Grazing Intensity
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Soil seed bank in a subtropical grassland under different grazing intensities
ABSTRACT Grazing is an important determinant for the composition and structure of grasslands; however, soil seed bank (SSB) response to grazing intensity is poorly investigated. We analyzed SSB richness and density in a subtropical grassland in southern Brazil with different forage offers (low, intermediate, high and very high), that is, contrasting grazing
Acta Bot. Bras.. Publicado em: 2020-06
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2. DIFFERENTIAL RESPONSE OF EPIPHYTIC LICHEN TAXA TO AGRICULTURAL LAND USE IN A FRAGMENTED FOREST IN CENTRAL ARGENTINA
ABSTRACT The seasonally dry subtropical forest, especially the Espinal forest in central Argentina (one of the most fragmented ecoregions), is affected by intensive agricultural activity. These activities are the main anthropogenic sources of atmospheric nitrogen compounds and their effects on lichens have been extensively studied, making them excellent ecol
CERNE. Publicado em: 2020-06
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3. VALORIZATION OF Solanum viarum DUNAL BY EXTRACTING BIOACTIVE COMPOUNDS FROM ROOTS AND FRUITS USING ULTRASOUND AND SUPERCRITICAL CO2
Abstract Solanum viarum Dunal belongs to the Solanaceae family and it is considered to be a grazing weed toxic to cattle. In this study, ultrasound-assisted extraction (UAE) and supercritical CO2 extraction (SFE-CO2) were applied to evaluate the extraction yield and chemical composition of fruits and roots matrices of Solanum viarum Dunal. A hydroalcoholic s
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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4. Milk fatty acid composition of unsupplemented dairy cows grazing on a tropical pasture
ABSTRACT This study aimed to evaluate the milk fatty acid (FA) composition of unsupplemented dairy cows grazing on elephantgrass (Pennisetum purpureum Schum. cv. Pioneiro) pastures under three grazing management strategies: pre-grazing height of 120 cm with defoliation intensities of 50 and 70% of the initial height (treatments 120/50 and 120/70) and pre-gra
R. Bras. Zootec.. Publicado em: 28/10/2019
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5. Leaf tissue flows and defoliation patterns of Alexandergrass grazed by heifers receiving energy supplement
ABSTRACT. The study was carried out to evaluate defoliation patterns and to quantify leaf tissue flows in Alexandergrass (Urochloa plantaginea (Link.) Hitch) grazed by beef heifers receiving whole rice bran in three levels of supplementation (0, 0.5 and 1 % of body weight). A rotational stocking grazing method and two area replications were utilized. The exp
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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6. Herbage intake by cattle in kikuyugrass pastures under intermittent stocking method
RESUMO Dois experimentos complementares foram conduzidos para investigar as relações entre a estrutura do dossel de pastagens de Pennisetum clandestinum (capim-quicuiu) criadas por estratégias de lotação intermitente e o consumo de forragem por bovinos. O primeiro (Exp. I) avaliou o efeito de diferentes alturas em pré-pastejo (10, 15, 20 e 25 cm) assoc
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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7. Spatial variability of soil physical-hydric attributes under bovine trampling in agreste of Pernambuco State, Brazil
ABSTRACT. Soils under pastures suffer physical modifications, in greater or lesser intensity, via the action of animal trampling. Thus, the aim was to evaluate the spatial dependence of soil physical attributes under bovine trampling. The trial was performed at Roçadinho Farm, Agreste of Pernambuco, Brazil, in a 40 x 40 m paddock that was managed with conti
Acta Sci., Agron.. Publicado em: 17/12/2018
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8. Attractants for automated emission measurement (Greenfeed®) in pasture-based systems
ABSTRACT This study aimed to evaluate the frequency and intensity of GreenFeed (GF) use by Nellore steers using different attractants in pastures of integrated systems. The attractant protein supplement and Tifton bermudagrass pelleted hay flavored with vanilla were evaluated over a period of 15 days. The pelleted hay stimulated the animals to stay longer in
R. Bras. Zootec.. Publicado em: 30/07/2018
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9. Key factors that influence for seasonal production of Guinea grass
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
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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10. Integrating the pastoral component in agricultural systems
ABSTRACT This paper aims to discuss the impact of the introduction of pastures and grazing animals in agricultural systems. For the purposes of this manuscript, we focus on within-farm integrated crop-livestock systems (ICLS), typical of Southern Brazil. These ICLS are designed to create and enhance the synergisms and emergent properties have arisen from agr
R. Bras. Zootec.. Publicado em: 26/03/2018
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11. Ionic Oxidation in Cathodic Cage of Titanium CP Grade II
Titanium oxides such as rutile and anatase, are materials that stand out for exhibiting properties that act in biomedical and photocatalytic applications, among others. It is extreme importance to idealize new techniques that produce such compounds, being indispensable the improvement of characterizations for these materials. For this purpose, titanium comer
Mat. Res.. Publicado em: 24/08/2017
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12. Soil structural quality degradation by the increase in grazing intensity in integrated crop-livestock system
ABSTRACT The intensification of soil use, as in integrated croplivestock system (ICLS), might promote soil structural degradation. A field method to evaluate the soil structural quality is the Visual Evaluation of Soil Structure (VESS). Studies on the application of this method to ICLS are few. This work aimed to evaluate the structural quality of a Dystrude
Bragantia. Publicado em: 14/08/2017