Table 1.

Summary of sheep methane measurement experiments in Australia (Bond et al., 2017) and New Zealand (Xiang et al., 2016a).

Locale	Breeds	Sex	Age (mo.)	Feeding regime	Forage type	DEa	Rumen sampling	Block	Animals	Diet conditions
AUS	Merino	♀	∼30	08:00 and 16:00	lucerne: oat chaff (50:50)	12.1	10:00–11:00	1	16	1.5 × maintenance
								2	16
								3	14
								4	16
NZ	Compositeb	♀	∼9	08:30 and 15:30	cut rye grass pasture	11.6 poor 12.2 good	before morning feed	na	6	good+1.0 × maintenance
									6	poor+1.0 × maintenance
									6	good+1.5 × maintenance
									6	poor+1.5 × maintenance

^aDigestible energy (MJ/kg DMI) was calculated by converting metabolizable energy of the AUS experiment. The rumen sampling in the AUS experiment took place 2–3 h post feeding (Bond et al., 2017). For the NZ experiment, digestible energy was calculated from gross energy and in vitro digestibility (see methods). ^bSee details in Pinares-Patino et al. (2013).