Chemical composition and in situ dry matter and fiber disappearance of sorghum × Sudangrass hybrids1

Beck, Paul; Hutchison, S.; Gunter, S. A.; Losi, Tiago Creste; Stewart, C. B.; Capps, P K; Phillips, James M.

doi:10.2527/jas.2006-292

Cited by 47 publications

(46 citation statements)

References 11 publications

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“…Beck et al (2007) observed CP content of 12.6; 9.7; 6.9; 5.0 and 4.3% when a sorghum-Sudan grass hybrid was subjected to cutting at 34, 41, 48, 55 and 63 days after planting, respectively. Nineteen hybrids analyzed had ideal values of CP content to meet the requirements of nitrogen by rumen flora and for a good rumen functioning (7% minimum).…”

Section: Methodsmentioning

confidence: 90%

Nutritional characteristics of sorghum hybrids hay (sorghum sudanense x sorghum bicolor)

Lima

Pires

Moura

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. This study evaluated the nutritional characteristics of hay of nineteen hybrids between sorghum and Sudan grass. The experimental design was a randomized block with nineteen treatments and three replications. The chemical characteristics of the respective hays were analyzed 52 days after sowing and 45 and 49 regrowth days. Data were analyzed by analysis of variance, and when the F test was significant, the treatment means were compared by the Scott and Knott test at 5%. Genotypes 1013026 and 1014020 showed similar dry matter content. As for ether extract content, the highest values ranged from 2.20 to 2.66%. Higher values of minerals were observed in hybrids 1013026 and 1011005. In relation to crude protein, higher content values were reported for hybrids 1013021 and 1013020 (14.59 and 15.47% CP). When evaluating the neutral detergent fiber content, lower values varied between 56.05 and 57.07% for hybrids 1013016 and 1011009. Considering the content of acid detergent fiber, values ranged from 32.70 to 35.78%. Values of dry matter digestibility were higher than 50%. All hybrids provide quality hay, however the hybrid 1014019 showed the best nutritional value.

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Section: Methodsmentioning

confidence: 90%

Nutritional characteristics of sorghum hybrids hay (sorghum sudanense x sorghum bicolor)

Lima

Pires

Moura

et al. 2017

Acta Sci. Anim. Sci.

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Section: Idade Ao Corte (Dias)unclassified

“…Beck et al (2007) A mutação bmr-6 provocou reduções de 9,5; 12,4 e 11,1% nos teores de FDA da planta inteira nas idades de 52, 61 e 67 dias, respectivamente, ao passo que na idade de 74 dias não foram observadas diferenças entre os híbridos que compõem o par isogênico normal e mutante bmr. Beck et al (2007) (1988), ao avaliarem as silagens e os fenos produzidos com dois híbridos de sorgo com capim-sudão convencionais e seus pares isogênicos portadores de nervura marrom, não observaram redução nos teores de FDA em função da mutação bmr. As variações observadas nos efeitos das mutações bmr entre experimentos corroboram com a colocação de Cherney et al (1991) de que a expressão das mutações bmr são frequentemente modificadas pelo ambiente e pela linhagem de células em que ela é expressada, e justifica a importância de se testar os efeitos desses genes em ambientes e linhagens diversos.…”

Section: Idade Ao Corte (Dias)unclassified

“…Nesse experimento, a mutação bmr-6 provocou aumentos de 15,2; 5,7; 9,9 e 5,5% nas DIVMS da planta inteira nas idades de 52, 61, 67 e 74 dias, respectivamente. Beck et al (2007) De acordo com Oba e Allen (1999a), a digestibilidade da FDN é um parâmetro muito importante na avaliação da qualidade das forragens. A fração fibrosa dos alimentos é fermentada lentamente e é retida no rúmen por mais tempo que as frações não fibrosas, causando o efeito de enchimento ruminal.…”

Section: Idade Ao Corte (Dias)unclassified

“…Plantas mutantes bmr (do inglês brown midrib, ou nervura central marrom) são caracterizadas por apresentar redução no conteúdo e alterações na composição da lignina, levando a uma maior digestibilidade da parede celular e, consequentemente, podem proporcionar maiores consumos e desempenho animal (OBA; ALLEN, 2000;BECK et al, 2007;LEDGERWOOD et al, 2009;ASTIGARRAGA et al, 2014). O programa de melhoramento genético de plantas forrageiras desenvolvido pela Embrapa Milho e Sorgo tem selecionado novos híbridos de sorgo com capimsudão, incluindo genótipos portadores da mutação bmr, que devem ser avaliados para utilização na alimentação de ruminantes.…”

Section: Introductionunclassified

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Valor nutricional de híbridos de sorgo para corte e pastejo (Sorghum bicolor x Sorghum sudanense) em diferentes fases fenológicas

et al. 2015

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The aim of this work was to evaluate the nutritional value of four sorghum-sudangrass hybrids harvested at four different stages of maturity. The hybrids evaluated were BR800, BRS810 (bmr), BRS802 and 156x2784. Hybrids were harvested at 52, 61, 67 and 74 days after seeding. BRS802 and BRS810 (bmr) are sorghum-sudangrass hybrids isogenic pairs that are distinguished only by the presence of bmr-6 mutation on BRS810. Samples were analyzed for dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL) content and in vitro DM and NDF digestibility (IVDMD and IVNDFD). Interaction between hybrid and stage of maturity was observed for NDF, ADF, IVDMD and IVNDFD. A linear increase in DM content was observed with increasing stage of maturity. A quadratic effect was observed for CP content with increasing stage of maturity, and the maximum CP value was estimated to be with 55.8 days. The hybrid BR800 had the highest CP content (12.5%) and the hybrids BRS 802 and 156x2784 the lowest CP content (9.7 and 10.3%, respectively) for all stages of maturity evaluated. A quadratic effect in NDF content was observed with increasing stage of maturity for the hybrids BR800, BRS810 (bmr) and BRS802 with the maximum values estimated to be with 62.0, 61.7 and 60.4 days after seeding respectively. With 52 and 67 days after seeding the hybrid BRS810 (bmr) had the lowest NDF content (64.2 and 66.4%, respectively). The isogenic pair, hybrids BRS802 and BRS810 (bmr), had a linear decrease in ADF content with increasing stage of maturity, and with 52, 61 and 67 days after seeding the bmr hybrid had lower ADF content compared to its counter pair (BRS802). No linear or quadratic effect with increasing stage of maturity was observed for ADL content. The hybrids BRS802 and 156x2784 had the highest ADL content (4.42 and 4.16%, respectively) regardless of the stage of maturity. BRS810 (bmr) had the lowest ADL content (2.49%) and intermediate value was observed for BR800 (3.69%). The hybrid BRS810 (bmr) had higher IVDMD and IVNDFD than its isogenic pair (BRS802) for all stages of maturity evaluated. The bmr-6 mutation increased the nutritional value of the sorghum-sudangrass hybrid through reduction in the NDF, ADF and ADL content and increases in CP, IVDMD and IVNDFD. Comparing the normal hybrids (non bmr), the hybrid BR800 stood out because of its lower ADF and ADL content and higher IVNDFD.

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Corn and sudangrass intercropped with Kura clover for Midwestern pastures

2020

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Warm‐season annual grasses have potential to increase the productivity of Midwestern grazing systems in mid‐summer when cool‐season species production slumps. This research investigated forage nutritive value and steer performance for two warm‐season annual grasses, corn (Zea mays L.) and sudangrass [Sorghum bicolor (L.) Moench.], intercropped with Kura clover (Trifolium abiguum M. Bieb.). Mixtures were rotationally grazed with Holstein (Bos taurus; 242 kg, n = 180 yr−1) steers from 2014 to 2016. Corn–Kura clover (C‐KC) and sudangrass–Kura clover (SG‐KC) were grazed for 24 d from mid‐July to mid‐August and SG‐KC regrowth was grazed an additional 24 d from mid‐Aug to mid‐September. Forage harvested was greater (P < .05) for SG‐KC (3442 ± 223 kg ha−1) than C‐KC (2426 ± 193 kg ha−1). A mixture × year effect (P = .03) was detected for in vitro true digestibility (IVTD) and all forage nutritive variables had year effects (P < .01). Crude protein did not differ between treatments (P = .30), neutral detergent fiber (NDF) was lower (P < .01), and IVTD and NDF digestibility were higher (P < .05) in C‐KC. A mixture × year effect (P < .05) existed because heat stress suppressed average daily gain in the C‐KC grazing session in 2016. Steer gain per hectare was greater for SG‐KC (P < .01), with 318 kg ha−1 and 195 kg ha−1 for SG‐KC and C‐KC, respectively. Despite greater forage nutritive value in C‐KC, SG‐KC resulted in greater animal gain per hectare due to regrowth potential after first grazing.

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Chemical composition and in situ dry matter and fiber disappearance of sorghum × Sudangrass hybrids1

Cited by 47 publications

References 11 publications

<b>Nutritional characteristics of sorghum hybrids hay (<i>sorghum sudanense</i> x <i>sorghum bicolor</i>)

<b>Nutritional characteristics of sorghum hybrids hay (<i>sorghum sudanense</i> x <i>sorghum bicolor</i>)

Valor nutricional de híbridos de sorgo para corte e pastejo (Sorghum bicolor x Sorghum sudanense) em diferentes fases fenológicas

Corn and sudangrass intercropped with Kura clover for Midwestern pastures

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