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Behavioural and hormonal responses of pigs during transport: effect of mixing and duration of journey

  • R. H. Bradshaw (a1), R. F. Parrott (a2), J. A. Goode (a2), D. M. Lloyd (a2), R. G. Rodway (a3) and D. M. Broom (a1)...


Two experiments investigated the welfare of pigs during transport. In experiment 1, 12 groups offour 90-kg pigs were transported to slaughter in a commercial livestock lorry for 1·5 h. Half the animals were transported in their social groups (unmixed condition) and half were transported with groups of previously unfamiliar pigs mixed together (mixed condition). Behaviour was recorded, a general activity index scored and saliva samples taken at different stages of the journey for analysis ofcortisol. Pigs spent most of their time standing in both conditions. The journey was very rough (as revealed by characterization with an accelerometer) and in the unmixed condition the pigs appeared to stand to reduce travel sickness. In contrast, in the mixed condition, this preference for standing seemed to be due to fighting which stressed and exhausted the animals (the general activity index was three times the unmixed condition). Levels of salivary cortisol were higher in the mixed condition at the beginning, middle and end of the journey. In experiment 2, six 35-kg pigs, prepared in advance with jugular vein catheters, were loaded onto a commercial livestock lorry (09.30 h) where they were individually penned. The vehicle remained stationary with the engine off and blood samples were taken at 30-min intervals during the next 8 h (control). Two days later this procedure was repeated while the vehicle was driven for 8 h (on main roads and motorways). Plasma concentrations of cortisol and beta-endorphin increased markedly in both conditions immediately after loading. Cortisol levels were greater (relative to control) at the beginning, in the middle and at the end of the journey. Concentrations of beta-endorphin did not differ between control and experimental conditions except during the final 180 min of the journey when the control levels were higher.



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Becker, B. A., Mayes, H. F., Hahn, G. L., Nienaber, J. A., Jesse, G. W., Anderson, M. E., Heymann, H. and Hedrick, H. B. 1989. Effect of fasting and transportation on various physiological parameters and meat quality of slaughter hogs. Journal of Animal Science 67:334341.
Becker, B. A., Nienaber, J. A., DeShazer, J. A. and Hahn, G. L. 1985. Effect of transportation on cortisol concentrations and on the circadian rhythm of cortisol in gilts. American journal of Veterinary Research 46:14571459.
Bradshaw, R. H., Hall, S. J. G. and Broom, D. M. 1995. Behaviour of pigs and sheep during road transport. Animal Science 60:557 (abstr.).
Brown, S. N., Knowles, T. G., McKinstry, J. L., Edwards, J. E., Anil, M. H. and Warriss, P. D. 1993. Patterns of response of some physiological indices of stress in pigs negotiating loading ramps. Animal Production 56:439 (abstr.).
Cooper, T. R., Trunkfield, H. R., Zanella, A. J. and Booth, W. D. 1989. An enzyme-linked immunosorbent assay for cortisol in the saliva of man and domestic farm animals. journal of Endocrinology 123:R1316.
Dalin, A. M., Magnusson, U., Haggendal, J. and Nyberg, L. 1993. The effect of tranport stress on plasma levels of catecholamines, cortisol, corticosteroid-binding globulin, blood cell count, and lymphocyte proliferation in pigs. Ada Veterinaria Scandinavica 34:5968.
Dalin, A. M., Nyberg, L. and Eliasson, L. 1988. The effect of transportation/relocation on cortisol, CBG and induction of puberty in gilts with delayed puberty. Ada Vdcrinaria Scandinavica 29:207218.
Fordham, D. P., Lincoln, G. A., Ssewannyana, E. and Rodway, R. G. 1989. Plasma (β-endorphin and cortisol concentrations in lambs after handling, transport and slaughter. Animal Production 49:103107.
Geers, R. 1995. A modulating effect of beta-endorphin on pigs' coping strategies during transport. Physiology and Behavior 57:10571060.
Geers, R., Bleus, E., Schie, T. van, Ville, H., Gerard, H., Janssens, S., Nackaerts, G., Decuypere, E. and Jourquin, J. 1994. Transport of pigs different with respect to the Halothane gene: stress assessment. journal of Animal Science 72:25522558.
Geverink, N., Bradshaw, R. H., Lambooy, E. and Broom, D. M. 1996. Handling of slaughter pigs in lairage: behavioural and physiological effects. In Methods of improving pig welfare by reducing stress and discomfort slaughter (ed. Schiitte, A.). Bundesforschunganstalt für Landwirtschaft, Institut für Tierzucht und Tierverhalten, Mariensee, Germany.
Guise, H. J. and Penny, R. H. C. 1989. Factors influencing the welfare and carcass and meat quality of pigs. 2. Mixing unfamiliar pigs. Animal Production 49:517521.
Jensen, P. 1994. Fighting between unacquainted pigs—effects of age and of individual reaction pattern. Applied Animal Behaviour Science 41:3752.
Lambooy, E. 1988. Road transport of pigs over a long distance: some aspects of behaviour, temperature and humidity during transport and some effects of the last two factors. Animal Production 46:257263.
Lambooy, E. and Engel, B. 1991. Transport of slaughter pigs by truck over a long distance: some aspects of loading density and ventilation. Livestock Production Science 28:163174.
Nyberg, L., Lundstrom, K., Edfors-Lilja, I. and Rundgren, M. 1988. Effects of transport stress on concentrations of cortisol, corticosteroid-binding globulin and glucocorticoid receptors in pigs with different halothane genotypes. Journal of Animal Science 66:12011211.
Parrott, R. F. and Goode, J. A. 1992. Effects of intracerebroventricular corticotropin-releasing hormone and intravenous morphine on cortisol, prolactin and growth hormone secretion in sheep. Domestic Animal Endocrinology 9:141149.
Parrott, R. F. and Misson, B. H. 1989. Changes in pig salivary cortisol in response to transport simulation, food and water deprivation, and mixing. British Veterinary Journal 145:501505.
Parrott, R. F., Misson, B. H. and Baldwin, B. A. 1989. Salivary cortisol in pigs following adrenocorticotrophic hormone stimulation: comparison with plasma levels. British Veterinary Journal 145:362366.
Randall, J. M. 1993. Environmental parameters necessary to define comfort for pigs, cattle and sheep in livestock transporters. Animal Production 57:299307.
Rojanasthien, S. 1989. Effect of transportation and relocation in post-weaning anoestrous primiparous sows. Ada Veterinaria Scandinavica 30:18.
Shaw, F. D. and Tume, R. K. 1990. Beta-endorphin as a stress indicator in the pig. In Proceedings of the eleventh International Pig Veterinary Society Congress, p.427.
Spencer, G. S. G., Wilkins, L. J. and Hallett, K. G. 1984. Hormone and metabolic changes in the blood of pigs following loading and during transport and their possible relationship with subsequent meat quality. In Proceedings of the thirtieth European Meeting of Meat Research Workers, pp.1516.
Tan, S. S. L. and Shackleton, D. M. 1990. Effects of mixing unfamiliar individuals and of azaperone on the social behaviour of finishing pigs. Applied Animal Behaviour Science 26:157168.
Warriss, P. D., Bevis, E. A., Edwards, J. E., Brown, S. N. and Knowles, T. G. 1991. Effect of the angle of slope on the ease with which pigs negotiate loading ramps. Veterinary Record 128:419421.
Warriss, P. D. and Brown, S. N. 1985. The physiological responses to fighting in pigs and the consequences for meat quality. Journal of the Science of Food and Agriculture 36:8792.


Behavioural and hormonal responses of pigs during transport: effect of mixing and duration of journey

  • R. H. Bradshaw (a1), R. F. Parrott (a2), J. A. Goode (a2), D. M. Lloyd (a2), R. G. Rodway (a3) and D. M. Broom (a1)...


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