Table 4.

Standardized mean difference (SMD) and 95% CI of enteric CH₄ emissions of ruminants supplemented with tannins.

Source	Effect size (SMD)	95% CI
		Lower	Upper
Acacia cornigera	−0.49	−1.92	0.92
Acacia mearnsii	−0.58	−1.24	0.06
Acacia nilotica	−0.76	−5.53	3.9
Albizia lebbekoides	−0.78	−2.26	0.70
Caesalpinia gaumeri	0.15	−0.98	1.28
Calliandra calothyrsus	−0.93	−1.96	0.09
Castanea sativa	−0.67	−1.32	−0.01
Flemingia macrophylla	−2.21	−3.53	−0.89
Gliricidia sepium	−0.13	−2.23	1.96
Havardia albicans	0.21	−0.91	1.35
Hedysarum coronarium	−0.06	−0.75	0.63
Leucaena leucocephala	−1.46	−1.95	−0.97
Manihot esculenta	0.02	−1.93	1.99
Mimosa caesalpiniaefolia	1.77	−0.56	4.12
Musa spp	−0.88	−6.28	4.50
Neomillspaughia emargiata	0.04	−1.08	1.17
Piscidia piscipula	−0.03	−1.16	1.09
Quercus aegilops	−0.50	−1.15	0.14
Samanea saman	−2.02	−3.17	−0.86
Schinopsis balansae	−0.54	−1.20	0.10
Schinopsis lorentzii	−3.31	−6.88	0.26
Schinopsis quebracho	0.021	−0.54	0.58
Styzolobium aterrimum	−0.23	−1.85	1.38
Tabernaemontana amygdalifolia	−0.12	−1.26	1.00
Vigna unguiculata	2.07	0.79	3.32
Gliricidia sepium+Enterolobium cyclocarpum+Brachiaria brizantha sepium	−0.28	−1.09	0.52

SMD is the standardized mean difference estimated of the random model.