Influence of lairage time on some welfare and meat quality parameters in pigs
2002
A total of 150 Large White cross Landrace pigs (110-120 kg) of both sexes were used to investigate the effects of three different lairage times (0 h, 3 h, 9 h). Blood samples were collected at exanguination and cortisol, glucose, lactate, muscle enzymes and haematological parameters were determined. Post-mortem measurements of muscle pH were taken at 20 min, 2 h and 24 h from Longissimus thoracis and Semimembranosus. Lairage time showed a significant effect on pH24, inter- nal muscle reflectance using the fibre optic probe (FOP24), red blood cells, neutrophils and lympho- cytes, glucose and enzymatic activities. Changes in blood profile and meat quality parameters indicated that three hours of lairage in Spanish commercial conditions may reduce the amount of stress exhibited by pigs at slaughter and better meat quality can be obtained. No lairage or an exces- sively long lairage period without food may compromise animal welfare and meat quality. lairage / welfare / stress / meat quality / pigs
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