Author/Authors :
Mota-Rojas، نويسنده , , D. and Becerril-Herrera، نويسنده , , M. and Roldan-Santiago، نويسنده , , P. and Alonso-Spilsbury، نويسنده , , M. and Flores-Peinado، نويسنده , , S. and Ramيrez-Necoechea، نويسنده , , R. and Ramيrez-Telles، نويسنده , , J.A. and Mora-Medina، نويسنده , , P. and Pérez، نويسنده , , M. and Molina، نويسنده , , E. and Sonي، نويسنده , , E. and Trujillo-Ortega، نويسنده , , M.E.، نويسنده ,
Abstract :
The aim of the study was to evaluate the effect of two stressful stimuli, long transportation and 80% CO2 stunning on metabolic–physiological variables, hemodynamic and gas exchange in slaughter pigs imported from the U.S. to Mexico City with a journey time of 27 h, with 8 h of lairage at the abattoir. A total of 589 pigs from three genders were monitored. Overall results show that both stimuli caused metabolic and physiological disturbance. Gilts were more efficient in controlling glycemia after a long transport journey (24 h), than castrated males (P < 0.05), whose glucose was increased above the 30 mg/dL basal level. Females on arrival had 23 mg/dL more lactate compared to basal levels (P < 0.05). Stunning caused more physiological effects compared to transportation. Regarding the gender factor, females and entire males were more susceptible to transport stress and stunning compared to the castrated pigs, and entire males showed more complications restoring the gas exchange compared to females and barrows.
Keywords :
CO2 stunning , transport , animal welfare , pigs , Blood variables
