Fracionamento dos carboidratos de silagens de milho safrinha colhidas em diferentes alturas de corte

Pedó, Luís Felipe Brancher; Nörnberg, José Laerte; Velho, João Pedro; Hentz, Fernanda; Henn, João Dionísio; Barcellos, Júlio Otávio Jardim; Haygert-Velho, Ione Maria Pereira; Marx, Fábio Ritter

doi:10.1590/s0103-84782008005000053

Cited by 10 publications

(8 citation statements)

References 10 publications

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“…Oliveira (2009) The NDF, FAD and HEM levels decreased linearly as the cutting height increased, by 1.9, 0.6 and 1.3%, respectively, for each 0.10 m increase in the height (Table 6). This was similar to the 0.8% reduction in NDF and 0.7% reduction in FAD with each 0.10 m increase in cutting height reported by Pedó et al (2009) when comparing 5 cutting heights, but contrasted with the 13.24% reduction of in the NDF content reportd by Restle et al (2002a) (2008) observed a reduction of 8 and 9% for NDF and FAD, respectively, from 0.13 to 0.48 m. Restle et al (2002b), in studies with sorghum, also found that increasing the cutting height from 0.14 to 0.45 m changed the quality of the fibrous fraction of the silage, providing a reduction of 18.51 and 10.41% in the NDF and FAD contents, respectively. Lignin is one of the main factors that limits cell wall degradability ( VAN SOEST, 1994).…”

Section: Resultssupporting

confidence: 86%

Nutrient balance in the soil and nutritive characteristics of maize silage cut at different heights

Hülse

Neumann

Ueno

et al. 2017

SCA

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Maize harvesting for silage promotes intense use of soil nutrients. The increase in forage harvesting time can ease nutrient use and benefit the nutritional quality of the silage. However, this practice may be economically unviable due to the reduction in the volume of harvested forage. The objective of our experiment was to evaluate several agronomic parameters, such as production, plant composition, nutritional value of silage and nutrient balance in the soil by harvesting the maize plant at different silage heights: 0.20; 0.40; 0.60; 0.80 and 1.00 m above the ground. The experimental design was completely randomized, with five treatments with five repetitions. Representative plants in each plot were cut and fragmented in a forage machine. This material was homogenized and ensiled in experimental polyvinyl chloride (PVC) silos. Each 0.10 m increase at harvest provided an increase of 0.65% in the dry matter content of the forage and reduced harvest to 339 kg ha -1 of dry matter. The presence of grains in the forage increased linearly 1.24% for every 0.10 m at the time of harvest. The levels of neutral detergent fiber, acid detergent fiber and silage lignin had a linear decrease of 4.5, 2.8 and 9.6%, respectively, per each 0.10 m lift crop height. Regarding the total digestible nutrients, dry matter intake and the relative forage, these values had a linear increase of 0.5, 7.2 and 8.2%, respectively. For each 0.10 m increase in cutting height, there was a decrease in soil nutrients, namely 3.6 kg ha -1 N, 1.3 kg ha -1 P 2 O 5 , 9.5 kg ha -1 K 2 O, 0.9 kg ha -1 CaO and 1.2 kg ha -1 MgO. Even with the harvest at 1.00 m above the ground, nutrient recycling nutrients by necromass is not sufficient to balance the potassium balance in the soil, causing a decline of 37.69 kg ha -1 K 2 O. The maize harvest to 0.47 m height represented the best relationship between silage quantity and quality, being the height that presents the greatest potential for economic return, and can fund management practices and soil fertilization to prevent degradation in foraging systems, mainly to overcome the negative balance of potassium in the system. ResumoA colheita de milho para ensilagem promove intensa exportação de nutrientes do solo. A elevação da altura de colheita da forragem pode amenizar a exportação de nutrientes e beneficiar a qualidade nutricional da silagem. No entanto, essa prática pode ser inviável economicamente devido à redução no volume de forragem colhida. Objetivou-se com este experimento avaliar os parâmetros agronômicos de produção, composição vegetal, valor nutricional da silagem e balanço de nutrientes no solo pela colheita da planta de milho em diferentes alturas: 0,20; 0,40; 0,60; 0,80 e 1,00 m do solo. O delineamento experimental foi inteiramente casualizado, composto por 5 tratamentos com 5 repetições. Plantas representativas de cada parcela foram colhidas nas respectivas alturas e fragmentadas em uma ensiladeira. Este material foi homogeneizado e ensilado em silos experimentais de policloreto de vini...

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Section: Resultssupporting

confidence: 86%

Nutrient balance in the soil and nutritive characteristics of maize silage cut at different heights

Hülse

Neumann

Ueno

et al. 2017

SCA

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“…ADF lower than 30% for corn silages has been recommended by Velho et al (2006a and b) and Pedó et al (2009), since it indicated the quantity of non-digestible fiber and contained a higher proportion of lignin. Quality of fiber in the stem was due to the characteristics of differentiated agronomic behavior as a result of genetic improvement to increase stem resistance to bedding and pathogenic agents.…”

Section: Resultsmentioning

confidence: 99%

Nutrition value of silage from corn hybrids in the State of Mato Grosso, Brazil - doi: 10.4025/actascianimsci.v34i2.11782

Domingues

Abreu

Cabral

et al. 2012

Acta Sci. Anim. Sci.

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ABSTRACT. Nutrition value of silage from corn hybrids produced in Mato Grosso, State was evaluated. A randomized block design was used with 23 treatments (hybrids) and three replications. The study used hybrids from different seed companies. Fodder was stored in PVC pipes at a density of 600 kg of green mass m -³. The silos were opened 90 days after ensiling, and the following variables were studied: pH, dry matter (DM), ammoniacal nitrogen (N-NH 3 ), crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrients (TDN) and minerals (Ca, P, K and Mg). Rates were estimated for dry matter intake (DMI), dry matter digestibility (DM), net energy for maintenance (NEm), gain (NEg) and lactation (EL). All the characteristics were determined by near-infrared spectroscopy (NIR). With regard to standard fermentation, silage of different hybrids had appropriate values for pH and N-NH 3 . The silage of hybrids DKB 370, DKB 330, DAS 2C520, DAS 2B710, DAS 2B587, BF 9534, AG 9010, AG 8088, AG 5020, BE 9701, AGN 30A06 e AGN 31A31 showed lower NDF and higher estimated DMI values.Keywords: bromatological composition, ensiling, intake, NDF, NIRS.Valor nutritivo da silagem de híbridos de milho no Estado do Mato Grosso, Brasil RESUMO. Objetivou-se avaliar a composição bromatológica da silagem de híbridos de milho em cultivo de segunda safra no Estado do Mato Grosso. Utilizou-se o delineamento experimental em blocos casualizados com 23 tratamentos (híbridos) e três repetições. A forragem foi acondicionada em tubos de PVC sob densidade de 600 kg de massa fresco m -³. A abertura dos silos ocorreu 90 dias após a ensilagem, sendo avaliados: valor de pH, teores de matéria seca (MS), nitrogênio amoniacal (N-NH 3 ), proteína bruta (PB), fibra em detergente ácido (FDA), fibra em detergente neutro (FDN), nutrientes digestíveis totais (NDT) e minerais (Ca, P, K e Mg).Também foram estimados os valores do consumo de matéria seca (CMS), digestibilidade "in vitro" da matéria seca (DIVMS), energias líquidas de mantença (ELm), ganho (ELg) e de lactação (ELl). Todas as características avaliadas foram determinadas por meio de espectrofotometria de infravermelho proximal (NIRS). Com relação ao padrão fermentativo, as silagens dos diferentes híbridos tiveram valores adequados de pH e NNH 3 . As silagens dos híbridos DKB 370, DKB 330, DAS 2C520, DAS 2B710, DAS 2B587, BF 9534, AG 9010, AG 8088, AG 5020, BE 9701, AGN 30A06 e AGN 31A31 apresentaram menor teor de FDN e maior valor estimado de CMS.Palavras-chave: composição bromatológica, ensilagem, consumo, FDN, NIRS.

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“…With these values, it is implied that the grass was responsible for the drop in production of organic matter when in the presence of corn, which presented the highest value. Pedó et al (2009) found values next to corn at different heights, with an average of 95.87% organic matter with heights of 20, 45, 70 and 95 cm. Velho et al (2007), assessing the OM of corn in different densities found that the higher the smaller the density OM, this result explains the results found in this work for the Intercropping corn x Tanzania.…”

Section: Resultsmentioning

confidence: 86%

Silage production and the chemical composition of corn and Grass-tanzania intercropping

Paula

Menezes

Paris

et al. 2016

SCA

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The objective of this study was to evaluate the production and chemical composition of silages of grass Tanzania and corn, grown single or intercropping. The experiment was conducted at UTFPR Câmpus Dois Vizinhos in the period between October 2011 and July 2012, a 600 m² area. The treatments were: TMI -single corn, TMT -corn and grass Tanzania consortium at the time of sowing, TT -Tanzania grass single, TT32 -grass Tanzania silage to 32% dry matter (content similar to that of corn). The experimental design a randomized block design with four treatments and five replications. Agronomic evaluations were performed 120 days after planting, as follows: number of linear-1 plants metro, plant height and ear insertion and number of ears.plants -1 . In the grass we evaluated canopy height, where it was held the botanical separation in green leaves, dried and stem. Silage started being held in 100 mm PVC pipe (mini-silos) kept sealed for 60 days. At the time of opening of the silo were determined the following parameters: DM, pH, total loss of DM (PDM), specifies mass (SM), dry matter recovery indices (IRDM), losses gas (LG), and size particle. Chemical analysis of the results of OM, MM, ADF were higher for TMI treatments, TT and TT, respectively. CP and LIG had superior results for the treatments containing grass. Corn intercropping with grass Tanzania silage provides more crude protein and lignin compared to exclusive corn silage without damaging the crop yield. Silage maiden Tanzania has higher levels of ADF and crude protein as well as increased production of dry matter than corn silage. The grass Tanzania should be harvested with 30% DM as presented better pH values, higher dry matter recovery rate, less loss of gas as well as increased production of dry matter that Tanzania harvested at the same age corn.

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Fracionamento dos carboidratos de silagens de milho safrinha colhidas em diferentes alturas de corte

Abstract: RESUMO Este trabalho teve como objetivo verificar se há alteração na composição dos carboidratos de silagens de milho safrinha quando colhidas nas alturas de corte (AC) de 20, 45, 70

Cited by 10 publications

References 10 publications

Nutrient balance in the soil and nutritive characteristics of maize silage cut at different heights

Nutrient balance in the soil and nutritive characteristics of maize silage cut at different heights

Nutrition value of silage from corn hybrids in the State of Mato Grosso, Brazil - doi: 10.4025/actascianimsci.v34i2.11782

Silage production and the chemical composition of corn and Grass-tanzania intercropping

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