Table 4 Means (± SEM) of methane production and other performance parameters as affected by grazing system

BCS

3.22^a ± 0.018

3.06^b ± 0.018

< 0.0001

Body weight (kg)

410.34^a ± 2.397

381.77^b ± 2.405

< 0.0001

DMI (kg/day)

11.49^a ± 0.065

9.93^b ± 0.065

< 0.0001

CH₄ (g/day/head)

240.30^b ± 3.339

251.90^a ± 3.350

< 0.0144

CH₄ (g/kg DMI)

21.49^b ± 0.538

26.42^a ± 0.540

< 0.0001

CH₄ (g/100 kg body weight)

60.16^b ± 1.408

68.72^a ± 1.413

< 0.0001