INS and Insulin resistance: The insulin resistance index calculated by the HOMA model (HOMA-IR) using fasting serum levels of insulin (μIU/mL) and glucose levels (mmol/L) indicated that males and females of OF1-HCD group as well as females of MF1-HCD were insulin resistant compared to CF1-CD and CF1-HCD groups at the 5th week (Figure 3).