. 2018 Dec 18;9:89. doi: 10.1186/s40104-018-0305-6

Table 1.

Data sources and characteristics of the studies included in the meta-analysis

Source	Trials	Animal	Defaunation duration	Outcomes
Belanche et al. [44]	2	Sheep	23 wk	VFA, digestibility
Bird et al. [11]	2	Sheep	11, 26 wk	CH₄, VFA, digestibility
Chandramoni et al. [45]	2	Sheep	5, 11 wk	CH₄, digestibility
Chaudhary and Srivastava [46]	2	Cattle	18 wk	Digestibility
Eadie and Gill [47]	2	Sheep	22, 55 wk	VFA
Eugène et al. [48]	4	Sheep	10, 14, 18, 22 wk	Digestibility
Frumholtz [38]	3	Sheep	5, 26, 52 wk	VFA
Hegarty et al. [12]	4	Sheep	12, 22, 24, 33 wk	CH₄, VFA
Kasuya et al. [49]	1	Cattle	21 wk	Digestibility
Kreuzer et al. [50]	3	Sheep	9, 10, 11 wk	CH₄
Morgavi et al. [13]	2	Sheep	6 wk, 2 yr	CH₄, VFA
Nagaraja et al. [51]	2	Sheep	14 wk	VFA
Nguyen et al. [33]	2	Sheep	9 wk	CH₄, VFA, digestibility
Ozutsumi et al. [35]	1	Cattle	14 wk	VFA
Santra and Karim [52]	2	Sheep	12 wk	Digestibility
Santra and Karim [53]	3	Sheep	14 wk	Digestibility
Santra et al. [54]	2	Sheep	8 wk	Digestibility
Schönhusen et al. [20]	4	Cattle	4, 5, 6, 7 wk	CH₄, VFA, digestibility
Sultana et al. [55]	1	Cattle	14 wk	VFA
Williams and Dinusson [56]	2	Cattle	30, 56 wk	VFA
Yáñez-Ruiz et al. [57]	1	Sheep	18 wk	VFA
Zhou et al. [58]	2	Sheep	5 wk	CH₄, VFA