161 Effect of High- and low-Fiber Diets on Growth Performance in Growing-Finishing Pigs Selected for low or High Feed Efficiency

Abstract Understanding the effects of high- and low-fiber diets on growth performance pigs with different feed efficiencies will help livestock industry develop new strategies to reduce costs pig production. In this study, 18 Landrace × Large White sows high low estimated breeding value conversion ratio (EBV-FCR) were inseminated semen from known EBV-FCR produce 9 litters efficiency pigs. A total 94 growing or fed a (3% crude fiber) high-fiber (6% content diet in 2 factorial arrangement for 70 days. Pigs presented higher body weight (BW) day (P < 0.05). High lower average daily intake (ADFI) (FCR) than 0 (P< There was an interaction between fiber group gain (ADG;P 0.05) FCR 35. Low showed lowest ADG Regardless groups, 42 These results suggest that can present ADFI without reducing final BW ADG. Feeding increase later stages experiment.