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Alarm Pheromones in Urine Modify the Behaviour of Weaner Pigs

Published online by Cambridge University Press:  11 January 2023

J R Amory  and
G P Pearce
J R Amory
Affiliation:
Animal Science Research Centre, Harper Adams University College, Newport, Shropshire TF10 8NB, UK
G P Pearce*
Affiliation:
Animal Science Research Centre, Harper Adams University College, Newport, Shropshire TF10 8NB, UK
*
† Contact for correspondence and requests for reprints at: EpiCentre, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
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Abstract

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Pigs undergoing an alarming experience may produce olfactory stimuli (pheromones) in their urine, which may have consequences for the welfare of other pigs exposed to these stimuli. Twelve young adult female pigs (gilts) were restrained for 30min in feeding stalls (a potentially alarming experience) and any urine produced was collected. Six gilts had previously experienced the procedure (experienced gilts), and six gilts had not (inexperienced gilts). The gilts’ behaviour was recorded over the 30min period. The inexperienced gilts exhibited significantly more escape behaviour (P < 0.001) and less exploratory behaviour (p < 0.05) than those which had prior experience of restraint.

Twelve weaner pigs (30 days old) were subsequently individually exposed to the urine from inexperienced gilts, the urine from experienced gilts and a water control in an open field test. The ambulation score in the open field test was significantly higher (P < 0.01) when weaners were exposed to the urine from inexperienced gilts compared to the other two treatments. The weaners were then presented with a feeder containing feed sprayed with the treatment samples. The weaners took significantly longer to approach the feeder sprayed with the urine from the inexperienced gilts (P < 0.05) and performed significantly more eating bouts (P < 0.05) that were significantly shorter compared with the water control (P < 0.05). Total number of vocalizations (P < 0.01) and grunts (P < 0.05) were significantly greater in those pigs exposed to the inexperienced gilts’ urine. These results indicate that urinary alarm pheromones were produced by the inexperienced gilts during restraint in the feeding stall and that these pheromones significantly modified the behaviour of weaner pigs subsequently exposed to them. Exposure to such pheromones is likely to adversely affect the welfare of pigs.

Keywords

alarm pheromonesanimal welfarebehaviourfeeding motivationpigs
Type
Research Article
Information
Animal Welfare , Volume 9 , Issue 2 , May 2000 , pp. 167 - 175
Copyright
© 2000 Universities Federation for Animal Welfare

References

Blecha, F and Kelley, K W 1981 Effects of cold and weaning stressors on the antibody-mediated immune response of pigs. Journal of Animal Science 53: 439–447CrossRefGoogle ScholarPubMed
Cocke, R and Thiessen, D D 1990 Alarm odors suppress the immune system. In: Macdonald, D W, Müller-Schwarze, D and Natynczuk, S E (eds) Chemical Signals in Vertebrates V pp 125–131. Oxford University Press: Oxford, UKGoogle Scholar
Fraser, D 1974 The vocalisations and other behaviour of growing pigs in an ‘open field’ test. Applied Animal Ethology 1: 3–16CrossRefGoogle Scholar
Lawes Agricultural Trust 1995 Genstat V release 3.2 for Windows. Rothamsted Experimental Station: Rothamsted, UKGoogle Scholar
McGIone, J J 1985 Olfactory cues and pig agonistic behavior: evidence for a submissive pheromone. Physiology and Behavior 34: 195–198CrossRefGoogle Scholar
McGlone, J J, Curtis, S E and Banks, E M 1987 Evidence for aggression-modulating pheromones in prepubertal pigs. Behavioral and Neural Biology 47: 27–39CrossRefGoogle Scholar
Morrow-Tesch, J L and McGlone, J J 1990 Sensory systems and nipple attachment behavior in neonatal pigs. Physiology and Behavior 47: 1–4CrossRefGoogle ScholarPubMed
Milller-Schwarze, D 1971 Pheromones in black-tailed deer (Odocoileus hemionus columbianus). Animal Behaviour 19: 141–152CrossRefGoogle Scholar
Pearce, G P and Hughes, P E 1987a An investigation of the roles of boar component stimuli in the expression of proceptivity in the female pig. Applied Animal Behaviour Science 18: 287–299CrossRefGoogle Scholar
Pearce, G P and Hughes, P E 1987b The influence of boar component stimuli on puberty attainment in the gilt. Animal Production 44: 293–302Google Scholar
Pearce, G P and Paterson, A M 1992 Physical contact with the boar is required for maximum stimulation of puberty in the gilt because it allows transfer of boar pheromones and not because it induces Cortisol release. Animal Reproduction Science 27: 209–224CrossRefGoogle Scholar
Pluske, J R and Williams, I H 1996 Reducing stress in piglets as a means of increasing production after weaning: administration of amperozide or co-mingling of piglets during lactation? Animal Science 62: 121–130CrossRefGoogle Scholar
Schrader, L and Todt, D 1998 Vocal quality is correlated with levels of stress hormones in domestic pigs. Ethology 104: 859–876CrossRefGoogle Scholar
Siegel, S 1956 Nonparametric Statistics for the Behavioral Sciences. McGraw-Hill: New York, USAGoogle Scholar
Snedecor, W G and Cochran, W G 1980 Statistical Methods, 7th edition. Iowa State University Press: Ames, USAGoogle Scholar
van Veen, H M, Vellenga, L and Hoogergrugge, A 1985 Mortality, morbidity and external injuries in piglets housed in two different housing systems. Veterinary Quarterly 7: 127–132CrossRefGoogle ScholarPubMed
Vieuille-Thomas, C and Signeret, J P 1992 Pheromonal transmission of an aversive experience in domestic pigs. Journal of Chemical Ecology 18: 1551–1557CrossRefGoogle Scholar
von Borell, E and Hurnik, J F 1991 Stereotypic behavior, adrenocortical function and open field behavior of individually confined gestating sows. Physiology and Behavior 49: 709–713CrossRefGoogle ScholarPubMed
von Borell, E and Ladewig, J 1992 Relationship between behavior and adrenocortical response pattern in domestic pigs. Applied Animal Behaviour Science 34: 195–206CrossRefGoogle Scholar
Weary, D M and Fraser, D 1995 Signalling need: costly signals and animal welfare assessment. Applied Animal Behaviour Science 44: 159–169CrossRefGoogle Scholar
Weary, D M, Lawson, G L and Thompson, B K 1997a Sows show stronger responses to isolation calls of piglets associated with greater levels of piglet need. Animal Behaviour 52: 1247–1253CrossRefGoogle Scholar
Weary, D M, Ross, S and Fraser, D 1997b Vocalizations by isolated piglets: a reliable indicator of piglet need directed towards the sow. Applied Animal Behaviour Science 53: 249–257CrossRefGoogle Scholar