Figure 1
From: Enteric methane emission of dairy cows supplemented with iodoform in a dose–response study

(a) Estimated marginal means of methane (CH4) yield (g CH4/kg dry matter intake (DMI)), treatment P < 0.01; linear P < 0.01; quadratic P ≤ 0.01 and intensity (g CH4/kg energy corrected milk (ECM)), treatment P < 0.01; linear P < 0.001; quadratic P = 0.03 (b) and hydrogen (H2) yield (g H2/kg DMI), treatment P < 0.01; linear P < 0.01; quadratic P = 0.06 and intensity (g H2/kg ECM), treatment P < 0.01; linear P < 0.001; quadratic P = 0.05 of dairy cows supplemented with four different levels of iodoform (0, 320, 640, and 800 mg/day) intra-ruminally twice daily (6:30 h and 16:30 h).