Evaluation of silages of hybrids of napier grass and sorghum in the low country wet zone of Sri Lanka

Seresinhe, Thakshala Rupanjanie; Weerasinghe, Piyatilak Bandara; Sanjeewa, Janith; Harindrika, Hansini; Manawadu, Ariyathilaka; Mahipla, Kumara; Iben, Christine

doi:10.2478/boku-2020-0002

Figures & Tables

Fresh matter yields of silagesTabelle 1_ Frischmasseerträge der Silagen

Harvest	Harvesting interval (weeks)	Fresh matter yield (t/ha/cut)			p-Value
		HN var. CO-3	HN var. CO-4	Sorghum
1	4	12.70 ± 0.26d	10.44 ± 0.23d	5.74 ± 0.22e	V	0.000
	6	29.04 ± 0.52b	22.70 ± 0.39c	28.41 ± 1.10b	H	0.000
	8	40.93 ± 0.49a	37.56 ± 0.84a	38.33 ± 2.17a	V × H	0.000
2	4	9.81 ± 0.92d	9.63 ± 1.95d	5.94 ± 0.34e	V	0.000
	6	30.85 ± 0.87b	23.15 ± 0.18c	30.17 ± 1.12b	H	0.000
	8	42.93 ± 0.35a	38.48 ± 0.91a	39.37 ± 1.53a	V × H	0.000

Effect of silage type and cutting frequency on nutrient concentrationTabelle 4_ Einfluss von Silagetyp und Schnitthäufigkeit auf die Nährstoffkonzentration

Parameters	CI (weeks)	Silage type						p-Value
		HN var. CO-3	HN var. CO-4	Sorghum	HN var. CO-3 (50%) + Sorghum (50%)	HN var. CO-4 (50%) + Sorghum (50%)
Ash (%)	4	12.44 ± 0.05b	9.26 ± 0.06d	12.78 ± 0.05a	12.61 ± 0.04ab	11.02 ± 0.49c	S	0.000
	6	8.32 ± 0.04fg	7.64 ± 0.05h	8.68 ± 0.05e	8.50 ± 0.03ef	8.16 ± 0.05g	Ci	0.000
	8	7.61 ± 0.07h	7.13 ± 0.06i	6.81 ± 0.04j	7.21 ± 0.05i	6.97 ± 0.04ij	S × Ci	0.000
Crude Protein (%)	4	20.96 ± 0.12a	20.73 ± 0.2ab	20.52 ± 0.05b	20.74 ± 0.05ab	20.62 ± 0.08b	S	0.000
	6	14.41 ± 0.08e	14.66 ± 0.47e	18.88 ± 0.10c	16.65 ± 0.02d	16.77 ± 0.04d	Ci	0.000
	8	13.63 ± 0.05g	13.66 ± 0.27g	14.50 ± 0.07e	14.06 ± 0.06f	14.08 ± 0.06f	S × Ci	0.000
Crude Fiber (%)	4	27.16 ± 0.17 a	27.38 ± 0.15 de	21.88 ± 0.13g	24.52 ± 0.29f	24.63 ± 0.34f	S	0.000
	6	29.02 ± 0.39 c	29.04 ± 0.16 c	26.57 ± 0.13 e	27.79 ± 0.58d	27.80 ± 0.37d	Ci	0.000
	8	30.02 ± 0.18b	31.48 ± 0.10 a	28.71 ± 0.15c	29.37 ± 0.45bc	30.10 ± 0.36b	S × Ci	0.000

Effect of silage type and cutting frequency on quality characteristicsTabelle 3_ Einfluss von Silageart und Schnitthäufigkeit auf die Qualitätsmerkmale

Parameters	CI (weeks)	Silage type					p-Value
		HN var. CO-3	HN var. CO-4	Sorghum	HN var. CO-3 (50%) + Sorghum (50%)	HN var. CO-4 (50%) + Sorghum (50%)
DM (%)	4	14.14 ± 0.12b	13.28 ± 0.65b	14.88 ± 0.37b	15.44 ± 0.78b	14.63 ± 0.77b	S	0.236
	6	15.58 ± 0.25b	16.73 ± 1.05ab	17.88 ± 1.66ab	14.24 ± 1.57b	16.31 ± 2.81ab	Ci	0.046
	8	14.95 ± 0.28b	15.83 ± 1.16ab	18.77 ± 0.42a	16.49 ± 1.75ab	15.63 ± 0.30b	S × Ci	0.650
pH	4	5.28 ± 0.16ab	5.45 ± 0.25a	4.82 ± 0.26b	5.04 ± 0.07ab	5.00 ± 0.22ab	S	0.007
	6	5.52 ± 0.26a	5.47 ± 0.17a	4.92 ± 0.07bc	5.41 ± 0.19a	5.22 ± 0.21a	Ci	0.209
	8	5.16 ± 0.08a	5.35 ± 0.14a	4.54 ± 0.05c	5.28 ± 0.23a	5.15 ± 0.26ab	S × Ci	0.944
NH₃-N (%)	4	0.16 ± 0.01a	0.16 ± 0.05a	0.05 ± 0.01bc	0.05 ± 0.01b	0.05 ± 0.00b	S	0.048
	6	0.10 ± 0.0a	0.11 ± 0.04ab	0.04 ± 0.01b	0.14 ± 0.01a	0.12 ± 0.05ab	Ci	0.029
	8	0.05 ± 0.00b	0.06 ± 0.03ab	0.02 ± 0.01c	0.05 ± 0.04bc	0.06 ± 0.05bc	S × Ci	0.246
Lactic acid (%)	4	0.68 ± 0.48b	1.26 ± 0.77b	2.08 ± 0.77b	1.62 ± 0.56b	2.53 ± 0.97ab	S	0.031
	6	1.03 ± 0.45b	1.25 ± 0.14b	4.14 ± 0.77a	2.65 ± 1.4ab	2.71 ± 0.06ab	Ci	0.260
	8	0.44 ± 0.04b	1.15 ± 0.76b	2.35 ± 1.05b	0.64 ± 0.59b	0.66 ± 0.59b	S × Ci	0.599
SCHO (%)	4	0.88 ± 0.15d	1.07 ± 0.18bcd	2.12 ± 0.88abc	1.86 ± 0.13b	1.84 ± 0.28b	S	0.016
	6	1.52 ± 0.19b	1.36 ± 0.15acdb	2.54 ± 0.12a	2.63 ± 0.57a	1.59 ± 0.41b	Ci	0.000
	8	0.88 ± 0.11c	0.46 ± 0.15d	0.49 ± 0.45cd	0.28 ± 0.80d	0.83 ± 0.11c	S × Ci	0.043
NH₃-N/TN	4	0.05 ± 0.00a	0.05 ± 0.01ab	0.01 ± 0.00c	0.01 ± 0.00c	0.01 ± 0.00c	S	0.069
	6	0.04 ± 0.01a	0.05 ± 0.02ab	0.01 ± 0.00c	0.05 ± 0.00a	0.04 ± 0.02b	Ci	0.082
	8	0.02 ± 0.00b	0.03 ± 0.01ab	0.01 ± 0.00c	0.02 ± 0.01abc	0.03 ± 0.02abc	S × Ci	0.751

Effect of silage types on physical characteristics of silageTabelle 2_ Einfluss der Silagetypen auf die physikalischen Eigenschaften der Silage

Parameters	Silage type
	HN var. CO-3	HN var. CO-4	Sorghum	HN var. CO-3 (50%) + Sorghum (50%)	HN var. CO-4 (50%) + Sorghum (50%)
Physical appearance & texture	Wet and leafy	Wet and leafy	Leafy, soft texture	Soft, medium wet	Soft, medium wet
Color	Olive green	Olive green	Light green to green	Pale green to light green	Pale green to light green
Aroma	Little fruity smell	Little fruity smell	Mild, high fruity smell	Medium fruity smell	Medium fruity smell
Molds	Absent	Absent	Absent	Absent	Absent

Evaluation of silages of hybrids of napier grass and sorghum in the low country wet zone of Sri Lanka

Figures & Tables

Fresh matter yields of silagesTabelle 1_ Frischmasseerträge der Silagen

Effect of silage type and cutting frequency on nutrient concentrationTabelle 4_ Einfluss von Silagetyp und Schnitthäufigkeit auf die Nährstoffkonzentration

Effect of silage type and cutting frequency on quality characteristicsTabelle 3_ Einfluss von Silageart und Schnitthäufigkeit auf die Qualitätsmerkmale

Effect of silage types on physical characteristics of silageTabelle 2_ Einfluss der Silagetypen auf die physikalischen Eigenschaften der Silage

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