TABLE 4.

The pH and fermentation products (%) and ammonia-N/total N of sweet sorghum silage at flowering and maturing stages.

Stage	Cultivar	Bloom	pH	LA	AA	PA	BA	AN/TN
Flowering	Yajin	−	3.98 ± 0.02a	4.34 ± 001a	1.28 ± 0.01a	0.16 ± 0.01a	0.19 ± 0.00a	0.88 ± 0.16b
		+	3.97 ± 0.02a	3.55 ± 0.16b	1.25 ± 0.03a	0.13 ± 0.00a	0.15 ± 0.00b	1.40 ± 0.029a
	Jintian	−	3.79 ± 0.04a	3.27 ± 0.20b	1.32 ± 0.03a	0.10 ± 0.01a	0.11 ± 0.01b	1.19 ± 0.09a
		+	3.75 ± 0.02a	4.66 ± 0.23a	1.39 ± 0.04a	0.14 ± 0.01a	0.16 ± 0.01a	0.98 ± 0.09a
		Analysis of variance
	Cultivar		63.6***	0.01	9.34*	26.3***	22.2**	0.30
	Bloom		0.95	2.86	0.37	0.82	0.89	1.89
	Cultivar × Bloom		0.71	40.1***	2.25	32.8***	37.6***	10.5*
Maturing	Yajin	−	4.16 ± 0.03a	3.60 ± 0.11a	0.61 ± 0.02b	0.13 ± 0.00a	0.31 ± 0.12b	5.38 ± 0.12a
		+	4.06 ± 0.07a	2.57 ± 0.21b	0.97 ± 0.08a	0.14 ± 0.01a	0.51 ± 0.05a	3.33 ± 0.27b
	Jintian	−	3.83 ± 0.02a	7.52 ± 0.74a	0.71 ± 0.05a	0.11 ± 0.00a	0.08 ± 0.01a	8.08 ± 0.33a
		+	3.87 ± 0.03a	4.81 ± 0.13b	0.71 ± 0.01a	0.11 ± 0.00a	0.08 ± 0,00a	8.24 ± 0.40a
		Analysis of variance
	Cultivar		32.7***	61.2***	2.82	8.00*	139.5***	160.7***
	Bloom		0.44	22.5**	16.1**	0.5	12.0**	10.0*
	Cultivar × Bloom		2.37	4.6	15.6**	<0.001	13.7**	13.6**

AA, acetic acid; AN, ammonia nitrogen; BA, butyric acid; LA, lactic acid; PA, propionic acid; TN, total nitrogen. −, without bloom; +, with bloom. Values followed by different lowercase letters in the same column within each cultivar are significantly different at P < 0⋅05 according to the least significant difference test. *P < 0.05, **P < 0.01, ***P < 0.001.