Methane energy loss per kg metabolic body size decreased (P=0.024) linearly with
increasing LLLT supplementation. The relative magnitude of decrease from the unsupplemented
treatment to the highest level of supplementation was 16%. Methane energy loss
as proportion of GE and DE or methane production in terms of litre per day or litre per kg
digested DM (Table 4) were unaffected by treatment.