Effects of trailer design on animal welfare parameters and carcass and meat quality of three Pietrain crosses being transported over a long distance.

摘要: This study aimed at evaluating the effects of trailer design on stress responses and meat quality traits 3 different pig crosses: 50% Pietrain breeding with halothane (HAL)(Nn) (50Nn); HAL(NN) (50NN); 25% genotype (25NN). Over a 6-wk period, pigs (120 pigs/crossbreed) were transported for 7 h in either pot-belly (PB) or flat-deck (FD) (10 pigs/crossbreed(-1)·trailer(-1)·wk(-1)). Temperature (T) relative humidity (RH) monitored each trailer. Behaviors during loading unloading, time to load unload, latency rest lairage recorded, whereas sub-population (4 pigs/crossbreed(-1)·trailer(-1)·wk(-1)) was equipped gastro-intestinal tract (GIT) temperature monitors. Blood samples collected exsanguination measurement cortisol, creatine kinase (CK), lactate, haptoglobin, Pig-MAP concentrations. Meat data 24 postmortem from LM semimembranosus (SM) adductor (AD) muscles all 360 pigs. Greater T recorded PB transportation (P = 0.006) unloading < 0.001). Delta GIT greater 0.01) unloaded PB. At loading, tended move backwards more 0.06) when loaded FD than an interaction found between type crossbreed type, frequency overlaps 50NN 25NN slips/falls 50Nn Cortisol concentrations slaughter 0.02) lactate 0.003) CK 0.001) As expected, produced leaner carcasses, dressing percentages, as well lower ultimate pH values drip loss percentages 0.002) losses paler color (greater L* values, P SM When used long distance under controlled conditions, no detrimental animal welfare pork quality. Pigs crossbreeding appear be responsive transport stress, having potential produce acceptable carcass quality, provided are free HAL gene.