. 2018 Nov 27;32(6):783–791. doi: 10.5713/ajas.18.0543

Table 2.

Effect of additives and ensiling days on organic acid and ethanol composition of rice straw silages

Items	Treatment¹⁾	Ensiling days				Means	SEM	Significance²⁾

		6	15	30	60			D	T	D×T
Lactic acid (g/kg DM)	C	16.22^c ^B	26.26^c ^B	37.80^d ^A	22.77^d ^B	25.76^d	3.46	^*	^*	^*
	L	51.80^ab ^B	64.06^ab ^AB	81.12^b ^A	59.97^b ^B	64.24^b
	M	42.46^b ^B	50.59^b ^AB	60.39^c ^A	40.39^c ^B	48.46^c
	ML	55.31^a ^D	73.65^a ^C	103.63^a ^A	88.68^a ^B	80.32^a
Acetic acid (g/kg DM)	C	8.07^a ^D	13.03^a ^C	22.38^a ^B	27.46^a ^A	17.73^a	0.91	^*	^*	^*
	L	5.88^ab ^C	7.94^b ^C	12.25^b ^B	15.38^c ^A	10.36^c
	M	7.55^ab ^C	9.94^b ^C	14.47^b ^B	20.57^b ^A	13.13^b
	ML	5.44^b ^D	7.52^b ^C	12.49^b ^B	17.34^c ^A	10.70^c
Butyric acid (g/kg DM)	C	ND	0.36	1.68	2.51	1.14^a	0.11	^*	^*	^*
	L	ND	ND	ND	ND	0^b
	M	ND	ND	ND	0.62	0.15^b
	ML	ND	ND	ND	ND	0^b
Ethanol (g/kg DM)	C	12.28^a ^B	10.76^a ^B	21.41^a ^A	28.60^a ^A	18.26^a	0.87	^*	^*	^*
	L	7.15^bc ^B	8.72^b ^B	11.76^b ^A	13.44^bc ^A	10.27^c
	M	8.32^b ^D	10.63^a ^C	13.77^b ^B	16.32^b ^A	12.26^b
	ML	5.49^c ^C	6.68^c ^BC	7.45^c ^AB	8.21^c ^A	6.96^d
Lactic acid/acetic acid	C	2.00^c ^A	2.04^c ^A	1.69^d ^A	0.83^d ^B	1.64^d	0.45	^*	^*	^*
	L	8.81^a ^A	8.35^ab ^A	6.68^b ^AB	3.90^b ^B	6.93^b
	M	5.89^b ^A	5.10^bc ^A	4.20^c ^AB	1.96^c ^B	4.29^c
	ML	10.20^a ^A	9.83^a ^AB	8.30^a ^B	5.12^a ^C	8.36^a

DM, dry matter; SEM, standard error of means; ND, no detected.

¹⁾

C, no additive control; L, Lactobacillus plantarum; M, molasses; ML, molasses+Lactobacillus plantarum.

²⁾

D, ensiling days; T, treatments; D×T, interaction between treatments and ensiling days.

p<0.05.

^a–d

Values with different small letters show significant differences among ensiling days in the same treatment (p<0.05).

^A–D

Values with different capital letters show significant differences among treatments in the same ensiling days (p<0.05).