Fig. 1.

Various seaweed species (0.2 g OM/seaweed species; green-, brown-, and red-seaweed) and in vitro methane (CH₄) production (mL/g OM) (Adapted from Machado et al., 2014). Con = Control (1 g of Flinders grass + 0.2 g of decorticated cottonseed meal as a positive control, OM basis). Samples of 1 g of Flinders grass + 0.2 g of all other seaweed (OM basis) were used in this study). C. coelothrix = Cladophora coelothrix; C. patentiramea = Cladophora patentiramea; U. ohnoi = Ulva ohnoi. Pooled rumen fluid as an in vitro inoculum was collected from three fistulated steers (Bos indicus) fed Flinders grass (Iseilema membranacea) hay. A arrow indicates a lower CH₄ production from seaweed species.