01841nam a2200145 a 450000100080000000500110000800800410001910000160006024500800007626001460015652013260030265300190162870000180164770000300166510591782018-10-09       2014    bl uuuu     u01u1 u    #d1 aCOSTA, F.O.  aAnimal welfare according to lairage time in Uruguay.h[electronic resource]  aIn: INTERNATIONAL CONGRESS OF MEAT SCIENCE AND TECHNOLOGY (ICoMST), 60., 2014, Punta del Este, Uruguay. Proceedings... Montevideo: INIAc2014  aThe aim of this study was to evaluate the effect of pre slaughter lairage time on cattle welfare. Thirty Hereford steers were randomly grouped in two treatments according to lairage time in the abbatoir pens: 12 hours (Treatment 1, n = 15) and 3 hours (Treatment 2, n = 15). The behavioral records were obtained through the identification of body posture (standing) and frequency of negative behaviors (mounts and fighting). Blood samples were taken from all animals searching for basal values in Creatine phosphokinase (CPK) as a welfare indicator and also its changes at different pre slaughter periods. Muscle samples were extracted from Longissimus thoracis et lumborum (LM) muscles 45 minutes post mortem, to determine glycogen concentration. Data was analyzed by SAS software applying GLM and GLIMMIX procedures. All animals were standing during the first 3 hours and negative behavior showed the highest frequency during the first 3 hours in both treatments. Animals in Treatment 2 showed an increase in CPK concentration after lairage. Additionally, Treatment 2 (3 hours) had lower values of muscle glycogen concentration. In conclusion, is possible to infer that the animals that remained in pens (Tretament 1) could rest and recover after wards, being this not possible for animals in the shorter lairage group.  aANIMAL WELFARE1 aDEL CAMPO, M.1 aPARANHOS DA COSTA, M.J.R.