonists prevent both mother-offspring and offspring-mother bonding.
“Opioid agonists potentiate the formation of mother-offspring bonds and subsequent maternal behavior in sheep, while opioid antagonists prevent both mother-offspring and offspring-mother bonding (Kendrick and Keverne 1989; Keverne and Kendrick 1994; Shayit et al 2003).”
From The behavioral, anatomical and pharmacological parallels between social attachment, love and addiction (2012) · cites this paper as Shayit et al 2003
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References 51 · Cited by 43
- Authors
- Shayit, M., Nowak, R., Keller, M., & Weller, A.
- Affiliations
- Bar-Ilan University (IL)
- Institut National de la Recherche Agronomique (FR)
- Venue
- Behavioral Neuroscience
- Published
- 2003
- Volume
- 117
- Issue
- 3
- Pages
- 446-454
- ISSN
- 0735-7044 (ISSN-L)
- 1939-0084
- OpenAlex
- W1989955485
- Cited by
- 43
- References
- 51
- Citations by year
- 2022: 3 · 2021: 4 · 2020: 1 · 2019: 4 · 2018: 4 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 3
- FWCI
- 2.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Behavioral Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Topics
- Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Human-Animal Interaction Studies
- Keywords
- newborn lambs, opioids, naltrexone, opioid antagonism, maternal care, social attachment, sheep
- MeSH terms
- Animals, Animals, Newborn, Choice Behavior, Female, Naltrexone, Narcotic Antagonists, Narcotics, Object Attachment, Pregnancy, Receptors, Opioid, Sheep, Maternal Exposure
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