Figure 1.

Impact of lipid peroxidation on total gain of pens of pigs during the 43-d nursery period. Levels of peroxidation were represented by a control diet with 5% refined, bleached, and deodorized corn oil (0% peroxidation) and a diet with 5% peroxidized corn oil (100% peroxidation). Intermediate diets were created by mixing the control and peroxidized diets on-farm. Peroxidized corn oil was created by heating (65 °C) corn oil with constant air supply (20 L/min) for 12 d. Oil was stabilized with liquid antioxidant (TBHQ) after peroxidation. Each value represents the mean of 20 pens with 22 pigs per pen (at the start of the study). Pen gain represents the total pig weight produced per pen and was calculated as total of weight of viable pigs present in each pen at the end of the study minus the sum of the weight of pigs in each pen at the start of the study.