NR ZDBP

AU Warriss,P.D.

TI The welfare of slaughter pigs during transport

QU Animal Welfare 1998; 7: 365-81

PT journal article

AB The welfare of transported pigs can be compromised both by physical and psychological stresses. The animals' responses can be assessed using records of mortality and trauma, physiological and behavioural observations and, to some degree, by measurements of meat quality since this can reflect the animals' physiological state at death. These assessments may, therefore, be used as measures of animal welfare. During transport pigs show weight loss, increased circulating concentrations of catecholamines, cortisol and creatine phosphokinase (CPK), and an increase in heart rate and packed cell volume; sometimes there is evidence of dehydration. Increased levels of dark, firm, dry (DFD) meat after long transport reflect muscle glycogen depletion and possibly indicate some element of fatigue. There is experimental evidence that transport is aversive to pigs,which may be partially due to the fact that they become travel sick. Mortality in transport has ranged from <0.1 to >1.0 per cent in different European countries. Mortality is higher in more stress-susceptible breeds and at higher ambient temperatures. It is increased in pigs fed within 4 h of transport, at higher stocking densities and after longer journeys at ambient tempertures greater than 10 deg C. Pigs may be fasted long enough before slaughter to prejudice their welfare through hunger. Long fasts may also reduce muscle glycogen levels and cause fatigue. Fighting beween unfamiliar animals whch have been mixed during the marketing procedure is also stressful, however, longer transport may actually reduce this problem by allowing animals to get used to one another under conditions in which it is difficult to fight.

SP englisch

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