Avaliação da divergência nutricional de genótipos de cana-de-açúcar (Saccharum spp.)

Freitas, Acyr Wanderley de Paula; Pereira, José Carlos; Rocha, Fernanda Cipriano; Detmann, Edênio; Barbosa, Márcio Henrique Pereira; Ribeiro, Marinaldo Divino; Costa, Marcone Geraldo

doi:10.1590/s1516-35982006000100029

Cited by 31 publications

(35 citation statements)

References 19 publications

(10 reference statements)

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“…It can be noted that the lignin contents found in the current study are below the values cited in the literature (Freitas et al, 2006;Mello et al, 2006;Cruz et al, 2010). Therefore, it can be inferred that the fiber digestibility values can be higher.…”

Section: Discussioncontrasting

confidence: 78%

“…Average NDF contents were lower than the average 540 g kg −1 reported in the literature (Cruz et al, 2010;Freitas et al, 2006;Mello et al, 2006) and the average ADF contents of the present study were lower than the 284-335 g kg −1 described by Cruz et al (2010). In general, the NDF values in sugarcane are not high; however, the fiber quality is low and as the NDF content is increased, digestibility decreases (Van Soest, 1994).…”

Section: Discussioncontrasting

confidence: 77%

“…Thus, the studied varieties presented similarities for these variables and, consequently, showed similar IVDMD values (Table 4). Therefore, the varieties studied here showed superior nutritional quality to some reports found in the literature (Freitas et al, 2006;Mello et al, 2006;Cruz et al, 2010).…”

Section: Discussionsupporting

confidence: 51%

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Biometric and chemical characteristics of sugarcane varieties for use as forage in limiting soil water conditions

et al. 2017

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-This study aimed to evaluate the biometric and chemical characteristics of five sugarcane varieties (RB 863129, RB 867515, RB 92579, RB 943365, and RB 98710) grown in a semi-arid climate for use as forage. The experiment was designed as randomized blocks, in a 5 × 2 factorial arrangement (five sugarcane varieties and two evaluation times, 407 and 483 days). Response variables included dry matter productivity, morphological characteristics, chemical composition, digestibility, and ratios among neutral detergent fiber (NDF), Brix, and Pol. For the biometric analyses, there was an interaction effect between the evaluated varieties and harvest times on the variables fresh matter yield, uncovered internodes, and stalk density (MID -middle internode density). Regarding stalk density (MID), at 407 days, there was no significant difference among the varieties (1.19 g cm −3). For the fractionated parts, there was an effect of harvest time on the amount of fresh matter and dry matter of tops produced, which was highest at 407 days of age. A significant difference was detected among the varieties for contents of dry matter and total digestible nutrients. The variable in vitro neutral detergent fiber digestibility was influenced by the time, decreasing by 53.62 g kg −1 at 483 days. In the analysis of Brix and Pol yields per hectare, it was observed that variables ton of Brix per hectare and ton of sucrose per hectare averaged 15.12 and 10.14 t ha −1 , respectively, and the NDF:Brix and NDF:Pol ratios were higher for variety RB 863129, with 2.93 and 3.68, respectively. Variety RB 867515 is suggested for forage production in semi-arid conditions, as it is best adapted to the local soil-climatic conditions and to the water deficit, especially at 407 days.

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Section: Discussioncontrasting

confidence: 78%

Section: Discussioncontrasting

confidence: 77%

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Biometric and chemical characteristics of sugarcane varieties for use as forage in limiting soil water conditions

et al. 2017

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“…Crude protein content in sugarcane was 2.14%, similarly to those observed by Ferreira et al (2007). The concentration of ADF was 32.3% of DM, value within the range observed by Freitas et al (2006), which was between 30.18 and 35.99% of DM, for 13 genotypes of sugarcane. The content of NDF was 52.97% of DM.…”

Section: Resultssupporting

confidence: 83%

Evaluation of relative biological efficiency of additives in sugarcane ensiling

et al. 2012

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-The objective of this study was to evaluate the effects of adding alkalis on the fermentative pattern, aerobic stability and nutritive value of the sugarcane silage. A completely randomized design with 6 additives in two concentrations (1 or 2%), plus a control group, totalizing 13 treatments [(6×2)+1] with four replications, was used. The additives were sodium hydroxide (NaOH), limestone (CaCO 3 ), urea (CO(NH 2 ) 2 ), sodium bicarbonate (NaHCO 3 ), quicklime (CaO) and hydrated lime (Ca(OH) 2 ). The material was ensiled in 52 laboratory silos using plastic buckets with 12 L of capacity.Silos were opened 60 days after ensiling, when organic acids concentration, aerobic stability and chemical composition were determined. The Relative Biological Efficiency (RBE) was calculated by the slope ratio method, using the data obtained from ratio between desirable and undesirable silage products, according to the equation: D/U ratio = [lactic/(ethanol + acetic + butyric)]. All additives affected dry matter, crude protein, acid detergent fiber, neutral detergent fiber contents and buffering capacity. Except for urea and quicklime, all additives increased the in vitro dry matter digestibility. In general, these additives altered the fermentative pattern of sugarcane silage, inhibiting alcoholic fermentation and improving lactic acid production.The additive that showed the best RBE in relation to sodium hydroxide (100%) was limestone (89.4%). The RBE values of urea, sodium bicarbonate and hydrated lime were 49.2%, 47.7% and 34.3%, respectively.

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“…Provavelmente, esse resultado esteve associado à variedade de cana-deaçúcar forrageira IAC 86-2480 utilizada por esse autor, em comparação à variedade industrial SP 80-1816 utilizada neste estudo. Segundo Freitas et al (2006) necessário para que os microrganismos pudessem atuar de maneira completa na saturação do ácido linoléico (C18:2 c9,c12), diminuindo a quantidade de ácido linoléico conjugado disponível para absorção intestinal, uma vez que este produto é o primeiro intermediário no processo de biohidrogenação. Padre et al (2006) trabalharam com tourinhos e novilhos Angus terminados em pastagens e observaram valores de ALC de 0,13 × 0,45%, respectivamente.…”

Section: Resultsunclassified

Composição em ácidos graxos e qualidade da carne de tourinhos Nelore e Canchim alimentados com dietas à base de cana-de-açúcar e dois níveis de concentrado

Fernandes¹,

Sampaio²,

Henrique³

et al. 2009

R. Bras. Zootec.

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RESUMO -O objetivo neste trabalho foi avaliar a composição de ácidos graxos e a qualidade do contrafilé (músculo Longissimus lumborum) de tourinhos das raças Nelore e Canchim. Os animais foram terminados em confinamento e alimentados com dietas contendo cana-de-açúcar e dois níveis de concentrado (40 e 60% na matéria seca). Os concentrados foram compostos de grãos de girassol, milho, farelo de soja, levedura seca de cana-de-açúcar, uréia e núcleo mineral. O delineamento experimental foi o inteiramente ao acaso, em esquema fatorial 2 × 2 (grupo genético × nível de concentrado).Não foram observadas diferenças nos teores de umidade, proteína e extrato etéreo da carne. Os animais da raça Nelore apresentaram maiores concentrações de ácido linoléico conjugado (0,52%), ácidos graxos insaturados (46,82%) e também relações mais elevadas de ácidos graxos insaturados:saturados (1,02) e monoinsaturados:saturados (0,86) em comparação aos tourinhos da raça Canchim. Os tourinhos da raça Canchim apresentaram maior intensidade das cores vermelha e amarela no contrafilé e maior luminosidade da gordura de cobertura. Houve interação para força de cisalhamento, que foi menor nos tourinhos Nelore alimentados com 40% de concentrado. Tourinhos da raça Nelore apresentam carne com melhor composição de ácidos graxos na gordura intramuscular do ponto de vista da saúde humana.Palavras-chave: ácidos graxos insaturados, ácido linoléico conjugado, cor da carne, força de cisalhamento, grãos de girassol, sabor da carne Fatty acids composition and meat quality of Nellore and Canchim young bulls fed sugar cane-based diets with two concentrate levels ABSTRACT -The objective of this work was to evaluate the fatty acids composition and the qualitative and chemical characteristics of the loin meat (Longissimus lumborum muscle) of Nellore and Canchim young bulls. The animals were fedlot finished and fed sugar cane-based diets with two concentrate levels (40 and 60% of dry matter). The concentrates were formulated with sunflower grains, corn, soybean meal, dry sugar cane yeast from sugar and alcohol industry, urea and mineral mixture. The experimental design was a completely randomized design with a 2 × 2 factorial arrangement (genetic group × concentrate level), and the averages were compared by Tukey test at 5% of probability. Differences were not observed in the humidity, protein and ether extract contents of the loin meat. Nellore bulls had higher concentrations of conjugated linoleic acid (0.52%), unsaturated fatty acids (46.82%) and higher unsaturated:saturated (1.02), monounsaturated:saturated (0.86) ratios in their loin muscle when compared to Canchim bulls. Canchim bulls presented higher red and yellow color intensity of meat and higher backfat brightness. A significant genetic group × concentrate level interaction was detected for shear force, where Nellore bulls fed with 40% of concentrate had lower values. The results showed that Nellore bulls had better fat acid composition of the loin meat, concerning human health.Key Words: conjugated lin...

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Avaliação da divergência nutricional de genótipos de cana-de-açúcar (Saccharum spp.)

Cited by 31 publications

References 19 publications

Biometric and chemical characteristics of sugarcane varieties for use as forage in limiting soil water conditions

Biometric and chemical characteristics of sugarcane varieties for use as forage in limiting soil water conditions

Evaluation of relative biological efficiency of additives in sugarcane ensiling

Composição em ácidos graxos e qualidade da carne de tourinhos Nelore e Canchim alimentados com dietas à base de cana-de-açúcar e dois níveis de concentrado

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