. 2012 Apr;25(4):479–485. doi: 10.5713/ajas.2011.11435

Table 3.

Effect of adding WHDG on volatile fatty acid content of mixed silages of hulless-barley straw and tall fescue during ensiling

Items	Ensiling days	Control	10% WHDG	20% WHDG	30% WHDG
Acetic acid (g/kg DM)	7	15.74±1.37^bB	23.31±2.55^bA	1.45cB±18.57	17.07±1.63^bB
	14	22.29±3.05^aB	49.10±6.65^aA	24.43±1.03^bB	25.13±3.03^aB
	30	18.01±0.89^bC	39.80±4.59^aA	28.36±1.49^aB	31.82±4.89^aB
Propionic acid (g/kg DM)	7	7.26±0.60^aA	0.33±0.18^aB	0.42±0.02^bB	0.54±0.11^bB
	14	9.87±1.43^aA	0.38±0.21^aB	0.44±0.19^bB	0.20bB±0.59
	30	8.20±2.42^aA	0.66±0.19^aB	1.44±0.18^aB	1.13±0.09^aB
Butyric acid (g/kg DM)	7	5.84±0.50^aA	0.70±0.13^bB	0.53±0.04^aB	0.38±0.06^aB
	14	7.63±2.05^aA	0.46±0.10^bB	0.44±0.26^aB	0.61±0.16^aB
	30	6.41±1.98^aA	1.28±0.16^aB	0.45±0.11^aB	0.89±0.50^aB
Total VFAs (g/kg DM)	7	28.84±0.28^bA	25.23±2.28^bB	20.03±1.41^cC	17.99±1.75^cC
	14	39.78±3.84^aB	50.33±6.88^aA	25.31±1.34^bC	26.33±3.20^bC
	30	32.61±5.16^abB	41.95±4.41^aA	31.25±1.46^aB	34.31±4.19^aAB
Lactic acid/Acetic acid	7	1.43±0.16^bD	2.17±0.28^aC	3.36±0.12^aB	3.92±0.40^aA
	14	1.77±0.18^bB	1.14±0.18^bC	2.64±0.21^bA	2.66±0.52^bA
	30	3.13±0.25^aA	1.62±0.58^abC	2.48±0.32^bAB	2.04±0.33^bcBC

WHDG = Wet hulless-barley distillers’ grains. Average means±standard deviations.

Values with different lower case letters show significant differences among ensiling days in the same treatment.

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