Agronomic characteristics of sorghum genotypes and nutritional values of silage

The objective was to assess agronomic characteristics of sorghum genotypes and nutritional values of produced silage. A total of 15 sorghum genotypes were used. Planting was carried out through a randomized-block design with three replications per genotype, totaling forty-five (45) plots. Agronomic and nutritional characteristics, besides the quality of the silage, were assessed. There were differences between genotypes for all characteristics analyzed, with the exception of levels of acid detergent unavailable nitrogen (ADUN), acid detergent unavailable protein (ADUP) and water activity (aw). The assessment of the parameters, except for genotypes 1016013, 1016025, 1016037, 1016039, Volumax and BRS 610, which presented protein level below 7%, showed that the other genotypes can be used for silage production, since they have a good profile of fermentation and in vitro dry matter digestibility; however, genotype SF15 is the most favorable one for silage production due to its little participation in the neutral detergent fiber fraction.

Keywords:
digestibility; production; quality

Authorship

Renê Ferreira Costa ^**Author for correspondence. E-mail: renecostavet@gmail.com

Universidade Estadual de Montes Claros, Av. Reinaldo Viana, 2630, Cx. Postal 91, 39440-000, Janaúba, Minas Gerais, Brazil. Universidade Estadual de Montes ClarosBrazilJanaúba, Minas Gerais, BrazilUniversidade Estadual de Montes Claros, Av. Reinaldo Viana, 2630, Cx. Postal 91, 39440-000, Janaúba, Minas Gerais, Brazil.

Daniel Ananias de Assis Pires

Marielly Maria Almeida Moura

Eleuza Clarete Junqueira de Sales

José Avelino Santos Rodrigues

Empresa Brasileira de Pesquisa Agropecuária, Embrapa Milho e Sorgo, Sete Lagoas, Minas Gerais, Brazil. Empresa Brasileira de Pesquisa AgropecuáriaBrazilSete Lagoas, Minas Gerais, BrazilEmpresa Brasileira de Pesquisa Agropecuária, Embrapa Milho e Sorgo, Sete Lagoas, Minas Gerais, Brazil.

João Paulo Sampaio Rigueira

*Author for correspondence. E-mail: renecostavet@gmail.com

SCIMAGO INSTITUTIONS RANKINGS

Tables

Tables (5)

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Table 1
Average number of plants per hectare (No. Pl ha^-1), mean values of plant height (PLHT) in meters, green matter weight (GMW) in tons per hectare, and dry matter weight (DMW) of fifteen sorghum genotypes grown for silage production.

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Table 2
Mean values for pH, ammoniacal nitrogen in relation to total nitrogen (NH3-N /TN) and water activity (Aw) of the silage of fifteen sorghum genotypes grown for silage production.

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Table 3
Mean levels of dry matter (DM), crude protein (CP) and ether extract (EE) of fifteen sorghum genotypes grown for silage production (data expressed in dry matter).

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Table 4
Mean levels of neutral detergent fiber (NDF), acid detergent fiber (ADF) and in vitro dry matter digestibility (IVDMD) of the silage of fifteen sorghum genotypes grown for silage production.

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Table 5
Level of neutral detergent unavailable nitrogen (NDUN), acid detergent unavailable nitrogen (ADUN), neutral detergent insoluble protein (NDIP) and acid detergent insoluble protein (ADIP) of the silage of fifteen sorghum genotypes grown for silage production.

Table 1 Average number of plants per hectare (No. Pl ha^-1), mean values of plant height (PLHT) in meters, green matter weight (GMW) in tons per hectare, and dry matter weight (DMW) of fifteen sorghum genotypes grown for silage production.

Genotype	N° Pl ha^-1	PLHT (m)	GMW (ton ha^-1)	DMW (ton ha^-1)
1016009	135.67 B	2.38 B	32.80 C	11.97 A
1016011	159.33 A	2.26 B	37.13 C	12.66 A
1016013	163.33 A	2.53 B	37.47 C	12.94 A
1016017	142.00 B	2.07 C	30.60 C	10.94 B
1016025	150.33 B	2.32 B	30.80 C	9.36 B
1016029	129.00 B	2.05 C	30.00 C	11.15 B
1016031	161.00 A	2.15 C	29.00 C	12.29 A
1016033	163.33 A	2.10 C	26.40 C	10.02 B
1016035	152.33 A	2.03 C	26.60 C	9.81 B
1016037	138.00 B	2.50 B	35.87 C	11.92 A
1016039	161.33 A	2.40 B	31.40 C	9.46 B
BRS 655	147.00 B	2.15 C	33.53 C	11.13 B
Volumax	146.00 B	2.32 B	48.00 A	12.73 A
BRS 610	161.00 A	2.26 B	41.87 B	10.87 B
SF 15	170.67 A	3.30 A	52.07 A	15.41 A
(CV)	8.72	5.02	34.90	11.51

Means followed by different letters in the column differ by Scott-Knott test at 5% probability.
Fonte: Search result

Table 2 Mean values for pH, ammoniacal nitrogen in relation to total nitrogen (NH3-N /TN) and water activity (Aw) of the silage of fifteen sorghum genotypes grown for silage production.

Genotype	pH	N-NH3/TN	AW
1016009	4.00 B	2.28 C	0.97
1016011	4.31 A	1.79 C	0.96
1016013	3.63 B	2.38 C	0.97
1016017	3.85 B	1.27 C	0.97
1016025	3.95 B	5.90 A	0.97
1016029	3.78 B	4.05 B	0.97
1016031	3.89 B	5.00 A	0.97
1016033	3.82 B	2.31 C	0.96
1016035	3.88 B	3.69 B	0.96
1016037	3.76 B	1.85 C	0.97
1016039	3.74 B	1.47 C	0.97
BRS 655	3.91 B	2.31 C	0.97
Volumax	3.67 B	1.82 C	0.98
BRS 610	3.63 B	1.53 C	0.98
SF 15	3.76 B	2.28 C	0.96
(CV)	3.61	29.59	0.65

Means followed by different letters in the column differ by Scott-Knott test at 5% probability.
Fonte: Search result

Table 3 Mean levels of dry matter (DM), crude protein (CP) and ether extract (EE) of fifteen sorghum genotypes grown for silage production (data expressed in dry matter).

Genotype	DM (%)	CP (%)¹	EE (%)¹
1016009	36.53 B	9.04 A	2.44 B
1016011	34.14 C	8.62 A	4.17 A
1016013	34.51 C	5.88 B	1.64 B
1016017	35.74 B	8.06 A	4.01 A
1016025	30.28 C	6.95 B	2.78 B
1016029	37.13 B	9.00 A	2.97 A
1016031	42.33 A	9.03 A	3.46 A
1016033	37.94 B	9.07 A	3.12 A
1016035	36.82 B	8.69 A	3.69 A
1016037	33.24 C	6.12 B	2.19 B
1016039	30.14 D	4.58 C	2.25 B
BRS 655	33.24 C	8.84 A	2.45 B
Volumax	26.37 E	5.36 C	3.66 A
BRS 610	25.89 E	6.03 B	1.75 B
SF 15	29.68 D	8.03 A	1.80 B
(CV)	33.60	8.17	17.06

Means followed by different letters in the column differ by Scott-Knott test at 5% probability.
Fonte: Search result

Table 4 Mean levels of neutral detergent fiber (NDF), acid detergent fiber (ADF) and in vitro dry matter digestibility (IVDMD) of the silage of fifteen sorghum genotypes grown for silage production.

Genotype	NDF (%)¹	ADF (%)¹	IVDMD
1016009	69.32 A	40.98 B	46.16 A
1016011	67.27 A	52.28 A	36.57 B
1016013	69.97 A	52.42 A	33.82 B
1016017	65.28 A	52.95 A	42.98 A
1016025	62.99 A	54.46 A	39.98 B
1016029	72.12 A	54.69 A	39.53 B
1016031	68.14 A	44.61 B	43.58 A
1016033	64.33 A	38.92 B	50.24 A
1016035	49.40 B	53.24 A	46.63 A
1016037	69.13 A	47.21 B	52.39 A
1016039	57.43 B	56.33 A	43.95 A
BRS 655	66.34 A	44.85 B	40.46 B
Volumax	61.05 A	51.50 A	37.28 B
BRS 610	55.85 B	43.70 B	40.50 B
SF 15	44.64 B	53.03 A	37.80 B
(CV)	11.33	13.90	12.9

Means followed by different letters in the column differ by Scott-Knott test at 5% probability. ¹Data expressed in dry matter.
Fonte: Search result

Table 5 Level of neutral detergent unavailable nitrogen (NDUN), acid detergent unavailable nitrogen (ADUN), neutral detergent insoluble protein (NDIP) and acid detergent insoluble protein (ADIP) of the silage of fifteen sorghum genotypes grown for silage production.

Genotype	NDUN (%)¹	ADUN (%)¹	NDIP (%)¹	ADIP (%)¹
1016009	0.97 A	0.74 A	6.04 A	4.63 A
1016011	0.93 A	0.71 A	5.82 A	4.46 A
1016013	0.87 A	0.85 A	5.43 A	5.29 A
1016017	1.02 A	0.99 A	6.39 A	6.24 A
1016025	0.68 B	0.82 A	4.27 B	5.13 A
1016029	0.96 A	0.92 A	6.04 A	5.78 A
1016031	1.09 A	0.94 A	6.79 A	5.91 A
1016033	0.83 A	0.61 A	5.19 A	3.84 A
1016035	0.62 B	0.80 A	3.91 B	4.99 A
1016037	1.13 A	0.60 A	7.04 A	3.74 A
1016039	0.91 A	0.76 A	5.72 A	4.77 A
BRS 655	1.00 A	0.78 A	6.28 A	4.91 A
Volumax	0.83 A	0.83 A	5.43 A	5.16 A
BRS 610	0.59 B	0.47 A	3.68 B	2.92 A
SF 15	0.52 B	0.74 A	3.24 B	4.64 A
(CV)	25.80	19.21	5.40	4.83

Means followed by different letters in the column differ by Scott-Knott test at 5% probability. ¹Data expressed in dry matter.
Fonte: Search result

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Agronomic characteristics of sorghum genotypes and nutritional values of silage

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[1] *Author for correspondence. E-mail: renecostavet@gmail.com