Abstract: The objectives of the present study were to evaluate the effects of increasing space in transportation at different distances, on live weight loss in pigs and to determine the effects of fasting and pre-slaughter lairage period on both live and carcass weights by sex and on pork quality. Seven hundred and twenty pigs Pietrain x (YorkshirexLandrace) were divided into two experimental conditions (EC1 and EC2). EC1 pigs were divided in three groups of 120 animals each and were transported for 8, 16 and 24 h (loading density: 0.35 m2/100 kg). EC2 pigs were divided in three groups of 120 animals, the transport duration was the same as in EC1 (loading density: 0.68 m2/100 kg). Transport duration and space allowance significantly affected (p< 0.01) the posture of the pigs on arrival to the slaughterhouse; there were significant differences (p< 0.01) between genders. When transport time was shorter, a higher number of pigs arrived in a standing posture, more females arrived in a standing position in the group shipped for 8 h. Pig position affected carcass yield, when transportation time was shorter carcass yield was higher. There was a higher percentage (p< 0.01) of pigs at pH 5.8-6.2 in animals transported for 8 h, compared with 16 and 24 h period, independently of the space allowance. Additional space provided to pigs during transportation lead to a better animal welfare in transit and had no decisive influence in the quality of the carcass; nevertheless, the quality of meat improved.