Table 2.

Effects of concentrate supplementation on body weight and blood indices of grazing heifers.

Items	CON	SUP	P-value
Body weight (kg)
Day 1 of the trial	217.33 ± 5.19	215.01 ± 4.68	0.632
Day 60 of the trial	245.53 ± 6.52	260.55 ± 7.86	0.027
ADG (kg)	0.470 ± 0.083	0.759 ± 0.132	0.011
Triglyceride (mmol/l)
Day 1 of the trial	0.36 ± 0.04	0.33 ± 0.02	0.317
Day 60 of the trial	0.41 ± 0.02b	0.52 ± 0.05a	0.016
CHO (mmol/l)
Day 1 of the trial	7.66 ± 0.32	7.18 ± 0.19	0.412
Day 60 of the trial	7.85 ± 0.65	10.12 ± 0.373	0.022
TP (mg/ml)
Day 1 of the trial	117.26 ± 10.51	121.58 ± 12.69	0.262
Day 60 of the trial	123.50 ± 16.52	147.98 ± 19.11	0.001
ALB (mg/ml)
Day 1 of the trial	57.73 ± 4.57	58.02 ± 5.66	0.158
Day 60 of the trial	58.40 ± 6.29	69.63 ± 8.32	0.071
Leptin (ng/ml)
Day 1 of the trial	5.10 ± 0.43	5.29 ± 0.65	0.671
Day 60 of the trial	5.78 ± 0.55b	7.19 ± 0.81a	0.001

^{a, b} Means bearing different superscripts in the same row differ significantly (P <0.05).