|
|
|
| Registros recuperados: 61 | |
|
| |
|
|
| ECHEVERRRIA, J. R.; EUCLIDES, V. P. B.; SBRISSIA, A. F.; MONTAGNER, D. B.; BARBOSA, R. A.; NANTES, N. N.. |
| O objetivo deste trabalho foi avaliar o acúmulo de forragem e o valor nutritivo do híbrido de Urochloa 'BRS RB331 Ipyporã' (Urochloa brizantha x Urochloa ruziziensis) submetido à pastejo intermitente. Os tratamentos corresponderam às combinações entre as condições de pré?pastejo, interceptação de 95% da luz incidente e máxima interceptação de luz, e as de pós?pastejo, 10 e 15 cm de altura de resíduo, em delineamento de blocos ao acaso, em arranjo fatorial 2x2, com quatro repetições. Pastos manejados com 95% de interceptação da luz apresentaram maior taxa de acúmulo de forragem, proporção de folhas, relação folha:colmo, teor de proteína bruta e densidade populacional de perfilhos basilares (DPPb), em comparação àqueles manejados com máxima interceptação da... |
| Tipo: Artigo de periódico |
Palavras-chave: Altura do dossel; Densidade populacional de perfilhos; Híbrido de braquiária; Manejo de pastejo; Titler population density; Sward height; Brachiaria hybrid; Brachiaria brizantha; Brachiaria ruziziensis; Urochloa brizantha; Urochloa ruziziensis; Grazing management. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061646 |
| |
|
| |
|
| |
|
|
| Euclides,Valéria Pacheco Batista; do Valle,Cacilda Borges; Macedo,Manuel Cláudio Motta; Almeida,Roberto Giolo de; Montagner,Denise Baptaglin; Barbosa,Rodrigo Amorim. |
| This paper aims to discuss the scientific progress obtained in the past ten years in genetics and plant breeding, soil fertility and plant nutrition and the importance of target sward conditions for planning, controlling and recommending management grazing of tropical grasses. In addition, progress in crop-livestock integration systems and management alternatives for mitigation of greenhouse gas emission by beef cattle production systems, two very important areas related to sustainable production systems, will also be discussed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop and pasture association; Grazing management; Methane emission; Tropical forage. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300018 |
| |
|
|
| GUARDA, V. D. A.; GUARDA, R. D. A.. |
| A few decades ago we sought the understanding of the functioning of Brazilian ecosystems. During these years, changes in the way land use were influenced primarily by economic issues involving the process of valuation of land in different regions. Furthermore, developments in research have provided productive increments that were well characterized in some phases. This paper aims to trace a brief history of the distribution of grassland ecosystems in Brazil and show how it has been the advances in research on forages and pastures in the country, pointing its evolution, transition times and trends. Moreover, it purports to show a perspective of the dynamics of occupation of Brazilian territory by these ecosystems. The information is presented on three... |
| Tipo: Artigo de periódico |
Palavras-chave: Cerrado; Manejo; Pastagem; Pastejo; Ecossistema; Grazing management; Grasslands; Agroecosystems. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/983390 |
| |
|
|
| FREITAS, A. C. R. de; COSTA, F. de S.; GOMES, E. G.; SOUZA, G. da S. e; SANTOS, M. A. S. dos; SENA, A. L. dos S.; FERNANDES, P. C. C.; BACA, J. F. M.; KLEPKER, D.. |
| This paper evaluated the municipal performance of beef cattle production systems in 2006 and 2017, in relation to the enteric methane emissions in CO2 equivalent. The 109 municipalities evaluated belong to the Cerrado biome of the Maranhao state,Brazil. In this period the cattle population increased 20% and reached 3.3 million head; the pasture area remained at 2.6 million hectares. The total enteric methane emission, computed by the Agriculture and Land Use National Greenhouse Gas Inventory Software (ALU), was 3,867 Gg of CO2eq in 2006 and 4,654 Gg of CO2eq in 2017. The municipalities with higher cattle numbers were classified as ?Regions of net CO2 sink?. The performance score was calculated considering the pasture and forest area, herd size, enteric... |
| Tipo: Parte de livro |
Palavras-chave: GEE; Pastizales; Degradación del suelo; Efecto invernadero; Gases de invernadero; Reservorios de carbono; Manejo de pastoreo; Bioma Cerrado; Maranhão; Pastagem; Deterioração do Solo; Gado de Corte; Sistema de Produção; Efeito Estufa; Metano; Carbono; Pastures; Soil degradation; Greenhouse effect; Greenhouse gases; Carbon sinks; Grazing management. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112199 |
| |
|
| |
|
| |
|
|
| SOUZA, J. da S.; DIFANTE, G. dos S.; GURGEL, A. L. C.; VERAS, E. L. L.; VILELA, I. M. M.; COSTA, A. B. G.; EMERENCIANO NETO, J. V.; MONTAGNER, D. B.. |
| A composição química das plantas forrageiras é, sem dúvida, um dos mais importantes fatores relacionados com a produção animal a ser obtida em condições de pastejo. As pastagens tropicais apresentam alto potencial de produção de massa de forragem, medidas de manejo para equacionar a oferta de forragem e seu valor nutritivo podem oferecer alimento de qualidade capaz de suprir as exigências do animal. O conhecimento da composição química da forragem oferecida e consumida pelo animal é de suma importância para obter elevados níveis de produção animal, além de auxiliar na tomada de decisão do melhor momento de inserir os animais no sistema de pastejo (Janusckiewicz et al., 2010). Entretanto, Van Soest. (1994) relata que a composição química varia com a espécie... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Panicum Maximum; Crude protein; Grazing management. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102407 |
| |
|
| |
|
|
| Martins,Clóvis David Medeiros; Schmitt,Daniel; Duchini,Paulo Gonçalves; Miqueloto,Tiago; Sbrissia,André Fischer. |
| ABSTRACT: This study evaluated the leaf area index (LAI) recovery mechanisms and forage accumulation rates on the regrowth of different grass species subjected to different defoliation intensities. For that purpose, plots of Pennisetum clandestinum (kikuyugrass), Lolium multiflorum (annual ryegrass), and Avena strigosa (black oats) were defoliated from 20 to 80 % of their initial heights (25, 20, and 25 cm, respectively). At different increments in height, forage samples were collected to ground level and used to estimate tiller population density (TPD), leaf area per tiller (LA), and forage mass. From these data, we calculated the leaf area index (LAI), average leaf area index (aLAI), and average and instantaneous forage accumulation rate (FAR and IFAR,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing heights; Grazing management; Intermittent stocking; Sward targets. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200504 |
| |
|
|
| Martins,Clóvis David Medeiros; Schmitt,Daniel; Duchini,Paulo Gonçalves; Miqueloto,Tiago; Sbrissia,André Fischer. |
| ABSTRACT: This study evaluated the leaf area index (LAI) recovery mechanisms and forage accumulation rates on the regrowth of different grass species subjected to different defoliation intensities. For that purpose, plots of Pennisetum clandestinum (kikuyugrass), Lolium multiflorum (annual ryegrass), and Avena strigosa (black oats) were defoliated from 20 to 80 % of their initial heights (25, 20, and 25 cm, respectively). At different increments in height, forage samples were collected to ground level and used to estimate tiller population density (TPD), leaf area per tiller (LA), and forage mass. From these data, we calculated the leaf area index (LAI), average leaf area index (aLAI), and average and instantaneous forage accumulation rate (FAR and IFAR,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing heights; Grazing management; Intermittent stocking; Sward targets. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200403 |
| |
|
|
| Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Monteiro,Hélida Christhine de Freitas; Silva,Sila Carneiro da; Vilela,Hélio Henrique; Silveira,Márcia Cristina Teixeira da; Rodrigues,Carlindo Santos; Sbrissia,André Fischer. |
| We assessed the accumulation dynamics of forage and its components in Elephant grass cv. Napier (Pennisetum purpureum Schum.) that were subjected to three post-grazing height treatments (30, 50, and 70 cm) from February through May 2009 (experiment one) and December 2009 through May 2010 (experiment two). In experiment one, the grazing events started when the light interception by the canopy reached 95%. The same was adopted for experiment two, except for the first grazing event, which was based on the height of the apical meristems of basal tillers. The experimental design for both experiments was a randomized complete block with three replications. The pastures that were managed at a post-grazing height of 30 cm exhibited lower rates of leaf and stem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing management; Growth; Light interception; Pennisetum purpureum; Senescence; Tiller categories. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900004 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
| Registros recuperados: 61 | |
|
|
|
