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. 2024 Oct 24;14:25249. doi: 10.1038/s41598-024-76451-5

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Behaviours of pigs (n = 28) during the test sessions for which test type or the interaction of test type × day were statistically significant based on post-hoc pairwise comparisons. (a) Total duration of exploring the pen; (b) Total number of times moving towards the human; (c) Total number of times moving away from the human; (d) Total number of behavioural transitions; (e) Total number of low-pitched vocalisations. Red triangle = estimated mean; horizontal line within box = median; lower and upper edge of box = 1st and 3rd quartile; error bars = 95% confidence intervals; grey dots = raw data points. FF free form, IC imposed contact, D1 day 1, D2 day 2. *p < .05; **p < .01; ***p < .001.