Item

Treatment

CON

EO

P Value

CH₄ production, g/day

438.3

411.4

0.007

CH₄, g/kg milk

17.2

13.8

<0.001

CH₄, g/kg FCM

15.6

12.7

<0.001

CH₄, g/kg ECM

15.8

12.9

<0.001