Fig. 2

Effect of different doses of menthol-rich plant bioactive lipid compounds (PBLC) on a the circadian distribution of eating time and b feeder visits in sheep. Sheep (n = 8 per treatment) were fed diets containing 0 mg/d (control), 80 mg/d (PBLC-L) and 160 mg/d of PBLC (PBLC-H), respectively. Concentrates were fed at 07:00, 11:00 and 15:00 h of the day. Because interaction effect for feeder visits was significant, ‘slice’ option in the SAS mixed model was used to detect the significant difference at a time point and subsequently mixed model procedures were employed to analyse the treatment effect at that particular time point using Fisher’s protected least square difference test. ^a-cMeans followed by different letters within a time point differ at P < 0.05. ^x-yMeans followed by different letters within a time point differ at P < 0.10. Trt, treatment; SEM, standard error of mean