Emerson Alexandrino

Emerson Alexandrino
Universidade Federal de Tocantins | UFT · Escola de Medicina Veterinária e Zootecnia (EMVZ)

Doutor em Zootecnia

About

74
Publications
11,662
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
770
Citations
Additional affiliations
February 2008 - present
Universidade Federal de Tocantins
Position
  • Professor
February 2008 - November 2018
Universidade Federal de Tocantins
Position
  • Research Associate
June 2004 - February 2008
Universidade Federal de Rondônia
Position
  • Research Associate

Publications

Publications (74)
Article
Full-text available
We evaluated the growth dynamics and forage production of Massai grass subjected to different cutting frequencies during the rainy season, with the aim to determine the most suitable cutting frequency to increase grass productivity. A randomized block design with four treatments (four cutting frequencies, 24, 32, 48, and 96 days) was used. The morp...
Article
Full-text available
The objective of this study was to evaluate the effect of post-grazing residual leaf blades (RLB) of different lengths on the morphogenic and structural characteristics of Urochloa brizantha ‘Piatã’ grazed upon by beef cattle. A completely randomized design was used, with three RLB lengths (2, 4, and 6 cm) and two paddocks as replicates over two gr...
Article
Full-text available
The performance and characteristics of 18 carcasses of feedlot-finished Zebu cattle were evaluated over 93 days in confinement or semi-confinement systems. In the semi-confinement system, two strategies of pasture deferral were adopted, 40 days (40DD) and 80 days (80DD). The feed of animals in confinement was composed of 24% of grass silage Urochlo...
Article
We evaluated the effects of the vitrification solution (i.e., ethylene glycol (EG) + dimethyl sulfoxide (DMSO) with or without propylene glycol (PG)) and of exposure time on the re-expansion and hatching rates of vitrified Bos indicus embryos. In vitro produced embryos (n = 1050) were divided into seven groups: control group (non-vitrified embryos)...
Article
The objective of this study was to assess the effects of bovine embryo vitrification by applying three different vitrification solutions containing ethylene glycol (EG) and dimethylsulphoxide (DMSO) at different concentrations (10, 20 or 25% each) combined with 1.0 M glucose or 1.0 M sucrose, on the in vitro hatching and expansion rates. Healthy oo...
Article
Full-text available
The objective of this work was to evaluate the performance of young Nellore bulls and of young dual-purpose dairy bulls fed proportions of 'Mulato II' grass silage (400 and 100 g kg-1), in diets with high levels of concentrate, as well as to evaluate the cost of this feed. Sixteen young Nellore bulls and 16 young dairy crossbred bulls were used, wi...
Article
Full-text available
As espécies do gênero Brachiaria desempenham papel primordial na produção de carne e leite, por viabilizar a pecuária em solos ácidos e de baixa fertilidade. O experimento foi conduzido com o objetivo de identificar os efeitos da adubação nitrogenada na Brachiaria brizantha cv. Xaraés, em duas classes de solos: Argissolo Vermelho Eutroférico e Neos...
Article
Full-text available
Assessment of carcass and meat characteristics of Nellore young bulls or dairy crossbred young bulls fed two levels of grass-Convert silage in the rations (400 and 100 g kg-1 of dry matter). Sixteen Nellore young bulls and 16 dual-purpose dairy young bulls (Holstein x Gir and Holstein x Guzerá) with average initial body weight of 378.8±13.8 kg were...
Article
Full-text available
Knowledge of the interface plant and animal in the ecosystem grasslands is of fundamental importance when it seeks to maximize production performance of the system. That sense the objective was to verify if the input time piatã-grass (30, 40 and 50cm) interferes with the quality of the forage, feeding behavior, travel patterns and use of food cattl...
Article
Full-text available
The aim of this study was to evaluate agronomic and structural traits, as well as root mass, of Panicum maximum cv. Mombasa in different conditions of animal grazing in the same pasture in a monoculture system and a Pasture-Forestry Intercropping System (intercropped with Babassu palm trees). Evaluations were performed from December 2012 to Februar...
Article
Full-text available
The present study aimed to quantify, describe and identify areas of nutrient extraction by Brachiaria brizantha cv. Marandu biomass in integrated forest-pasture systems from a Cerrado-Amazon transition region with Typic Quartzipsamment soil by using geostatistical techniques, principal components analysis and non-hierarchical fuzzy k-means clusteri...
Article
O objetivo foi quantificar, descrever e identificar zonas de extração de nutrientes pela fitomassa da Brachiaria brazantha cv. Marandu em sistemas de integração floresta-pasto em região de transição Cerrado-Amazônia sobre Neossolo Quartzarênico Órtico típico, por meio de técnicas de geoestatística, de análise de componentes principais e da lógica d...
Article
Full-text available
The objective of this study was to evaluate the preference of forage intake on pastures subjected to doses of N. The experimental design was a randomized blocks, with split plots in 5 x 3, five N rates (0, 25, 50, 75 and 100 kg ha(-1) cycle(-1)) and three instant of grazing (mass initial estimates) and 5 x 2, five N rates and two instants of grazin...
Article
Full-text available
Rumen papillae keratinization, cell glycogen and chemical composition of the meat from young bulls fed different levels of concentrate and babassu mesocarp bran Queratinização das papilas ruminais, glicogênio celular e composição química da carne de tourinhos alimentados com níveis de concentrado e farelo do mesocarpo do babaçu Abstract This study...
Article
Full-text available
O método aqui proposto, denomidado de Área Foliar – Universidade Federal do Tocantins (AFUFT) baseia-se em três medidas da folha (comprimento total, largura na base do limbo e largura no meio do limbo), decompondo-a em um triângulo e um trapézio para o calculo da AF. O AFUFT (método II) foi comparado com três métodos: método I – indireto, com uso d...
Article
Full-text available
Os sistemas de integração lavoura-pecuária surgem como alternativa ao modelo tradicional de uso do solo, o qual busca promover viabilidade técnica, ecológica e socioeconômica da área utilizada. O objetivo foi avaliar em duas épocas do ano as respostas morfogênicas e estruturais de duas cultivares de Urochloa brizantha já estabelecidas, mediante sis...
Article
Full-text available
Objective was to evaluate the influence of different grazing height on agronomic, structural and qualitative characteristics of Brachiaria brizantha cv. Piata managed under rotational stocking. We evaluated three sward heights (30, 45 and 60 cm) over two growing seasons (Middle and Final Season). We adopted the randomized complete block design with...
Article
The objective was to evaluate levels of multiple supplements supplied to beef heifers in low supply of pasture on intake and nutrients digestibility, pH and concentration of ruminal ammonia nitrogen, nitrogen balance, synthesis and microbial efficiency. Five Nellore heifers with initial body weight of 344.00 ± 21.10 kg and average initial age of 22...
Article
The objective was to evaluate levels of multiple supplement for beef heifers in restricted grazing on average daily gain (ADG), economic analysis and intakes of total dry matter (TDMI), forage dry matter (FDMI), crude protein (CPI) and total digestible nutrients (TDNI). For evaluation of performance and economic analysis, twenty Nellore heifers (32...
Article
The objective was to evaluate the performance and production costs of Nellore steers growing on Brachiaria brizantha cv. Marandu during the dry season receiving mineral supplements with partial replacement of corn by residual glycerin. 40 Nellore steers with initial body weight of 203.12 ±20.10 kg and average initial age of 12 months, distributed i...
Article
Full-text available
Avaliaram-se as características da carcaça e da carne de tourinhos Nelore alimentados com diferentes níveis de concentrado e farelo do mesocarpo do babaçu na dieta. Foram utilizados 28 tourinhos da raça Nelore, com idade inicial de 21 meses e 356,66±19,25kg de peso corporal inicial, distribuídos inteiramente ao acaso em dietas com dois níveis de co...
Article
Full-text available
Objetivou-se avaliar as características da carcaça de tourinhos alimentados em confinamento com níveis de concentrado (65 e 71%) associados ou não à inclusão de 35% de farelo do mesocarpo de babaçu (FMB) na fração concentrada da dieta. Foram utilizados 28 tourinhos, com idade inicial de 21 meses e 356,7±19,2 kg de peso corporal inicial. O delineam...
Article
Full-text available
The objective was to evaluate the carcass characteristics of feedlot bulls fed levels of concentrate (65 and 71%) with or without the inclusion of 35% of babassu mesocarp bran (BMB) in concentrate fraction of the diet. Twenty eight young bulls were used, with initial age of 21 month and 356.7 +/- 19.2 kg of initial body weight. The experimental des...
Article
Integrated crop-livestock systems are an alternative to the traditional model of land use, which seeks to promote the technical, ecological and socio-economic viability of the area used. The aim was to evaluate the morphogenetic and structural responses of two established cultivars of Urochloa brizantha at two times of the year, using conventional...
Article
Full-text available
Objective was to evaluate the influence of different grazing height on agronomic, structural and qualitative characteristics of Brachiaria brizantha cv. Piata managed under rotational stocking. We evaluated three sward heights (30, 45 and 60 cm) over two growing seasons (Middle and Final Season). We adopted the randomized complete block design with...
Article
Full-text available
The method here proposed, nominated of leaf area – Federal University of Tocantins (AFUFT) fll out these faws and bases on three measures of the leaf (total length, leaf blade base width and leaf blade middle width), decomposing it in a triangle and a trapeze for calculate of LA. AFUFT (method II) was compared with three methods: method I – indirec...
Conference Paper
Full-text available
resUMo O método aqui proposto, denomidado de Área Foliar – Universidade Federal do To-cantins (AFUFT) baseia-se em três medidas da folha (comprimento total, largura na base do limbo e largura no meio do limbo), decompondo-a em um triângulo e um trapézio para o calculo da AF. O AFUFT (método II) foi comparado com três métodos: método I – indireto, c...
Article
Full-text available
O conhecimento da variação espacial de atributos do solo pode contribuir para identificar os efeitos do uso e manejo aplicados ao solo ao longo do tempo. Neste sentido, objetivou-se estudar as características químicas de Neossolo Quartzarênico Órtico típico sob cinco diferentes tipos de uso. O experimento foi realizado em outubro de 2010, no municí...
Article
The aim of the work was to evaluate the spatial variability of canopy height, and through this, to determine ground cover of pasture kept in continuous stocking. Samples were collected in grass-HD364 (Brachiaria hybrid cv. Mulato II) on regular grids, with 121 measurements to determine canopy height and 256 to determine the soil cover. The forage d...
Article
Full-text available
Objetivou-se avaliar o desempenho bioeconomico de tourinhos alimentados com niveis de concentrado e farelo do mesocarpo de babacu (FMB). Foram utilizados 28 tourinhos Nelore com 21 meses de idade e 356,7 ± 19,2 kg de peso corporal inicial, distribuidos ao acaso em dietas que associaram dois niveis de concentrado (65 e 71%) e dois niveis de FMB no c...
Conference Paper
Abstract Text: This research aimed to evaluate the effect of levels of multiple supplements for beef heifers that were restricted grazing during the dry season on intake and digestibility of nutrients. Five Nellore heifers were used, with age and initial weights average of 20 months and 344.0 kg, respectively. The pastures were divided into five pa...
Article
The morphogenesis determines the model of plant growth, and is, among other factors, under the influence of nutrient availability. In this context, the aim of this work was to evaluate the effect of using wastewater from the dairy industry (RLL) as a supplier of nutrients in the morphogenesis of grass Mombaca. For this we studied six doses of liqui...
Article
Full-text available
Changes in the environment may influence the genotypic and phenotypic performance of animals. The aimed of the study was of the study was to analyze the genotype-environment interaction about post-weaning weights of Nellore cattle raised in the states of Maranhão (MA), Mato Grosso (MG) and Pará (PA). The study utilized data from PMGRN-ANCP, totalin...
Article
Full-text available
We evaluated carcass characteristics, weight and percentage of prepared commercial cuts of the primal pistol cut (PC) of 30 young crossbred bulls fed diets which included replacement levels (0, 25, 50, 70 and 100% of the dry matter, DM) of corn by babassu mesocarp bran (BMB). The experiment was a completely randomized design with six replicates. Sl...
Article
Full-text available
Objetivou-se avaliar quatro teores de inclusão de farelo do mesocarpo de babaçu (Orbygnya spp.) no concentrado sobre o desempenho de bovinos confinados. Foram utilizados 24 bovinos machos (12 castrados e 12 não castrados) com idade e peso corporal médio de 33 meses e 332,1±24kg, respectivamente. As dietas foram isonitrogenadas, compostas por 44% de...
Article
The objective was to evaluate four levels of inclusion of babassu mesocarp meal (Orbygnya spp.) in the concentrate on cattle feedlot performance. Twenty four animals (12 steers and 12 bulls) were used with age and body weight of 33 months and 332.1 +/- 24kg, respectively. Diets were isonitrogenous, composed of 44% of Mombasa grass silage and 56% of...
Article
Full-text available
The objective of this experiment was to evaluate the morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to doses of N (0, 125, 250, 375 and 500 kg.ha-1 N). The treatments were arranged in a completely randomized design with four replications. Morphogenetic traits and biomass accumulation of dry matter (DM).ha...
Article
Full-text available
The objective of the present study was to evaluate the feeding behavior of feedlot Nellore bulls fed two levels of concentrate (650 and 710 g/kg dry matter) with or without the inclusion of 350 g babassu mesocarp meal/kg dry matter in the concentrate. Twenty-eight animals at 18 months of initial age and 356.66±19.25 kg initial body weight were used...
Article
Full-text available
The objective of this experiment was to evaluate the structural characteristics and agronomic traits of Brachiaria brizantha cv. Xaraés under different nitrogen levels (0, 125, 250, 375 and 500 kg.ha-1 of N) grown in Campus Rondonópolis, Mato Grosso, in the period 10/12/2006 to 08/23/2007. The treatments were arranged in a randomized design with fo...
Article
Full-text available
The objective of the experiment was to evaluate the agronomic characteristics of two sorghum hybrids for silage production, AG-2005 (double purpose) and VOLUMAX (forage) cultivated with different row spacing 1; 0.75 and 0.50 m, on Orthic Quartzarenic Neosol, resulting in 140,000; 186,666 e 280,000 plants per ha, respectively. A randomized block des...
Article
Full-text available
The objective of the experiment was to evaluate the nutritive value of silages from two sorghum hybrids, AG-2005 (double purpose) and VOLUMAX (forage) cultivated with different row spacings (0.50 m; 0.75 m and 1.00 m), resulting in 140,000; 186,666 e 280,000 plants per ha, respectively. Dry matter content of AG-2005 silage was higher for 1 m row sp...
Article
Full-text available
In a grazing simulation study in 5 x 4m plots, the leaf elongation rate, the culm elongation rate, the leaf senescence rate, the tiller density/size ratio, the leaf area index, the photosynthetically active radiation interception, and the leaf blade and total herbage production and net accumulation rates were estimated in Panicum maximum cv. Mombac...
Article
Full-text available
The purpose of this study was to evaluate the performance of maize and forage grass (Brachiaria brizantha and Panicum maximum) cultivars under monocropping and intercropping systems. The experiment was carried out in randomized complete blocks, in a 3x4 + 7 factorial design, with four replications. The first factor consisted of three maize cultivar...
Article
Full-text available
Brachiaria brizantha cv. Marandu is the most explored in production of bovines in pasture. Thus was evaluated the effect of the nitrogen levels ((0, 20 e 40 mg dm-3 week-1 of N) on agronomics characteristics (dry matter-DM and morphological compounds), morphogenesis (leaf appearance rate [TApF], leaf elongation rate [TAlF] e senescence leaf rate [T...
Article
Full-text available
p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"> A pesquisa teve como objetivo avaliar o desempenho de cultivares de milho e de espécies forrageiras ( Brachiaria brizantha e Panicum maximum ), em cultivos solteiro e consorciado. O delineamento experimental...
Article
Full-text available
RESUMO. Este estudo foi desenvolvido com o objetivo de avaliar o capim-elefante cv. Cameroon em função de doses de N em diferentes solos. Foi utilizado o delineamento experimental inteiramente casualizado em fatorial 5 x 2, sendo cinco doses de nitrogênio (0, 30, 60, 90, e 150 kg de N ha -1), testadas em duas classes de solo (Argissolo Vermelho eut...
Article
The purpose of this study was to evaluate the performance of maize and forage grass (Brachiaria brizantha and Panicum maximum) cultivars under monocropping and intercropping systems. The experiment was carried out in randomized complete blocks, in a 3x4 + 7 factorial design, with four replications. The first factor consisted of three maize cultivar...
Article
The purpose of this study was to evaluate the performance of maize and forage grass (Brachiaria brizantha and Panicum maximum) cultivars under monocropping and intercropping systems. The experiment was carried out in randomized complete blocks, in a 3x4 + 7 factorial design, with four replications. The first factor consisted of three maize cultivar...
Article
Full-text available
Resumo – Este trabalho teve como objetivo avaliar as características estruturais, morfológicas e produtivas em pastos de capim-mombaça sob lotação rotacionada com três períodos de descanso, definidos conforme o número de novas folhas expandidas por perfilho: 2,5, 3,5 e 4,5 folhas. O delineamento experimental foi inteiramente casualizado com seis re...
Article
Full-text available
The objective of this work was to evaluate structural, morphological and productive traits of Panicum Maximum cv. Mombaça pasture under rotational stocking. Three rest periods defined in terms of 2.5, 3.5 and 4.5 leaves per tiller were studied. Experimental design was completely randomized with six replicates (paddocks) per treatment. Experimental...
Article
Full-text available
Objetivou-se avaliar o efeito da utilização da soja em diferentes formas físicas em suplementos múltiplos para terminação de bovinos em pastejo sobre o ganho médio diário (GMD), o ganho de peso total (GT), o rendimento de carcaça (RC), o pH e a amônia ruminal. Os tratamentos consistiram da suplementação com grão de soja moído (GSM), grão de soja in...
Article
Full-text available
It was assessed the evolution of tillering, forage biomass, leaf area index (LAI), interception of photosynthetically active radiation (IPAR), efficiency of radiation use (ERU) in Panicum maximum "cv" Mombaça during the regrowth period of the grass, in the Summer and Autumn seasons. Similarly, grass growth indices were assessed: net assimilation ra...
Article
Full-text available
It was evaluated the effect of two rest periods (RPs) on the canopy structural characteristics of paddocks of Mombaçagrass, a cultivar of Panicum maximum, under intermittent grazing; animal production was also evaluated. The RPs were defined by the time required for the expansion of 2.5 and 3.5 new leaves per tiller. Canopy traits response variable...
Article
Full-text available
It was assessed the evolution of tillering, forage biomass, leaf area index (LAI), interception of photosynthetically active radiation (IPAR), efficiency of radiation use (ERU) in Panicum maximum "cv" Mombaça during the regrowth period of the grass, in the Summer and Autumn seasons. Similarly, grass growth indices were assessed: net assimilation ra...
Article
Full-text available
Em pastagem de capim Panicum maximum cv. Mombaça, avaliou-se o efeito de dois períodos de descanso, definidos pelo tempo necessário para a expansão de 2,5 e 3,5 novas folhas/perfilho, sobre as características estruturais do dossel altura, massa de forragem verde, de folha verde ede colmo, relação folha/colmo e índice de área foliar (IAF) - e a prod...
Article
Full-text available
It was assessed the nutritive value of hand plucked forage samples collected along the grazing period and the animal performance on Mombaçagrass pasture under intermittent stocking with three rest periods (RP). The RPs were defined by the time required for the expansion of 2.5, 3.5, and 4.5 new leaves per tiller, after six days grazing period. The...
Article
Full-text available
Os fotoassimilados produzidos pelas folhas são translocados por toda a planta, podendo variar conforme a fase de desenvolvimento, inserção da folha, desfolha, entre outros fatores. A distribuição dos fotoassimilados de folhas individuais para os diversos componentes da planta de Panicum maximum cv. Mombaça foi avaliada em função do nível de inserçã...
Article
Full-text available
It was assessed the nutritive value of hand plucked forage samples collected along the grazing period and the animal performance on Mombaçagrass pasture under intermittent stocking with three rest periods (RP). The RPs were defined by the time required for the expansion of 2.5, 3.5. and 4.5 new leaves per tiller, after six days grazing period. The...
Article
Full-text available
Objetivou-se avaliar o efeito de diferentes fontes energéticas em suplementos múltiplos de auto-regulação de consumo sobre o ganho médio diário (GMD), ganho de peso total (GPT), pH e a concentração de amônia ruminal em novilhos recriados em pastejo no período das águas. Foram avaliados suplementos contendo grão de milho moído (GMM), milho desintegr...
Article
Full-text available
A taxa de aparecimento foliar (TapF), taxa de alongamento foliar (TAlF), taxa de senescência foliar (TSF), tamanho médio de folhas (TMF) e Densidade de Perfilhos (DP) da Brachiaria brizantha cv. Marandu submetida a diferentes doses de nitrogênio – (N) (0, 45, 90, 180 e 360 mg dm-3) e duas freqüências de corte (F1 = cortes a cada 14 dias e F2 = cort...
Article
Full-text available
The tissue flow and structural traits of Panicum maximum cv. Mombaça canopy were evaluated under intermittent stocking, with rest period (RP) defined in terms of the time required for the expansion of 2.5; 3.5 and 4.5 new leaves per tiller. The pa sture treatment was divided into five or six paddocks (replicates) per treatment, observing a complete...
Article
Full-text available
O crescimento do dossel do capim-Mombaça foi analisado sob lotação intermitente com três períodos de descanso (PD), tratamentos definidos em função do tempo necessário para a expansão de 2,5; 3,5 e 4,5 novas folhas por perfilho e período de pastejo de seis dias. A área experimental foi dividida em cinco ou seis piquetes por tratamento. Utilizaram-s...