Table 2.

Comparison of body weight gain, food intake, and food efficiency ratio in rats fed the experimental diets for 5 weeks

Item	Normal	Control	CLA	N-CLA
Food intake and body weight gain (g/day)
Food intake	28.46 ± 1.23	27.50 ± 0.86	28.18 ± 0.21	28.49 ± 0.71
Body weight gain	2.40 ± 0.58a	2.89 ± 0.55a	2.89 ± 0.55a	1.37 ± 0.31b
FER*	0.08 ± 0.02a	0.10 ± 0.02a	0.11 ± 0.02a	0.05 ± 0.01b

Notes: Data are presented as the mean ± standard deviation (n = 5);

^*FER, food efficiency ratio = body weight gain/food intake;

^a,bmeans with different superscripts indicate significant differences (P < 0.05). Normal, rats fed a normal diet; control, rats fed a high-fat diet; CLA, rats fed a high-fat diet + 2% CLA; rats fed a high-fat diet + 2% N-CLA.

Abbreviations: CLA, conjugated linoleic acid; FER, food efficiency ratio; N-CLA, nanoemulsified water-soluble conjugated linoleic acid.