Effects of Farm Handling on Physiological Responses, Losses and Meat Quality of Commercial Pigs
Stressful transport to the slaughterhouse can result in more mortalities, an increase in non-ambulatory pigs, more condemned carcasses, and poorer meat quality. By decreasing the stress during transport there will be less economic loss, higher meat quality, and better animal welfare. Feed withdrawal before transport helps by reducing fatigue during transfer, making handling easier, lessening transport sickness, reducing carcass contamination, and improving meat quality (from increased pH). In older farm facilities corridors would have been designed for a lighter pig, and given that pig size has increased they may be too narrow for current pigs. This can lead to increased stress in loading, and increased injury. The use of electric prods has been shown to increase the heart rate of pigs throughout the transport, resulting in higher stress and more mortalities. Programs encouraging transporters to slow down, and hydraulic lifts are two final ways to reduce stress during transport. Using these strategies the stress during transport can be reduced, and economic losses minimized.