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| Registros recuperados: 12 | |
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| ACERO-CAMELO,Amanda; MOLINA,Esteban; PARRA-CORONADO,Alfonso; FISCHER,Gerhard; CARULLA-FORNAGUERA,Juan Evangelista. |
| ABSTRACT In order to estimate the base temperature (Bt) of growth through the appearance of leaves and calculate the phyllochron for kikuyu grass, three plots were established on three farms in the Provincia of Ubaté (Cundinamarca, Colombia) located at different altitudes (2560, 2640, 3143 m. a. s. l.). Measurements were made in four cycles in a period of eight months. The Bt was estimated by the least coefficient of variation method using a second order regression model and the model obtained was validated by the cross-validation method. The Bt values for the first, second, third and fourth leafwere 4.02, 3.68, 3.93, and 3.62 °C, respectively. For the appearance of the first leaf, the kikuyu required more thermal time (TT) (97.5 accumulated growing degree... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth models; Leaf appearance rate; Pennisetum clandestinum; Tropical forage. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000200160 |
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| DIAS,KAMILA M.; SCHMITT,DANIEL; RODOLFO,GISELLE R.; DESCHAMPS,FRANCISCO C.; CAMARGO,GUILHERME N.; PEREIRA,RAPHAEL S.; SBRISSIA,ANDRÉ F.. |
| ABSTRACT The milk and meat from animals with a pasture-based diet have higher proportions of CLA and C18:3 and lower omega-6:omega-3 ratios than products from animals with diets based on corn silage and concentrate. However, most of the published studies have evaluated fatty acid profiles in temperate climate grasses and the literature with tropical grasses is scarce. Thus, the aim of this study was to evaluate the morphological and fatty acid compositions in the vertical strata of elephant grass (Pennisetum purpureum Schum.) swards subjected to grazing heights (90 or 120 cm pre-grazing heights) and levels of defoliation (50% or 70% removal of the initial pre-grazing height). There were no interactions among pre-grazing height, the level of defoliation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linolenic acid; Pennisetum purpureum Schum; Polyunsaturated fatty acid; Tropical forage. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401707 |
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| Corrêa,D.S.; Magalhães,R.T.; Siqueira,D.C.B.. |
| Ruminal degradability of dry matter, neutral detergent fiber and acid detergent fiber of cultivars Stylozanthes guianensis (Mineirão) and Stylozanthes spp. (Campo Grande) were evaluated. Two incubations in rumen-fistulated adult bovine females were undertaken. Each incubation comprised of 25 samples of 7.0 g of each cultivar and samples were collected at 0, 6, 9, 12, 24, 36, 48, 72 and 96 hours after incubation. At a 5%/hour passage rate, Stylozanthes guianensis had 75.70, 59.01 and 76.81% effective degradability for dry matter, neutral detergent fiber and acid detergent fiber, respectively, whereas Stylozanthes spp. had 68.39, 51.93 and 58.89% for the same fractions. The lag time was different (P<0.05) only for acid detergent fiber. Stylozanthes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stylos; Cattle breeding; Tropical forage; Ruminal degradability. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000401155 |
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| Benteo,Gleiciane de Lima; Verzignassi,Jaqueline Rosemeire; Fernandes,Celso Dornelas; Valle,Cacilda Borges do; Macedo,Manuel Cláudio Motta; Libório,Cláudia Barrios de; Monteiro,Lenise Castilho. |
| ABSTRACT: This study aimed to evaluate aspects of reproductive phenology, yield components and seed quality of the B4 genotype of Brachiaria brizantha in function of nitrogen doses applied at pre-flowering. The experiment was carried out at Embrapa Beef Cattle, in a randomized block design, with seeding density of 2.59kg SPV ha-1 in the first year, in free growth plants. Urea was applied at pre-flowering at doses of 0, 25, 50, 75, 100, 125 and 150kg ha-1. The reproductive cycle of the plant lasts 225 days, with late flowering. N doses influenced the following characteristics: number of fully expanded inflorescences, percentage of dry matter, dry biomass, number of spikelets per raceme, seed yield, weight of a thousand seeds, germination, germination speed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer; Tropical forage; Seed quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901566 |
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| Santos-Garcia,Melissa Oliveira; Toledo-Silva,Guilherme de; Sassaki,Rodrigo Possidonio; Ferreira,Thais Helena; Resende,Rosângela Maria Simeão; Chiari,Lucimara; Karia,Cláudio Takao; Carvalho,Marcelo Ayres; Faleiro,Fábio Gelape; Zucchi,Maria Imaculada; Souza,Anete Pereira de. |
| Stylosanthes species are important forage legumes in tropical and subtropical areas. S. macrocephala and S. capitata germplasm collections that consist of 134 and 192 accessions, respectively, are maintained at the Brazilian Agricultural Research Corporation Cerrados (Embrapa-Cerrados). Polymorphic microsatellite markers were used to assess genetic diversity and population structure with the aim to assemble a core collection. The mean values of H O and H E for S. macrocephala were 0.08 and 0.36, respectively, whereas the means for S. capitata were 0.48 and 0.50, respectively. Roger's genetic distance varied from 0 to 0.83 for S. macrocephala and from 0 to 0.85 for S. capitata. Analysis with STRUCTURE software distinguished five groups among the S.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stylosanthes; Tropical forage; Microsatellites; Genetic diversity; Core collection. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500020 |
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| COMASTRI FILHO, J. A.. |
| As pastagens nativas, base de sustentacao do rebanho bovino (3,7 milhoes de cabecas) no Pantanal Mato-Grossense, localizam-se principalmente nas partes mais baixas do mesorelevo. Como sao alagaveis durante a cheia, o gado se concentra nos cerrados, pobres em forragem. Nas cheias as pastagens de extensas planicies permanecem submersas por longo periodo. O Pantanal alto, que sofre pequenas inundacoes, e composto por quatro formacoes vegetais: cerrado, caronal, campo cerrado e campo limpo-vazante. A UEPAE de Corumba dedica especial interesse pelo cerrado, dificilmente inundavel, e pelo caronal, de preparo de solo mais barato. O cerrado pode ser de "alta", "media" e "baixa" fertilidade, proporcional ao manto vegetativo. O uso dos cordoes arenosos (cerrado) na... |
| Tipo: Folhetos |
Palavras-chave: Campo limpo; Vazante; Caronal; Native grassland; Elyonurus; Flood plain; Pasture; Tropical forage; Bovine; Alimentação; Bovino; Brachiaria; Cerrado; Fertilidade; Forrageira Tropical; Pastagem; Pastagem Nativa; Planta; Pantanal. |
| Ano: 1984 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787711 |
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| 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 |
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| Oiticica,Isabel das Neves; Fonseca,Carlos Elysio Moreira da; Souza,Vinícius Carneiro de; Silva,Aline Barros da; Lopes,Fernando César Ferraz; Morenz,Mirton José Frota. |
| ABSTRACTThe objective of this work was to evaluate the inclusion of Fabaceae Flemingia macrophylla (Willd.) Kuntze ex Merr. in the diet of lactating dairy goats arranged in a 5 × 5 Latin square. The diets were composed of 40% of concentrate and 60% of roughage, and the dietary treatments were defined by the level of Flemingia hay inclusion (0%, 8%, 16%, 24%, and 32% in the diet dry matter) replacing Cynodon dactyloncv. Tifton 85 hay. The diets were isonitrogenous, with 14% crude protein. Feed intake, nutrient digestibility, feeding behavior, and ruminal pH and ammonia nitrogen were evaluated. There was no difference in dry matter intake with the inclusion of Flemingia hay in the diet. The digestibility of dry matter, organic matter, crude protein, neutral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Feeding behavior; Leguminosae; Ruminal pH; Tropical forage. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000900335 |
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| Araujo,Leandro Coelho de; Santos,Patricia Menezes; Rodriguez,Daniel; Pezzopane,José Ricardo Macedo. |
| ABSTRACT: Climate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daylength; Degree-days; Mombaça; Tropical forage; Water deficit. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300191 |
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| Registros recuperados: 12 | |
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