The buffering constituents of herbage and of silage

Playne, M. J.; McDonald, P.

doi:10.1002/jsfa.2740170609

Cited by 587 publications

(391 citation statements)

References 14 publications

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“…Em seguida, os teores de matéria seca (MS), foram utilizados para calcular a produtividade de massa seca verde total (PMSV), extrapoladas para kg.ha -1 . Amostras do material in natura picado também foram congeladas em sacos plásticos para determinação do poder tampão (PT), pelo método de Playne e Mcdonald (6) . Pesaram-se de 15 a 20 g do material fresco e efetuou-se a maceração em liquidificador com 250 mL de água destilada.…”

Section: Methodsunclassified

Valor Nutritivo De Silagem De Capim-Piatã Em Monocultivo E Em Consórcio Com Sorgo De Corte E Pastejo

et al. 2016

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ResumoObjetivou-se avaliar a influência da idade de corte no valor nutritivo de silagem de capim-piatã em monocultivo e em consórcio com sorgo. Utilizou-se o delineamento em blocos casualizados com quatro repetições. Os tratamentos foram dispostos em esquema de parcelas subdivididas, como parcelas sistemas (capim-piatã; sorgo de corte e pastejo e consórcio) e como subparcelas as idades de corte (70, 90 e 110 dias após a semeadura). Os minissilos foram abertos aos 46 dias, avaliando-se na silagem os teores de proteína bruta (PB), fibra em detergente ácido (FDA), fibra em detergente neutro (FDN), nutrientes digestíveis totais (NDT), nitrogênio amoniacal, lignina e pH. Com o avanço da idade, ocorreu redução linear no teor de PB de 0,12; 0,08 e 0,16 unidades percentuais a cada dia após a semeadura nas silagens de sorgo, sorgo+capim e capim-piatã, respectivamente. Verificouse aumento linear no valor de pH da silagem de sorgo + capim, em função do avanço na idade de 0,03 unidade a cada dia após a semeadura. Nas silagens de sorgo e de capim em monocultivo, o pH apresentou valores médios de 4,63 e de 5,20, respectivamente. Os sistemas com sorgo apresentam potencial para produção de silagem de boa qualidade aos 70 dias de idade. Palavras-chave: gramíneas tropicais; idade de corte; minissilo; silagem. AbstractThe objective of this study was to evaluate the influence of the time of cutting on the nutritive value of Piatã silage grass in monocrop and intercropping with sorghum for cutting and grazing. We used a randomized block design with four replications. Treatments were arranged in a split plot design, with systems as plots (Piata grass, sorghum for cutting and grazing, and intercropping), cutting ages as sublots (70, 90, and 110 days after sowing). The minisilos were opened at 46 days to evaluate silage crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrients (TDN), ammonia nitrogen, lignin, and pH. We observed significant interaction between system and age on the variables CP, ADF, NDF, lignin and pH. With the advancement of age, there was a linear reduction in crude protein content of 0.12, 0.08, and 0.16 percentage units for each day after sowing in sorghum silage, sorghum grass and grass + Piata, respectively. There was a linear

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Section: Methodsunclassified

Valor Nutritivo De Silagem De Capim-Piatã Em Monocultivo E Em Consórcio Com Sorgo De Corte E Pastejo

et al. 2016

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“…Before ensiling, silage samples were collected from all treatments plus additive samples to determine the chemical composition. Samples of the different treatments were frozen for subsequent determination of soluble carbohydrates content according to the methodology of Lever (1972) and buffering capacity according to Playne and McDonald (1966). On average 2.06 kg silage per silo were packaged resulting in equivalent density to 294 kg of silage per m 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The silos were kept in protected location under room temperature. The buffering capacity was measured according to the methodology of Playne and McDonald (1966).…”

Section: Methodsmentioning

confidence: 99%

Use of additives and pre-wilting in Tifton 85 bermudagrass silage production

et al. 2014

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The use of tropical grasses silage has become common in ruminant feed. An experiment was conducted to evaluate the fermentation characteristics, nutritional value, pH, fermentative capacity, ammonia nitrogen / total nitrogen (NH3N/total N) of Tifton 85 bermudagrass grass silage with different additives and wilting. The treatments were: pre-drying in the sun for two hours before silage, use of inoculant-enzymatic addition of soybean hulls, corn grits addition and use of salt in the surface layer of the silo. The experimental design was completely randomized with 6 treatments and 4 replications. Plants of Tifton 85 bermudagrass with 38 days of growth were ensiled in experimental silos with Bunsen valve type with packing densities of 236 kg of silage per m 3 for Tifton 85 bermudagrass pre-dried in the sun and 294 kg of silage per m 3 for the other treatments. The proportions of soybean hulls and corn grits added to the silage were calculated based on the initial DM content of Tifton 85 bermudagrass order to obtain MS 320 g kg -1 for the material to be ensiled. The buffering capacity did not differ between treatments in getting 29.56 (meqHCl/100gMS). It was found that the concentration of ammonia nitrogen did not differ between silages and remained low (3.22 g kg -1 ), the pH after silo opening was also similar with an average of 4.09 getting above 4.2 only in Tifton 85 bermudagrass silage without pre-treatment. The crude protein was higher in silages Tifton 85 bermudagrass and Tifton 85 bermudagrass with soybean hulls (17.48 g kg -1 ). The use corn grits caused a reduction in the values of NDF. The use of salt on the surface the layer reduced the production of latic and acetic acid.Index terms: Acid latic, corn grits, enzymatic-bacterian inoculant, ammonia nitrogen, soybean hulls. RESUMOO uso de silagem de gramíneas tropicas tem se tornado comum na alimentação de ruminante. Conduziu-se um experimento com o objetivo de avaliar o perfil fermentativo e valor nutricional da silagem de capim Tifton 85 com diferentes aditivos e emurchecimento. Os tratamentos foram: pré-secagem ao sol por 2 horas antes de ensilar, uso de inoculante bacteriano-enzimático, adição de casca de soja, adição de quirera de milho e uso de sal grosso na camada superficial do silo. O delineamento experimental foi inteiramente casualizado, com 6 tratamentos e 4 repetições. Plantas de capim Tifton 85 com 38 dias de crescimento foram ensiladas em silos experimentais com válvula tipo Bunsen com densidades de compactação de 236 kg de silagem por m 3 para o Tifton 85 pré-seco ao sol e 294 kg de silagem por m 3 para os demais tratamentos. As proporções de casca de soja e quirera de milho, adicionados à silagem, foram calculados com base no teor de MS inicial do Tifton 85 visando à obtenção de MS de 320 g kg -1 para o material a ser ensilado. A capacidade tampão não diferiu entre tratamentos ficando em 29,56 (meqHCl/100gMS). Verificou-se que os teores de nitrogênio amoniacal não diferiram entre as silagens e mantiveram-se baixos (32,2 g kg -1 ), o ...

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“…The buffer capacity was determined in predried samples, as previously described in Playne and McDonald (1966), and the soluble carbohydrates were determined according to the method of Yemm and Willis (1954), modified by Bezerra Neto and Barreto (2004). Soluble carbohydrates were extracted with a solution of 80 % alcohol in a reaction containing acid solution that was previously prepared using anthrone.…”

Section: Methodsmentioning

confidence: 99%

Elephant grass clones for silage production

Santos

Lira

Guim

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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Ensiling warm-season grasses often requires wilting due to their high moisture content, and the presence of low-soluble sugars in these grasses usually demands the use of additives during the ensiling process. This study evaluated the bromatological composition of the fodder and silage from five Pennisetum sp. clones (IPA HV 241, IPA/UFRPE Taiwan A-146 2.114, IPA/UFRPE Taiwan A-146 2.37, Elephant B, and Mott). The contents of 20 Polyvinyl chloride (PVC) silos, which were opened after 90 days of storage, were used for the bromatological analysis and the evaluation of the pH, nitrogen, ammonia, buffer capacity, soluble carbohydrates, and fermentation coefficients. The effluent losses, gases and dry matter recovery were also calculated. Although differences were observed among the clones (p < 0.05) for the concentrations of dry matter, insoluble nitrogen in acid detergents, insoluble nitrogen in neutral detergents, soluble carbohydrates, fermentation coefficients, and in vitro digestibility in the forage before ensiling, no differences were observed for most of these variables after ensiling. All of the clones were efficient in the fermentation process. The IPA/UFRPE TAIWAN A-146 2.37 clone, however, presented a higher dry matter concentration and the best fermentation coefficient, resulting in a better silage quality, compared to the other clones.

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The buffering constituents of herbage and of silage

Cited by 587 publications

References 14 publications

Valor Nutritivo De Silagem De Capim-Piatã Em Monocultivo E Em Consórcio Com Sorgo De Corte E Pastejo

Valor Nutritivo De Silagem De Capim-Piatã Em Monocultivo E Em Consórcio Com Sorgo De Corte E Pastejo

Use of additives and pre-wilting in Tifton 85 bermudagrass silage production

Elephant grass clones for silage production

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