Differential outcomes of unilateral interferences at birth.
Abstract: Behavioural modifications, including modifications of emotional reactivity, can occur following early experience such as handling (manual rubbing). Here, we investigated the effects of unilateral tactile stimulation at an early stage on emotional reactions later on. We handled newborn foals intensively on one side of their body. This early unilateral tactile experience had medium-term effects: the reactions of foals to a human approach, when they were 10 days old, differed according to the side stimulated at birth. Fewer right-handled foals accepted contact with humans, they delayed first contact longer and they evaded approaching humans sooner than did non-handled and left-handled foals. These results raise questions concerning the organization of neonatal care in animals and humans.
Publication Date: 2010-11-17 PubMed ID: 21084335PubMed Central: PMC3061188DOI: 10.1098/rsbl.2010.0979Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The research studies the effects of early tactile stimulation on one side of newborn foals and its influence on their later reactions to human approach. Results revealed that the side of the body that was handled affected the foals’ emotional responses, raising questions about neonatal care practices.
Research Objective
- The aim of this research was to investigate the impact of unilateral tactile stimulation on newborn foals. More specifically, the researchers wanted to understand how such stimulation would affect the animals’ later responses to human approach.
Methodology
- The researchers subjected newborn foals to intensive handling on one side of their body shortly after birth. In other words, the foals received manual rubbing on either the right or left side of their bodies.
Research Findings
- The study found that unilateral tactile stimulation at an early age had a variety of medium-term effects on the foals, specifically their reactions to a human approach at 10 days old.
- The study demonstrated a difference in response depending on which side of the body was handled at birth.
- It was observed that right-handled foals were less willing to accept human contact, they delayed the first contact longer and began evading humans earlier compared to the foals that were not handled at all or only handled on their left side.
Implications of the Research
- The results of this study lead to questions regarding the practices surrounding neonatal care both in animals and in humans, suggesting that possible modifications in these practices might be required.
- These findings underline the importance of early life experiences and their potential impacts on behavioural development and emotional reactivity.
Cite This Article
APA
de Boyer des Roches A, Durier V, Richard-Yris MA, Blois-Heulin C, Ezzaouïa M, Hausberger M, Henry S.
(2010).
Differential outcomes of unilateral interferences at birth.
Biol Lett, 7(2), 177-180.
https://doi.org/10.1098/rsbl.2010.0979 Publication
Researcher Affiliations
- UMR 6552 Ethologie Animale et Humaine, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France.
MeSH Terms
- Animals
- Animals, Newborn
- Emotions
- Female
- Handling, Psychological
- Horses / physiology
- Horses / psychology
- Male
- Physical Stimulation
- Time Factors
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This article includes 20 references
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Citations
This article has been cited 5 times.- Rochais C, Lerch N, Gueguen L, Schmidlin M, Bonamy O, Grandgeorge M, Hausberger M. Horses' Tactile Reactivity Differs According to the Type of Work: The Example of Equine-Assisted Intervention. Vet Sci 2023 Feb 7;10(2).
- Gueguen L, Lerch N, Grandgeorge M, Hausberger M. Testing individual variations of horses' tactile reactivity: when, where, how?. Naturwissenschaften 2022 Aug 11;109(5):41.
- Baragli P, Scopa C, Felici M, Reddon AR. Horses show individual level lateralisation when inspecting an unfamiliar and unexpected stimulus. PLoS One 2021;16(8):e0255688.
- André V, Henry S, Lemasson A, Hausberger M, Durier V. The human newborn's umwelt: Unexplored pathways and perspectives. Psychon Bull Rev 2018 Feb;25(1):350-369.
- Durier V, Henry S, Sankey C, Sizun J, Hausberger M. Locomotor Inhibition in Adult Horses Faced to Stressors: A Single Postpartum Experience May be Enough!. Front Psychol 2012;3:442.
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