Boar Presence Reduces Fighting in Mixed Slaughter-Weight Pigs

The article studies the presence of boars in reducing fighting in the groups of pigs therefore reducing skin blemishes.

Effect of Naltrexone on Relaxation Induced by Flank Pressure in Pigs

The study injected ten pigs with Naltrexone and ten pigs a saline injection to study the effects on relaxation. In the end, the study discovered that "treatment had no effect on the final degree of relaxation", but "pressure on the sides of a pig's body in a comfortable padded apparatus will induce pigs to relax".

The Welfare of pigs during Transport and Slaughter

The article researches "electric stunning, carbon dioxide stunning, pig behaviour during handling, return to sensibility, facility design, truck loading, density and transport stress".