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Porcine Health Manag


Title:Effect of wither application of an analogue of pig appeasing pheromone on encounters between unfamiliar mini-pigs
Author(s):Marcet-Rius M; Mendonca T; Pageat P; Arroub S; Bienboire-Frosini C; Chabaud C; Teruel E; Cozzi A;
Address:"IRSEA (Research Institute in Semiochemistry and Applied Ethology), Quartier Salignan, 84400, Apt, France. m.marcet@group-irsea.com. IRSEA (Research Institute in Semiochemistry and Applied Ethology), Quartier Salignan, 84400, Apt, France"
Journal Title:Porcine Health Manag
Year:2022
Volume:20221214
Issue:1
Page Number:50 -
DOI: 10.1186/s40813-022-00294-7
ISSN/ISBN:2055-5660 (Print) 2055-5660 (Electronic) 2055-5660 (Linking)
Abstract:"BACKGROUND: The practice of mixing unfamiliar pigs on farms is common but results in fighting, welfare problems and performance issues. Pigs have different ways of resolving social conflicts, including aggressive and affiliative behaviours. Synthetic appeasing pheromones have demonstrated many positive effects in animal husbandry and are regularly used by breeders to improve animal welfare and performance. The aim of the study was to investigate the effect of a new method of applying pig appeasing-pheromone (PAP) to the withers in an experimental model of pig mixing to determine whether PAP reduced aggression and fighting, increased prosocial behaviours, and improved behavioural and physiological indicators of welfare. RESULTS: PAP reduced fighting between mini-pigs (df = 1; F = 13.47; P = 0.001; mixed logistic regression). Even if not significant, agonistic behaviours tended to be reduced when the treatment was applied (df = 1; F = 4.14; P = 0.058; mixed logistic regression). Likewise, mini-pigs seemed to be scored as not aggressive at all (df = 1; F = 3.61; P = 0.070; GLMM) and to be less aggressive toward the other pig than when placebo was applied. Concerning the latency of the first contact without aggression, a significant effect was found between the PAP and placebo groups (df = 1; chi(2) = 4.74; P = 0.0295; Cox model). Moreover, even if not significant, the treated mini-pigs seemed to spent more time looking at each other (df = 1; F = 3.59; P = 0.071; GLMM) and immobile and/or ground sniffing (df = 1; F = 3.18; P = 0.088; GLMM) than those that received placebo. No significant difference was found between groups for salivary cortisol concentration (df = 1; F = 0.10; P = 0.752; GLMM), but variances between groups were heterogeneous at every time. No significant difference was found between groups regarding alpha-amylase activity (df = 1; F = 0.25; P = 0.621; GLMM), but variances between groups were heterogeneous at T0, T1 and T3. These results indicate that the variability (dispersion) within each group was lower when PAP was applied than when the placebo was applied. CONCLUSIONS: The new method of applying PAP improved welfare of mini-pigs (as models of domestic pigs) by reducing fighting, among other interesting results. PAP seems thus a promising biomimetic tool to enhance animal welfare in pig production systems"
Keywords:Agonistic behaviour Animal welfare Appeasing pheromones Fighting in pigs Mixing of pigs Prosocial behaviours Salivary alpha-amylase Salivary cortisol;
Notes:"PubMed-not-MEDLINEMarcet-Rius, Miriam Mendonca, Tiago Pageat, Patrick Arroub, Sana Bienboire-Frosini, Cecile Chabaud, Camille Teruel, Eva Cozzi, Alessandro eng England 2022/12/14 Porcine Health Manag. 2022 Dec 14; 8(1):50. doi: 10.1186/s40813-022-00294-7"

 
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Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
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