Table 2. Changes in Chemical Composition and Nutritive Value of Silages during the Aerobic Exposure (Pooled Samples)^a.

		aerobic exposure (days)								P-value
parameter	variety	0	1	2	3	5	7	10	14	variety	time
dry matter (%)	W22	21.10	21.60	21.43	21.80	21.18	19.51	19.26	17.55	0.0024	0.1111
	bx1	22.68	22.70	23.11	22.43	22.60	23.61	23.28	20.40
crude protein	W22	104.9	102.9	103.0	102.1	97.1	106.8	127.2	138.7	0.5199	<0.0001
	bx1	103.9	107.0	105.4	102.5	99.9	99.8	120.1	136.0
crude fiber	W22	220.9	215.3	215.8	211.1	217.9	243.3	262.1	279.4	0.8028	0.0033
	bx1	217.0	218.5	219.9	219.9	235.9	226.3	261.3	257.3
crude fat	W22	33.3	33.0	32.9	34.1	34.6	32.7	33.3	29.4	0.7551	0.5093
	bx1	32.3	33.2	32.3	31.2	34.4	35.0	33.8	33.0
starch	W22	215.7	230.4	234.0	241.5	257.0	193.4	142.5	95.7	0.4684	0.0030
	bx1	221.3	208.9	215.2	218.8	201.0	224.4	136.2	122.3
WSC	W22	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0	n.a.	n.a.
	bx1	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0	<5.0
NDForg	W22	421.5	413.1	412.6	409.2	422.2	458.4	492.8	523.1	0.7405	0.0045
	bx1	419.5	422.9	424.3	429.0	460.1	444.1	490.2	485.2
ADForg	W22	237.0	231.6	232.6	224.2	228.2	263.7	309.4	327.6	0.5134	0.0009
	bx1	229.9	232.5	233.7	234.7	252.1	244.9	295.3	298.0
ESOM	W22	584.0	591.6	593.9	592.2	582.9	539.3	446.5	403.0	0.2271	0.0006
	bx1	592.3	580.5	585.5	585.3	568.1	576.7	495.6	459.0
ash	W22	34.7	33.5	36.7	36.9	41.4	46.4	53.1	51.9	0.0273	0.0005
	bx1	33.7	35.4	34.6	35.9	36.5	38.5	48.4	47.4
NEL (MJ/kg DM)	W22	6.28	6.33	6.34	6.37	6.32	6.01	5.57	5.24	0.4996	0.0025
	bx1	6.30	6.26	6.26	6.23	6.16	6.25	5.79	5.62

^aValues are expressed in g/kg DM unless stated otherwise.