Table 4.

Effects of gliricidia levels, opening times and the interaction between the factors for organic acids from cactus pear silages.

	p-value*
	LA	AA	LA:AA	PA	BA
Levels (L)	<0.001	<0.001	<0.001	<0.001	<0.001
Opening (O)	<0.001	<0.001	<0.001	<0.001	0.055
L × O	<0.001	0.002	<0.001	<0.001	0.111

LA = lactic acid; AA = acetic acid; LA:AA = ratio of lactic and acetic acids; PA = propionic acid; BA = butyric acid.

*Significant at <0.05.