. 2015 Feb;28(2):188–199. doi: 10.5713/ajas.14.0325

Table 6.

Volumes (mL/g DM) of methane production from the studied browse plants (n = 8)

Scientific name	Time of incubation

	2		12		24		48

	PEG(−)	PEG(+)	PEG(−)	PEG(+)	PEG(−)	PEG(+)	PEG(−)	PEG(+)
Acacia nilotica	0.76^h	1.70^f	3.43^m	8.46^j	4.55^k	17.83^e	5.10^ij	19.46^f
Acacia sieberriana woodii	1.15^d	1.50^g	9.93^e	11.15^e	15.33^c	17.27^f	16.41^f	21.66^e
Combretum microphyllum	0.078ⁿ	0.95^k	2.08^p	4.31^r	2.13^m	4.64^p	2.93^m	7.53^k
Combretum molle	0.091^m	1.85^l	2.44^o	5.96ⁿ	2.52^o	5.46^o	4.21^k	10.69ⁱ
Euphorbia tirucalli	1.01^e	2.03^c	6.94^f	10.20^h	11.39^d	16.94^g	21.41^c	26.21^c
Ficus religiosa	0.28^k	1.04^j	4.23^k	7.71^k	8.91^h	14.11ⁱ	13.2^g	18.18^g
Ficus thronniggi	1.51^c	1.90^d	11.94^d	13.47^d	18.45^b	20.28^d	26.11^b	28.25^b
Kirkia acuminata	0.15^l	0.94^k	0.77^r	3.91^q	1.65^no	4.61^p	3.56^l	8.07^kj
Kirkia willmsii	0.30^k	0.89^l	2.75^o	5.10^p	3.23^l	5.93ⁿ	5.20ⁱ	9.25^j
Lespendeza cuneata	0.45ⁱ	1.77^e	5.88^h	10.44^fg	10.72^e	17.16^fg	13.42^g	19.56^f
Leucaena leucocephala	2.08^b	2.36^b	6.30^g	10.3^g	7.99ⁱ	13.23^j	8.86^h	21.69^f
Melia azedarach	3.12^a	3.54^a	15.10^a	16.84^a	18.37^b	20.82^c	21.17^c	24.39^d
Morus alba	0.40^j	0.95^k	13.61^c	14.98^b	20.67^a	22.26^a	29.1^a	30.35^a
Olea africanum	1.11^d	1.40^h	4.99ⁱ	6.60^l	9.89^f	12.41^k	18.15^d	21.83^e
Olea europaea	0.95^f	1.26ⁱ	4.47^j	6.56^l	9.51^g	12.31^k	17.51^e	21.74^e
Peltrophorum africanum	0.080ⁿ	0.84^l	1.62^q	6.03^m	1.75ⁿ	9.13^l	3.78^l	16.64^h
Quercus rubica	0.84^g	1.42^h	3.63^l	5.79^o	5.17^j	7.74^m	4.79^j	9.10^j
Rhus lancea	0.058^o	0.12^l	0.04^s	8.62i	0.10^p	14.45^h	2.21^m	22.58^e
Ziziphus mucronta	1.12^d	0.88^l	12.98^b	13.85^c	20.64^a	21.24^b	28.74^a	30.36^a
SEM	0.015	0.0087	0.0074	0.0194	0.056	0.093	0.135	0.397
p value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

DM, dry matter; PEG, poly-ethylene glycol; PEG(−), denotes presence of tannin; PEG(+), denotes absence of tannin; SEM, standard error of the mean.

Means with different superscript (letters) across the column for each parameter are significantly (p<0.05) different.