Table 2 Means (± SEM) of methane production and weight accumulation as affected by age

Body weight (kg)

3.13^a ± 0.022

3.14^a ± 0.022

3.16^a ± 0.022

0.5895

DMI (kg/day)

282.60^c ± 2.912

409.52^b ± 2.963

496.05^a ± 2.947

< 0.0001

CH₄ (g/day/head)

7.65^c ± 0.079

11.06^b ± 0.080

13.41^a ± 0.080

< 0.0001

CH₄ (g/kg DMI)

176.32^c ± 4.057

267.71^b ± 4.127

294.27^a ± 4.106

< 0.0001

CH₄ (g/100 kg body weight)

24.61^a ± 0.654

24.96^a ± 0.665

22.30^b ± 0.662

0.1035

Body weight (kg)

66.12^a ± 1.711

67.24^a ± 1.741

59.97^b ± 1.732

0.0901