PSX-A-5 Effects of High- and low-Fiber Diets on Growth Performance and Intestinal Oxidative Stress in Growing-Finishing Pigs

Abstract Feed is the most expensive input in commercial pork production. In order to reduce feed costs, using high-fiber ingredients has become a common practice. Moderate levels of fiber can maintain intestinal physiological function and promote health. Oxidative stress linked impaired nutrient absorption growth performance. This study investigated effects (HF, 6% crude fiber) low-fiber (LF, 3% diets on performance oxidative parameters growing-finishing pigs. Forty growing pigs (27.07 ± 1.26 kg BW) were randomly assigned 2 treatments with 10 replicates per pen. Pigs weighed days 35, 42 70. The intake was recorded daily calculate parameters. On day 70, eight each treatment group selected euthanized obtain jejunum measure status. fed an HF diet heavier than those LF 70 (P < 0.05). During whole feeding period, had higher average gain resulted increased malondialdehyde 0.05) jejunum, suggesting that contributed jejunum. also led significant increase glutathione oxidized indicating needed produce more antioxidant substances cope intestine. accompanied by glutamate-cysteine ligase These results suggest improve health reducing stress.