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| Registros recuperados: 150 | |
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| Ramos-Trejo,O. Santiago; Victoria-Graniel,C. Arturo; Sandoval-Gío,J. José. |
| Pennisetum purpureum has an extended use as forage and further knowledge related to the seasonal influence and fertilization could improve its cultivation. The effects of dry and rainy season and application of fertilizers (200-60-00), on the yield of four varieties of P. purpureum (Taiwan, OM-22, Maralfalfa, CT-115), and a homogeneous mixture of them were evaluated. The study, with four replicates, was conducted at Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Tizimín, México, and lasted 10 months. Dry matter (DM), crude protein, leaf/stem ratio, stalks per cluster, and plant height, were assessed. Mean values of DM of all treatments in rainy season were significantly different with respect of dry season (36 and 28 t ha-1). Dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Dry matter; Tropical forages; King Napier grass; Yield. |
| Ano: 2015 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000800002 |
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| Cardinal, Mireille; Cornet, Josiane; Donnay-moreno, Claire; Gouygou, Jean-paul; Berge, Jean-pascal; Rocha, E.; Soares, S.; Escorcio, C.; Borges, P.; Valente, L. M. P.. |
| This study describes the variability of important quality traits in gilthead sea bream produced under intensive conditions in Southern Europe and purchased in a French market (Nantes). Chemical, sensory and histological characteristics were performed on 18 samples delivered over a year. All fish presented far lower dioxin and DL-PCBs or heavy metals concentrations than the maximum limit level set by EC Regulation, being totally safe for human consumption. Fat content and nutritional values reflected by n-3 and n-6 polyunsaturated fatty acids (PUFA) levels were parameters with high variability according to the season or the fish farm. Values of n-3 PUFA ranged from 0.9% to 8.6% and those of n-6 PUFA from 9.3% to 16.6%, corresponding to a respective... |
| Tipo: Text |
Palavras-chave: Quality parameters; Sea bream; Sparus aurata; Farmed fish; Chemical composition; Fatty acids; Sensory evaluation; Histological characteristics. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00016/12757/9691.pdf |
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| Pinho,Ricardo Martins Araujo; Santos,Edson Mauro; Campos,Fleming Sena; Ramos,João Paulo de Farias; Macedo,Carlos Henrique Oliveira; Bezerra,Higor Fábio Carvalho; Perazzo,Alexandre Fernandes. |
| This study aimed to evaluate the fermentation characteristics, losses and the chemical composition of two pearl millet genotypes silages submitted to nitrogen fertilization. The experimental design was a completely randomized blocks in a split plot scheme 2x5 (two nitrogen genotypes doses x five doses of nitrogen), with four replicates. Nitrogen doses were 0, 20, 40, 60, 80kg ha-1 and the pearl millet genotypes were the variety ADR300 and the hybrid ADR7010. The hybrid ADR 7010 showed average lactic acid content higher than the variety ADR 300, at all doses of N, recording values ranging from 4.09 to 10.46dag kg-1. There was an interaction between nitrogren doses and genotypes for the neutral detergent fiber, which ranged from 51.81 to 63.63dag kg-1 of dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Fermentation characteristics; Lactic acid; Semi-arid. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000500025 |
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| EMBRAPA. Centro de Pesquisa Agroflorestal da Amazônia Ocidental (Manaus, AM).. |
| Sistema de produção para a cultura do guaraná - a)produção de mudas: propagação do guaranazeiro, enraizamento de estacas, tratos culturais no viveiro, coeficientes técnicos para produção de mudas a partir de plantas enraizadas; b) planejamento para o plantio: condições edafoclimáticas, preparo do solo, plantio no local definitivo, tratos culturais, floração e frutificação, colheita, despolpamento, secagem, comercialização, usos, composição química. Coeficientes técnicos para implantação de 1ha de guaraná. |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Paullinia cupana var; Sorbilis; Brasil; Amazonas; Production; Harvest; Processing.; Colheita; Composição Química; Economia; Guaraná; Processamento; Secagem; Semente; Sistema de Produção.; Drying; Economics; Chemical composition; Seeds.. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/666040 |
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| Weiler,Douglas Adams; Giacomini,Sandro José; Aita,Celso; Schmatz,Raquel; Pilecco,Getúlio Elias; Chaves,Bruno; Bastos,Leonardo Mendes. |
| ABSTRACT Cover crops have numerous benefits when used in a no-till system. Understanding the processes of decomposition and N release of summer cover crops (SCC) may help select species and management to be used in cropping systems. This study aimed to evaluate C and N loss of SCC shoots. Six SCCs were evaluated: velvet bean (Mucuna aterrima), pearl millet (Pennisetum americanum), dwarf pigeon pea (Cajanus cajan), sunn hemp (Crotalaria juncea), showy rattlebox (Crotalaria spectabilis), and jack bean (Canavalia ensiformis). The experiment was conducted for two years under no-till in soil classified as Typic Hapludalf (Argissolo). The C and N remaining of crop shoots were evaluated for 140 days using litter bags and the results were fitted with a simple... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Legumes; Cropping system; Crop residue; Nutrient cycling. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100414 |
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| Lopes Galasso, Helena; Callier, Myriam; Bastianelli, Denis; Blancheton, Jean-paul; Aliaume, Catherine. |
| In aquaculture, it is extremely important to determine the composition of fish farm waste to evaluate its potential impacts and to improve its reuse. Near-infra red spectroscopy (NIRS), an alternative to standard chemical analytical techniques, is a quick non-invasive method to assess physical and chemical composition, reducing the cost of routine analysis. We developed NIRS calibration models for organic matter (OM), total organic carbon (TOC), total organic nitrogen (TON), the carbon/nitrogen ratio (C/N), total phosphorus (TP) and the lipid content of marine fish particulate waste. To obtain a wide range of compositions of fish waste, decomposition time, feed loss, and inter-specific variations were taken into account. The NIRS calibration models were... |
| Tipo: Text |
Palavras-chave: Near infrared spectroscopy; Fish farm waste; Faeces; Dicentrarchus labrax; Chemical composition. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00382/49369/49771.pdf |
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| Guimarães,Cíntia Gonçalves; Pereira,Rosana Cristina; Ribeiro,Karina Guimarães; Viana,Maria Celuta Machado; Santos,José Barbosa dos. |
| ABSTRACT The objective of this study is to evaluate the forage mass, chemical composition, mineral content, and mineral absorption in signal grass (Urochloa decumbens) grown with different eucalypt clones in an integrated crop-livestock-forest (iCLF) system. The split-split-plot scheme included three replicates arranged in a completely randomized block design. The eucalyptus clones GG 100 and I 144 (Eucalyptus grandis × Eucalyptus urophylla) and VM 58 (Eucalyptus grandis × Eucalyptus camaldulensis) were distributed in the plots. The split plots corresponded to the growth ages of signal grass (10, 17, 24, 31, 38, 45, and 52 days after corn harvest for silage). The split-split plots corresponded to two sampling sites: center of the inter-row and soil under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Mineral absorption; Growth ages; Sampling sites. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300512 |
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| Garcia,Jaime; Cozzolino,Daniel. |
| The objective of the study was to evaluate the potential of near infrared reflectance (NIR) spectroscopy as a rapid method to predict the chemical composition of forage in broad-based calibration models. In total, 650 samples representing a wide range of chemical characteristics, phenological states and origins were scanned in an NIR instrument. The coefficient of determination in calibration (R²) and standard error in cross validation (SECV) for the NIR calibration models were as follows: dry matter 0.95 (SECV: 0.7%), crude protein 0.98 (SECV: 0.98%), ash 0.90 (SECV: 0.99%), in vitro organic matter digestibility 0.90 (SECV: 3.6%), acid detergent fiber 0.95 (SECV: 2.0%) and neutral detergent fiber 0.86 (SECV: 5.4%) on a dry matter basis. The results... |
| Tipo: Journal article |
Palavras-chave: Forage quality; NIR; Chemical composition; Near infrared analysis. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000100005 |
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| Ferreira,Silvia Letícia; Vasconcellos,Ricardo Souza; Rossi,Robson Marcelo; Paula,Vinicius Ricardo Cambito de; Fachinello,Marcelise Regina; Huepa,Laura Marcela Díaz; Pozza,Paulo Cesar. |
| ABSTRACT: The chemical composition of corn is variable and the knowledge of its chemical and energetic composition is required for an accurate formulation of the diet. This study aimed to determine the chemical composition, that is, dry matter (DM), mineral matter (MM), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), crude protein (CP), gross energy (GE) and energetic values of different varieties (batches) of corn and validate mathematical models to predict the metabolizable energy values (ME) of corn for pigs using near infrared spectroscopy (NIRS). Corn samples were scanned in the spectrum range between 1,100 and 2,500 nm, the model parameters were estimated by the modified partial least squares (MPLS) method. Ten... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Prediction equations; Validation; Swine. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600486 |
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| Registros recuperados: 150 | |
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