Composição químico-bromatológica, produção de gás, digestibilidade in vitro da matéria seca e NDT estimado da silagem de sorgo com diferentes proporções de panículas
Abstract:RESUMO -Foram objetivos do presente trabalho avaliar as alterações na composição bromatológica, nas frações nitrogenadas e de carboidratos, estimar a taxa de digestão dos carboidratos fibrosos (CF) e não-fibrosos (CNF), determinar a digestibilidade in vitro da matéria seca (DIVMS) e estimar o NDT da silagem de sorgo com as seguintes proporções de panículas: 0, 20, 40, 60, 80 e 100%. Foram determinados os teores de matéria seca (MS), proteína bruta (PB), extrato etéreo (EE), matéria mineral (MM), fibra em deter… Show more
“…The values observed in this study corroborated with the literature data (Rocha Jr. et al, 2000;Cândido et al, 2002;Molina et al, 2002;Rodrigues et al, 2002;Neumann et al, 2005;Skonieski et al, 2010).…”
Section: Resultssupporting
confidence: 92%
“…The average concentration of CP was 6.47 dag/kg DM in the silage hybrids, higher than those observed by Skonieski et al (2010) and Cabral et al (2003), of 6.10 and 5.53 dag/kg DM, respectively. For Neumann et al (2002b), variations in the proportion of stems, leaves, and panicles of sorghum plants are the main responsible for variations in the protein content between different hybrids, since the appropriate fermentation profile minimizes losses of nutrients during the fermentation process.…”
Section: Resultscontrasting
confidence: 63%
“…Ribeiro et al (2007), evaluating sorghum hybrids, observed proper fermentation profile of the silage in terms of DM content, crude protein, ammonia nitrogen in relation to total nitrogen and pH, with values of 32.65, 6.82, 1.92 and 4.02, respectively. The nutritional value of sorghum silage depends on the characteristics of the hybrid used, such as height, percentage of panicles, stem and leaf, and the stage of maturity at harvest (Cândido et al, 2002). Therefore, the objective was to evaluate the divergences of bromatological and fermentation characteristics of the silages of 25 sorghum hybrids.…”
-The objective of this study was to evaluate the divergence of bromatological and fermentative characteristics of silages of 25 sorghum (Sorghum bicolor L. Moench) hybrids. The experimental design was completely randomized with 25 treatments and four replications. The mean values of pH differed with variation from 3.45 to 3.87 for hybrids 866005 and 870051, respectively, and the mean pH value was 3.66. The average percentage of lactic acid ranged from 2.90 to 7.43 dag/kg of dry matter (DM) in hybrids 870035 and 866005, respectively, with an average of 4.65 dag/kg DM.Through cluster analysis by the Tocher method and average Euclidean distance based on the fermentative characteristics, five groups were formed: one with 18 hybrids, another with four and three groups with one hybrid in each. In group three, there were the hybrids that showed the highest values of lactic acid. Hybrids 870025, 870035, 870081, 870095, 866034, and 870031 showed higher DM content and the hybrid BRS 610 had the lowest average compared with the others. Hybrids 1F305, BRS 610, Volumax, and XBS60329 had the lowest levels of non-fiber carbohydrates and higher neutral detergent fiber corrected for ash and protein. Despite the fermentative and bromatological divergences between hybrids, they are not a limiting factor to silage production.
“…The values observed in this study corroborated with the literature data (Rocha Jr. et al, 2000;Cândido et al, 2002;Molina et al, 2002;Rodrigues et al, 2002;Neumann et al, 2005;Skonieski et al, 2010).…”
Section: Resultssupporting
confidence: 92%
“…The average concentration of CP was 6.47 dag/kg DM in the silage hybrids, higher than those observed by Skonieski et al (2010) and Cabral et al (2003), of 6.10 and 5.53 dag/kg DM, respectively. For Neumann et al (2002b), variations in the proportion of stems, leaves, and panicles of sorghum plants are the main responsible for variations in the protein content between different hybrids, since the appropriate fermentation profile minimizes losses of nutrients during the fermentation process.…”
Section: Resultscontrasting
confidence: 63%
“…Ribeiro et al (2007), evaluating sorghum hybrids, observed proper fermentation profile of the silage in terms of DM content, crude protein, ammonia nitrogen in relation to total nitrogen and pH, with values of 32.65, 6.82, 1.92 and 4.02, respectively. The nutritional value of sorghum silage depends on the characteristics of the hybrid used, such as height, percentage of panicles, stem and leaf, and the stage of maturity at harvest (Cândido et al, 2002). Therefore, the objective was to evaluate the divergences of bromatological and fermentation characteristics of the silages of 25 sorghum hybrids.…”
-The objective of this study was to evaluate the divergence of bromatological and fermentative characteristics of silages of 25 sorghum (Sorghum bicolor L. Moench) hybrids. The experimental design was completely randomized with 25 treatments and four replications. The mean values of pH differed with variation from 3.45 to 3.87 for hybrids 866005 and 870051, respectively, and the mean pH value was 3.66. The average percentage of lactic acid ranged from 2.90 to 7.43 dag/kg of dry matter (DM) in hybrids 870035 and 866005, respectively, with an average of 4.65 dag/kg DM.Through cluster analysis by the Tocher method and average Euclidean distance based on the fermentative characteristics, five groups were formed: one with 18 hybrids, another with four and three groups with one hybrid in each. In group three, there were the hybrids that showed the highest values of lactic acid. Hybrids 870025, 870035, 870081, 870095, 866034, and 870031 showed higher DM content and the hybrid BRS 610 had the lowest average compared with the others. Hybrids 1F305, BRS 610, Volumax, and XBS60329 had the lowest levels of non-fiber carbohydrates and higher neutral detergent fiber corrected for ash and protein. Despite the fermentative and bromatological divergences between hybrids, they are not a limiting factor to silage production.
“…Cabral et al (2003), evaluated the nutritive value of sorghum silages and observed a linear increase in DM content with an increment in panicle ratio, which helps to explain the results obtained.…”
Sorghum stands out among other plants recommended for ensiling due to its forage composition, its resistance to drought, and its planting range. New cultivars of grain and sweet sorghum that can be used for silage production are available, but there is little information regarding their ensiling characteristics. The aim of this study was to evaluate the fermentation characteristics at the ensiling of different purpose sorghum cultivars, at two crop periods. The trial was carried out at the Plant Production Department of the Federal Institute of Education, Science and Technology of Rondônia, Colorado do Oeste campus, Rondônia, Brazil, and chemical analyses were performed at the Laboratory of Animal Nutrition, at the Federal University of Mato Grosso, Cuiabá campus, Mato Grosso, Brazil. The experimental design used was a randomized block, in split-plot design, with four replicates. The plot treatments consisted of six sorghum cultivars grown for different purposes (grain sorghum: BRS 308 and BRS 310; forage sorghum: BR 655 and BRS 610; sweet sorghum: BRS 506 and CMSXS 647). Split-plot treatments consisted of two cropping seasons (first crop and second crop). The grain sorghum cultivar BRS 310 was the only one that had suitable dry matter content for ensiling; however, it was also the only one that did not show ideal water soluble carbohydrate content for ensiling. Nevertheless, all treatments presented pH below than 4.2 and ammonia nitrogen lower than 12% of total N, which indicates that the fermentation inside the silo had proceeded well. For sweet sorghum cultivars, higher ethanol and butyric acid content were observed for the first crop than for the second crop. All evaluated sorghum cultivars can be used for silage production, but the use of sweet sorghum is recommended at the second crop. Key words: Alcoholic fermentation. Fermentability coefficient. Grain sorghum. Sorghum bicolor. Sweet sorghum.
ResumoO sorgo se destaca entre as plantas recomendadas para a ensilagem em razão de sua composição
“…These high values for VF1 are due to the higher NFC content presented by these genotypes (Table 2), conferring greater availability of fermentable substrate and providing greater gas production for this fraction. Degradation rates for the rapidly degradable fraction (C1) were low, averaging 0.068/h, since reports of values from 0.1 to 0.2/h, are frequent (Cabral et al, 2003;Senger et al, 2007;Detmann et al, 2009). The highest gas productions from the fermentation of the slowly degradable fraction (VF2) were found for accessions 31828 and 31534.…”
-The objective of this study was to evaluate the nutritional divergence between ten genotypes of forage peanut, based on chemical composition as well as fermentation and in vitro degradation kinetic characteristics. Treatments consisted of ten genotypes of Arachis pintoi, namely eight accessions (31135, 30333, 15121, 31828, 15598, 31534, 13251 and 31496) and two cultivars (cv. Belmonte and cv. Amarillo). The genotypes were harvested in each plot at a height of 3 cm from the ground, in 42-day intervals, during the time of heaviest rainfall. For the multivariate analysis the following variables, the following were used: crude protein, neutral detergent fiber, potential degradation in 48 hours, degradation rate of insoluble potentially degradable fraction and degradation rate of non-fibrous carbohydrate. The application of the hierarchical clustering analysis, using the Euclidian distances matrix of standardized averages allowed for the identification of five homogeneous groups. Among them, the accessions 31828, 31534, 15121 and cv. Belmonte stood out nutritionally among the remaining genotypes evaluated, depicting as promising for the utilization in ruminant feeding.
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