
Janerson José Coêlho, Alexandre Carneiro Leão de Mello, Mércia Virgínia Ferreira dos Santos, José Carlos Batista Dubeux, Márcio Vieira da Cunha, M. A. Lira,
Abstract: The objective of this work was to estimate the repeatability (r) and the number of samples required to measure the nutritional value of four warm-season forage grasses growing in a semiarid region. The grasses evaluated were Urochloa mosambicensis, Cenchrus ciliaris, Digitaria pentzii, and Megathyrsus maximus. Evaluations occurred under two forage management conditions: stockpiling and grazing. Hand-plucked forage samples were analyzed for dry matter (DM), crude protein (CP), neutral detergent ...
Tópico(s): Plant Taxonomy and Phylogenetics
2018 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira

Suellen Brandão de Miranda Costa, Alexandre Carneiro Leão de Mello, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, M. A. Lira, João Tiago Correia Oliveira, Valéria X. O. Apolinário,
Tree legumes are a viable option to increase ecosystem services provided by warm‐climate grasslands. Benefits of using tree legumes in silvopasture systems (SPS) include the provision of shade for livestock, biological N 2 fixation, and C sequestration. This study assessed cattle performance and pasture characteristics in signalgrass ( Brachiaria decumbens Stapf.) pastures in monoculture or in SPS. The following treatments were assessed: (i) signalgrass/sabiá ( Mimosa caesalpiniifolia Benth.), (ii) signalgrass/ ...
Tópico(s): Agronomic Practices and Intercropping Systems
2016 - Wiley | Agronomy Journal

Gustavo José Braga, Alexandre Carneiro Leão de Mello, Carlos Guilherme Silveira Pedreira, Henrique Rocha de Medeiros,
O objetivo deste trabalho foi avaliar o efeito da intensidade de pastejo na taxa diária de acúmulo de forragem e na fotossíntese foliar líquida do capim-tanzânia, em pastagens manejadas sob lotação intermitente. O experimento foi conduzido de novembro de 1999 a outubro de 2000, em delineamento de blocos ao acaso, com quatro repetições. Os tratamentos experimentais foram três quantidades de massa de forragem verde remanescente (1.000, 2.500 e 4.000 kg ha -1), aplicados em ciclos de pastejo de 36 dias ( ...
Tópico(s): Agroforestry and silvopastoral systems
2009 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira

Rayanne Thalita de Almeida Souza, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha, Geane Dias Gonçalves, Valdson José da Silva, Alexandre Carneiro Leão de Mello, James P. Muir, Robson Elpídio Pereira Ribeiro, José Carlos Batista Dubeux,
This two-year study evaluated the effect of Pennisetum purpureum genotypes under rainfed or irrigated conditions, during the dry and rainy seasons, on herbage, leaf, and stem dry matter (DM) accumulation rates, nutritive value, and carbohydrate and protein fractionation. Treatments were tall (Iri 381 and Elefante B) or dwarf (Mott and Taiwan A-146 2.37) genotypes under rainfed or irrigated conditions. Taiwan A-146 2.37 (146 kg DM ha per day) showed similar herbage accumulation rate (HAR) to tall genotypes ...
Tópico(s): Pasture and Agricultural Systems
2021 - Multidisciplinary Digital Publishing Institute | Animals

Jordânia Kely Barbosa da Silva, Márcio Vieira da Cunha, Mércia Virgínia Ferreira dos Santos, André Luíz Rodrigues Magãlhaes, Alexandre Carneiro Leão de Mello, José Ricardo Coelho da Silva, Clóves Isaack da Rocha Souza, Adriana Lima de Carvalho, Evaristo Jorge Oliveira de Souza,
Tópico(s): Bioenergy crop production and management
2021 - Springer Science+Business Media | Tropical Animal Health and Production

Nalígia Gomes de Miranda e Silva, M. A. Lira, Mércia Virgínia Ferreira dos Santos, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, Maria da Conceição Silva,
Objetivou-se avaliar a relação entre as características morfológicas e produtivas de clones de palma-forrageira para identificação daqueles que contribuem diretamente na produção. Foram avaliados 50 clones de palma-forrageira estabelecidos no palmal há cinco anos e submetidos ao primeiro corte dois anos antes da avaliação. Foram avaliadas as características da planta e do cladódio, e os dados foram analisados pela estatística descritiva, correlação de Pearson e pela análise de trilha das variáveis- ...
Tópico(s): Agricultural pest management studies
2010 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Valéria X. O. Apolinário, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, João Vendramini, M. A. Lira, Mércia Virgínia Ferreira dos Santos, James P. Muir,
Litter decomposition is an important pathway of nutrient return on grazed pastures and it may be affected by management practices. The objective of this study was to evaluate the effects of stocking rate (2, 3.9, and 5.8 AU ha −1 ; 1 AU = 450 kg animal live weight) and N fertilization level (0, 150, and 300 kg N ha −1 yr −1 ) on signalgrass ( Brachiaria decumbens Stapf.) litter decomposition. Signalgrass litter was placed in nylon bags and incubated for 0, 4, 8, 16, 32, 64, 128, and 256 d during 2009 and 2010. ...
Tópico(s): Agroforestry and silvopastoral systems
2014 - Wiley | Agronomy Journal

Rerisson José Cipriano dos Santos, M. A. Lira, Adriana Guim, Mércia Virgínia Ferreira dos Santos, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello,
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, ...
Tópico(s): Agroforestry and silvopastoral systems
2013 - UNIVERSIDADE DE SÃO PAULO | Scientia Agricola

Valéria X. O. Apolinário, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, João Vendramini, M. A. Lira, Mércia Virgínia Ferreira dos Santos, James P. Muir,
Increasing pressure on land used for animal production demands more efficient production systems. Soil nutrients required for plant growth are usually the limiting factor in pasture productivity in the tropics. Thus, understanding nutrient cycling in grasslands is crucial to maintaining pasture sustainability where litter deposition and decomposition are important components of the nutrient cycle. This research evaluated the effects of stocking rate [SR; 2.0, 3.9, and 5.8 animal units (AU) ha –1 ; 1 ...
Tópico(s): Soil Carbon and Nitrogen Dynamics
2013 - Wiley | Agronomy Journal

Karina Rodrigues de Miranda, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, Maria da Conceição Silva, Mércia Virgínia Ferreira dos Santos, Djalma Cordeiro dos Santos,
ABSTRACT: The objective of this study was to evaluate the productive potential and mineral composition of the forage cactus IPA-Sertânia (Nopalea cochenillifera Salm Dyck). This species was analyzed both in monoculture and intercropped with leucaena [Leucaena leucocephala (Lam.) De Wit.] and gliricidia [Gliricidia sepium (Jacq. Steud.], and was assessed with different sources of manure (cattle, sheep, goat, and broiler litter) serving as fertilizer. The experiment was conducted at the Experimental Station ...
Tópico(s): Growth and nutrition in plants
2019 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Ciência Rural

Márcio Vieira da Cunha, M. A. Lira, Mércia Virgínia Ferreira dos Santos, Erinaldo Viana de Freitas, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, Kalina Gerciane Rodovalho Martins,
The objectives in this work were to study the association between the morphological and productive characteristics in Pennisetum sp. clones, and to identify the morphological characteristics responsible for the productivity in Pennisetum cp. clones. The canonical correlations were evaluated and the path analysis was made from the simple genotypic correlation matrix between the morphological and productive characteristics of eight Pennisetum sp. clones (Taiwan A-146 2.37, Taiwan A-146 2.27, Taiwan- ...
Tópico(s): Turfgrass Adaptation and Management
2011 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Vicente Imbroisi Teixeira, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, M. A. Lira, Felipe Martins Saraiva, Mércia Virgínia Ferreira dos Santos, M. A. Lira,
ABSTRACT Nutrients from fecal return may improve herbage growth and chemical composition, but herbage rejection may occur around dung pads. Rejected herbage increases in maturity and might be rejected in future grazing cycles. The aim of this study was to determine the influence of dung pad on soil and herbage characteristics of signalgrass [ Urochloa decumbens (Stapf) R. D. Webster (syn. Brachiaria decumbens Stapf.)] pastures managed under three stocking rates (1.9, 3.2, and 4.2 animal units (AUs) ha − ...
Tópico(s): Agroforestry and silvopastoral systems
2011 - Wiley | Crop Science

Mércia Virgínia Ferreira dos Santos, Erinaldo Viana de Freitas, M. A. Lira, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, J. N. Tabosa, Iderval Farias,
The objective of this research was to select elephantgrass clones for grazing conditions. A randomized complete block design was used, with 16 treatments and four replications. Each plot had a total area of 25m2, with the presence of animals. The following parameters were determined: leaf blade accumulation rate (LBAR) above 40cm height and total, stem accumulation rate (SAR), total forage accumulation rate (TFAR), dry matter concentration (%DM), crude protein concentration (%CP) and, neutral detergent ...
Tópico(s): Agricultural and Food Sciences
2004 - Editora da Universidade Estadual de Maringá (Eduem) | Acta Scientiarum Animal Sciences

Alexandre Carneiro Leão de Mello, M. A. Lira, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Erinaldo Viana de Freitas,
O estudo visou caracterizar uma coleção de 71 clones de capim-elefante e selecionar os mais promissores para serem testados sob pastejo. A caracterização foi realizada na Estação Experimental do Cedro/IPA, no município de Vitória de Sto. Antão/PE, nas estações chuvosa e seca. Cada clone foi representado por parcelas não repetidas de 10 m². Segundo análise de correlação linear, os clones mais produtivos em relação à MS, também apresentaram maiores alturas de planta e de meristemas apicais, diâmetros ...
Tópico(s): Forest ecology and management
2002 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Suellen Brandão de Miranda Costa, Alexandre Carneiro Leão de Mello, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha, Janerson José Coêlho,
In Silvopastoral Systems (SPS) the dynamics and complexity of the combination between grasses and legume trees can significantly impact forage intake and digestibility, affecting livestock performance. This research was composed of two parallel studies. The first one consisted of a field trial assessing three grazing systems: signalgrass (Urochloa decumbens Stapf.) monoculture, and two SPS, one composed of signalgrass + gliricidia [Gliricidia sepium (Jacq.) Kunth.], and another by signalgrass + mimosa (Mimosa ...
Tópico(s): Rabbits: Nutrition, Reproduction, Health
2021 - Elsevier BV | Livestock Science

Daniel Fernando Ydoyaga Santana, M. A. Lira, Mércia Virgínia Ferreira dos Santos, Marcelo de Andrade Ferreira, Djalma Cordeiro dos Santos, Alexandre Carneiro Leão de Mello, José Carlos Batista Dubeux, Gherman Garcia Leal de Araújo,
Com os objetivos de estimar o consumo de matéria seca e avaliar a variação do peso vivo de novilhas, conduziu-se um experimento no período entre março e julho de 2003, com quatro estratégias de suplementação: sem suplementação (controle); torta de algodão (1 kg); palma-forrageira (10 kg); e de palma (5,0 kg) + torta de algodão (0,5 kg). O fornecimento de suplemento não influenciou o consumo de matéria seca (MS) do pasto nativo, no entanto afetou o consumo de MS total. O consumo de matéria seca total diferiu ...
Tópico(s): Effects of Environmental Stressors on Livestock
2010 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Ana María Herrera-Angulo, Alexandre Carneiro Leão de Mello, Valéria Xavier de Oliveira Apolinário, José Carlos Batista Dubeux, Valdson José da Silva, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha,
Tópico(s): Agronomic Practices and Intercropping Systems
2020 - Springer Science+Business Media | Agroforestry Systems

Mércia Virgínia Ferreira dos Santos, M. A. Lira, José Carlos Batista Dubeux, Adriana Guim, Alexandre Carneiro Leão de Mello, Márcio Vieira da Cunha,
Caatinga is the most important biome for the livestock in the Brazilian semi-arid region. This review paper aimed to present information on different forage aspects of caatinga vegetation for ruminant feeding. Caatinga vegetation is formed mainly by shrubs and small trees, usually presenting thorns, deciduous leaves, and leaf abscission occurring frequently at the onset of the dry season. Additional components of the botanical composition in this biome includes the families cactaceae, bromeliaceae, ...
Tópico(s): Environmental and biological studies
2010 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Alexandre Carneiro Leão de Mello, M. A. Lira, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Rinaldo Luíz Caraciolo Ferreira, Márcio Vieira da Cunha,
Objetivou-se com este trabalho avaliar a influência da relação folha/colmo (F/C) na degradabilidade in situ da MS (DISMS) de clones de capim-elefante. Foram estudados dois grupos de clones de capim-elefante: GRUPO I - Cameroon, Mercker México, Três Rios, Elefante de Pinda e Guaçu/IZ, de alta relação F/C; e GRUPO II - CE 08 A.D., Taiwan A-25, Goiano, CE 03 A.D. e Merc., de baixa relação F/C. Amostras pré-secas e moídas da planta inteira, colhidas aos 60 dias de crescimento no período seco, foram incubadas ...
Tópico(s): Soil Management and Crop Yield
2006 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Felipe Martins Saraiva, José Carlos Batista Dubeux, M. A. Lira, Alexandre Carneiro Leão de Mello, Mércia Virgínia Ferreira dos Santos, Felipe de Araújo Cabral, Vicente Imbroisi Teixeira,
Grasslands may act as a carbon (C) sink or C source depending on how they are managed. Soil C stocks, root biomass, root length, root length density and soil organic C concentrations were assessed on pastures of elephant grass ( Pennisetum purpureum ) managed under different post-grazing stubble heights and signal grass ( Brachiaria decumbens ) managed under different stocking rates. Soil samples were collected in 20-cm layers down to 1-m soil depth. Neither stubble height nor stocking rate had any significant ...
Tópico(s): Rice Cultivation and Yield Improvement
2014 - International Center for Tropical Agriculture | Tropical Grasslands - Forrajes Tropicales
José Carlos Batista Dubeux, Myrele Vieira Santos, Alexandre Carneiro Leão de Mello, Márcio Vieira da Cunha, Marcelo de Andrade Ferreira, D.C. Santos, Mário de Andrade Lira, M. da C. Silva,
Tópico(s): Botanical Research and Applications
2015 - International Society for Horticultural Science | Acta Horticulturae

Osniel Faria de Oliveira, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha, José Carlos Batista Dubeux, James P. Muir, Alexandre Carneiro Leão de Mello, M. A. Lira, Gustavo Ferraz Nogueira Pinheiro de Barros,
Sheep dietary selection from species-diverse Caatinga rangeland of semi-arid northeastern Brazil has not been documented. This study examined the botanical composition of the available forage and diets of Dorper x Saint Ines ewes on thinned Caatinga over-seeded with Cenchrus ciliaris and Urochloa mosambicensis. Sixty-three species from 23 families, dominated by shrubs and short trees of low forage nutritive value, were identified in the vegetation. The botanical composition revealed, on average, ...
Tópico(s): Genetic and phenotypic traits in livestock
2016 - International Center for Tropical Agriculture | Tropical Grasslands - Forrajes Tropicales

Daniel Fernando Ydoyaga Santana, M. A. Lira, Mércia Virgínia Ferreira dos Santos, Marcelo de Andrade Ferreira, Maria José de Araújo Silva, Kleyton Alcantara Marques, Alexandre Carneiro Leão de Mello, Djalma Cordeiro dos Santos,
Um experimento foi conduzido para caracterizar uma caatinga manipulada e estimar a composição botânica e qualidade da dieta de novilhos fistulados. O experimento foi conduzido no período chuvoso, entre março e julho de 2003. A caatinga foi pastejada por 24 novilhas das raças Guzerá e Girolando e dois novilhos esôfago-fistulados. Na caatinga, foram identificados 24 famílias, 38 gêneros e 41 espécies nos dois estratos estudados (dessas, dez espécies foram encontradas na dieta dos animais). As massas ...
Tópico(s): Moringa oleifera research and applications
2011 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Ana María Herrera-Angulo, Alexandre Carneiro Leão de Mello, Valéria Xavier de Oliveira Apolinário, José Carlos Batista Dubeux, Márcio Vieira da Cunha, Mércia Virgínia Ferreira dos Santos,
Tópico(s): Soil Management and Crop Yield
2021 - Springer Science+Business Media | Agroforestry Systems

Alexandre Carneiro Leão de Mello, Suellen B.M. Costa, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Valéria X. O. Apolinário, Fernando Tenório Filho, Marcelo Santana Meireles, Camilla Gomes Pereira,
Grasslands are the major source of feed for ruminants (Zanine 2005). Seasonality of production, however, is a constraint in forage-based systems. Silvopastoral systems combine different components (animals, trees and forages) into an integrated system and may improve forage distribution across seasons. Resource use is usually more efficient both spatially and temporally, increasing land use efficiency (Nair 1993). Tree legumes present potential for silvopastoral systems because they can fix N from ...
Tópico(s): Agriculture and Rural Development Research
2014 - International Center for Tropical Agriculture | Tropical Grasslands - Forrajes Tropicales

Diego Loiola Dourado, José Carlos Batista Dubeux, Alexandre Carneiro Leão de Mello, Mércia Virgínia Ferreira dos Santos, M. A. Lira, Erinaldo Viana de Freitas, Valéria Xavier de Oliveira Apolinário, Erick R. S. Santos,
The objective was to evaluate the effect of three stocking rates (2, 3.9, and 5.8 animal units ha−1) and three fertilization levels (0, 150, and 300 kg N ha−1 yr−1) on herbage mass and nutritive value of elephantgrass (Pennisetum purpureum Schum.) cv. IRI-381. The experiment was conducted from May to August of 2009 and 2010 in Itambé, PE, Brazil, during the rainy season. Treatments were allocated in a split-plot arrangement in a completely randomized block design. The variables measured included leaf ...
Tópico(s): Ruminant Nutrition and Digestive Physiology
2019 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia

Bruno Leal Viana, Alexandre Carneiro Leão de Mello, Adriana Guim, M. A. Lira, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha,
Abstract: The objective of this work was to characterize morphologically elephant grass (Pennisetum purpureum) genotypes and to estimate their proportions of leaf blade tissues under grazing. Two tall varieties (Elephant B and IRI-381) and three short ones (Mott, Taiwan A-146 2.37, and Taiwan A-146 2.114) were evaluated under intermittent sheep grazing as to the following morphological characteristics: plant height, internode length, and leaf blade/culm ratio. Moreover, the proportions of the following ...
Tópico(s): Bioenergy crop production and management
2018 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira

Bruno Leal Viana, Alexandre Carneiro Leão de Mello, M. A. Lira, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha, Geane Dias Gonçalves Ferreira,
O objetivo deste trabalho foi estimar os coeficientes de repetibilidade, de determinação (R²) e o número mínimo de medições necessárias para predizer o valor real de variáveis morfofisiológicas e produtivas, bem como as respostas do capim-elefante de porte baixo ao pastejo com ovinos. O experimento foi realizadoem blocos ao acaso, com cinco tratamentos - Taiwan A-146 2.27, Taiwan A-146 2.37, Taiwan A-146 2.114, Merker México MX 6.31 e Mott - e quatro repetições, ao longo de cinco ciclos de pastejo entre ...
Tópico(s): Genetic and phenotypic traits in livestock
2009 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira

Izabela A. Gomes da Silva, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Alexandre Carneiro Leão de Mello, Márcio Vieira da Cunha, Valéria X. O. Apolinário, Erinaldo Viana de Freitas,
Understanding ecological interactions between the arboreal and the herbaceous components is key to get the full benefits from silvopastoral systems. The objective of this 2-yr research was to evaluate productivity and nutritive value of signalgrass (Urochloa decumbens (Stapf.) R. Webster) subjected to shading from the tree legumes Gliricidia (Gliricidia sepium (Jacq.) Steud) or Mimosa (Mimosa caesalpiniifolia Benth.) under different tree canopy management. Trees were planted in double rows and were either ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2021 - Multidisciplinary Digital Publishing Institute | Agronomy

Bruno Leal Viana, Alexandre Carneiro Leão de Mello, M. A. Lira, Adriana Guim, José Carlos Batista Dubeux, Mércia Virgínia Ferreira dos Santos, Márcio Vieira da Cunha,
ABSTRACT Adaptability is the capacity of a genotype to respond favorably to changes in the environment, while stability is the capacity to have highly predictable performance in different environmental conditions. In this study, the stability and adaptability of eight Pennisetum spp. clones were assessed. Genotypes analyzed in this research included five dwarf elephantgrass ( Pennisetum purpureum Schumach.) cultivars (Taiwan 2.27, Taiwan 2.37, Taiwan 2.114, Merker México 6.31, and Mott), two tall elephantgrass ...
Tópico(s): Bioenergy crop production and management
2015 - Wiley | Crop Science