Grazing Intensity
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities
ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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14. Temporal profiles of vegetation indices for characterizing grazing intensity on natural grasslands in Pampa biome
ABSTRACT The Pampa biome is an important ecosystem in Brazil that is highly relevant to livestock production. The objective of this study was to analyze the potential use of vegetation indices to discriminate grazing intensities on natural grasslands in the Pampa biome. Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation In
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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15. Effects of post-grazing forage mass on a beef cattle grazing system on Tanzânia grass pastures
The objective of this study was to evaluate the effect of grazing intensity on herbage accumulation, animal performance, and total system yield on irrigated Tanzania grass pastures under rotational stocking. The experiment was conducted from October 1999 to January 2001, in a complete randomized block design with four replications. Treatments consisted of th
R. Bras. Zootec.. Publicado em: 2014-06
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16. Prevention of natural grassland invasion by Eragrostis plana Nees using ecological management practices
The objective of this research was to evaluate the effects of different types of disturbance on the ability of the natural grassland to avoid the invasion of Eragrostis plana Nees (South African lovegrass). The experiment was carried out in Dom Pedrito, Rio Grande do Sul, Brazil, in an area free of South African lovegrass, from Feb. 2004 to Apr. 2007. The tr
R. Bras. Zootec.. Publicado em: 2012-08
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17. Frequencies and intensities of defoliation in Aruana guineagrass swards: morphogenetic and structural characteristics
The objective of this study was to evaluate the morphogenetic and structural characteristics of Aruana guineagrass pastures (Panicum maximum cv. Aruana) subjected to rotational stocking by sheep. The treatments corresponded to grazing when swards reached 95 or 98% of interception of incident light (LI) until post-grazing heights of 10 and 15cm and were alloc
R. Bras. Zootec.. Publicado em: 2012-08
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18. Grazing patterns on signalgrass pasture according to location of cattle feces
This study was conducted to evaluate the defoliation patterns on B. decumbens cv. Basilisk (signalgrass) tiller as a function of influence of feces deposited naturally by cattle. The signalgrass was managed with an average height of 25 cm, under continuous stocking and variable stocking rate. Interval and intensity of defoliation, grazing efficiency and fora
Revista Brasileira de Zootecnia. Publicado em: 2012-04
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19. Productivity, utilization efficiency and sward targets for mixed pastures of marandugrass, forage peanut and tropical kudzu
This study was carried out to evaluate the productivity and utilization efficiency of a mixed marandugrass (Brachiaria brizantha cv. Marandu), forage peanut (Arachis pintoi cv. Mandobi) and tropical kudzu (Pueraria phaseoloides) pasture, rotationally stocked at four daily forage allowance levels (6.6, 10.3, 14.3 and 17.9% of live weight), in order to define
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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20. Distribuição espacial e temporal de placas de esterco e produtividade da soja em sistema de interação soja-bovinos de corte / Spatial and temporal distribuition of dung and soybean yield in integrated soybean-beef cattle system
This study was conducted at Planalto Médio region, RS, in the experimental protocol of long duration, between July 2010 and April 2011, consisting of two experiments. In Experiment 1 it was realized samples of dung, in intervals of 20 days in each treatment of sward height (10, 20, 30 and 40 cm). Six evaluations were amounted from that period have been mark
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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21. Morfogênese, acúmulo de forragem e teores de nutrientes de Panicum maximum cv. Tanzânia submetido a diferentes severidades de desfolhação e fertilidades contrastantes / Morphogenesis, forage net accumulation and nutritional status of Panicum maximum cv Tanzânia under contrasting fertilization rates and grazing intensities
Nitrogen is the most important nutrient regulating pasture production. Response to N fertilization depends on residual leaf area index and other nutrient availability. The aim of this study was to evaluate morphogenetic and structural characteristics, grazing interval, forage yield and nutritional status of Tanzania guinea grass under contrasting defoliation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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22. Morphogenesis of dwarf elephant grass clones in response to intensity and frequency of defoliation in dry and rainy seasons
The aim of this study was to evaluate during the dry and rainy seasons the morphogenesis traits of two clones of dwarf elephant grass under different management strategies. The study was conducted in a factorial 2 × 2 × 3 design, using two clones, one green and one purple, two residual heights, 25 and 45 cm, and three frequencies of defoliation according t
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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23. Comportamento de gramíneas forrageiras sob condições de pastejo intensivo por bovinos na região semi-árida do Nordeste do Brasil.
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Petrolina : EMBRAPA-CPATSA. Publicado em: 2011
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24. Performance of nellore cattle under two grazing management systems.
The objective of this study was to evaluate the effects of grazing intensification on birth weight (BW), weaning weight (WW, standartized to 205 days), average daily gain weight (BW), weight (ADG), and gestation length (GL) of calves, cow weight at at weaning (CCW), and BW/CWC (BWR), WW/CWC (WWRC) and WW/CWW (WWRW) ratios. One hundred and sixty eight nellore
INTERNATIONAL GRASSLAND CONGRESS. Publicado em: 2011