Fig. 1

Effects of RFI line and hygiene conditions on lipid byproducts in adipose tissue. Pigs from two genetic lines divergently selected for low (LRFI) or high (HRFI) RFI were housed in good or poor hygiene conditions during 6 weeks (period 1, challenge). Half of these pigs were killed at week 6, whereas another half were placed in good hygiene conditions until slaughter at weeks 13 to 14 (period 2, recovery). Thiobarbituric reactive substances (TBARS) were measured in perirenal adipose tissue (PRAT) at different time points along forced chemical oxidation, and expressed as malondialdehydes (MDA) concentration (nM/g tissue). Effects of genetic line, hygiene conditions and their interaction (LxH) were tested for repeated measures data of TBARS along the kinetics. ***P < 0.001; ** P < 0.01; *P ≤ 0.05. Dashed lines are used for poor hygiene conditions, and continuous lines are used for good hygiene conditions; red color is used for high RFI pigs and blue colour is used for low RFI pigs