Luis Ramírez-Avilés
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View article: Factores que intervienen en la adopción de los sistemas silvopastoriles en el estado de Yucatán, México
Factores que intervienen en la adopción de los sistemas silvopastoriles en el estado de Yucatán, México Open
Desde hace décadas la ganadería extensiva se caracteriza por su baja productividad, y un gran impacto ambiental. Por lo que diversas instituciones de investigación, así como organizaciones no-gubernamentales y dependencias de gobierno plan…
View article: Effect of Brosimum alicastrum Foliage on Intake, Kinetics of Fermentation and Passage and Microbial N Supply in Sheep Fed Megathyrsus maximus Hay
Effect of Brosimum alicastrum Foliage on Intake, Kinetics of Fermentation and Passage and Microbial N Supply in Sheep Fed Megathyrsus maximus Hay Open
An experiment was carried out to assess the effect of the incorporation of sun-dried foliage of Brosimum alicastrum into rations based on hay of Megathyrsus maximus on intake, rumen fermentation, kinetics of passage, microbial nitrogen sup…
View article: Productivity and Nutritional Quality of Nitrogen-Fixing and Non-Fixing Shrub Species for Ruminant Production
Productivity and Nutritional Quality of Nitrogen-Fixing and Non-Fixing Shrub Species for Ruminant Production Open
Fodder shrubs are important dry season feed sources for livestock in semi-arid environments. It has been proposed that a mixture of leguminous with non-leguminous shrubs may increase rates of N cycling and improve biomass and fodder qualit…
View article: Decomposition and Nitrogen Release Rates of Foliar Litter from Single and Mixed Agroforestry Species under Field Conditions
Decomposition and Nitrogen Release Rates of Foliar Litter from Single and Mixed Agroforestry Species under Field Conditions Open
Decomposition and N release pattern from the leaves of three shrubs species were studied under field conditions. Leaves of Leucaena leucocephala (Lam.), Guazuma ulmifolia (Lam.) and Moringa oleifera (Lam.) and two mixtures, Leucaena + Mori…
View article: Productivity, Morphology and Chemical Composition of Brachiaria spp. Ecotypes, under Two Solar Illumination Intensities, in Yucatan, Mexico
Productivity, Morphology and Chemical Composition of Brachiaria spp. Ecotypes, under Two Solar Illumination Intensities, in Yucatan, Mexico Open
There are mixed reports about the advantages and disadvantages of the presence of shade produced by trees over the understory-growing grasses; thus, it is urgent to test grass species and cultivars with potential to develop in shaded condi…
View article: Kinetics of Phosphorus Uptake through Roots of Habanero Pepper (Capsicum chinense Jacq. cv. Mayapán)
Kinetics of Phosphorus Uptake through Roots of Habanero Pepper (Capsicum chinense Jacq. cv. Mayapán) Open
The application of enzymatic kinetics theory on the nutrition of horticultural species is scarce. Imax and Km describe the kinetics of nutrient absorption by the plant. Imax and Km are necessary to predict phosphorus (P) uptake from soil u…
View article: EVALUATION OF THE SUSTAINABLE PERFORMANCE OF NATIVE AND INTENSIVE SILVOPASTORAL SYSTEMS IN THE MEXICAN TROPICS USING THE MESMIS FRAMEWORK
EVALUATION OF THE SUSTAINABLE PERFORMANCE OF NATIVE AND INTENSIVE SILVOPASTORAL SYSTEMS IN THE MEXICAN TROPICS USING THE MESMIS FRAMEWORK Open
Background. It is agreed that there is a need to work on sustainable extensive livestock production systems. Silvopastoral systems are an alternative for efficient and sustainable grazing systems to increase the provision …
View article: Effect of Chitosan and Naringin on Enteric Methane Emissions in Crossbred Heifers Fed Tropical Grass
Effect of Chitosan and Naringin on Enteric Methane Emissions in Crossbred Heifers Fed Tropical Grass Open
In order to meet consumer needs, the livestock industry is increasingly seeking natural feed additives with the ability to improve the efficiency of nutrient utilization, alternatives to antibiotics, and mitigate methane emissions in rumin…
View article: Increase in Milk Yield from Cows through Improvement of Forage Production Using the N2-Fixing Legume Leucaena leucocephala in a Silvopastoral System
Increase in Milk Yield from Cows through Improvement of Forage Production Using the N2-Fixing Legume Leucaena leucocephala in a Silvopastoral System Open
The objective was to evaluate milk production, N2-fixation and N transfer, forage yield and composition (under two cutting intervals) in a silvopastoral system (SPS) with Leucaena leucocephala-Megathyrsus maximus and M. maximus-monoculture…
View article: Review: Strategies for enteric methane mitigation in cattle fed tropical forages
Review: Strategies for enteric methane mitigation in cattle fed tropical forages Open
Methane (CH4) is a greenhouse gas (GHG) produced and released by eructation to the atmosphere in large volumes by ruminants. Enteric CH4 contributes significantly to global GHG emissions arising from animal agriculture. It has been contend…
View article: Effect of Defoliation Frequency on Forage Yield from Intensive Silvopastoral Systems Compared to a Monoculture Grassland
Effect of Defoliation Frequency on Forage Yield from Intensive Silvopastoral Systems Compared to a Monoculture Grassland Open
Livestock production in the tropical regions of the world faces serious constraints as a result of climate change. Monoculture based pastures require the use of large amounts of nitrogen fertilizers to sustain production throughout the yea…
View article: Comportamiento productivo e ingestivo de ovinos en crecimiento en sistemas silvopastoriles y de engorda en confinamiento
Comportamiento productivo e ingestivo de ovinos en crecimiento en sistemas silvopastoriles y de engorda en confinamiento Open
El objetivo fue comparar los parámetros de comportamiento productivo e ingestivo de ovinos alimentados en sistemas silvopastoriles y confinamiento. Se evaluaron los consumos de materia seca (CMS), de materia orgánica (CMO), de proteína cru…
View article: <i>Leucaena leucocephala</i> feeding systems for cattle production in Mexico
<i>Leucaena leucocephala</i> feeding systems for cattle production in Mexico Open
Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.The impacts of leucaena (Leucaena leucocephala) feeding systems on cattle production, environmental services and animal we…
View article: Shifts in tree allometry in a tropical dry forest: implications for above-ground biomass estimation
Shifts in tree allometry in a tropical dry forest: implications for above-ground biomass estimation Open
Background: Accurate estimations of aboveground biomass (AGB) based on allometric models are needed to implement climate-change mitigation strategies. However, allometry can change with tree size.Questions: Does allometry in a tropical dry…
View article: Establishment and management of leucaena in Latin America
Establishment and management of leucaena in Latin America Open
Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.Leucaena leucocephala (leucaena) is native to Mexico and Central America and is currently naturalized in the majority of L…
View article: MILK PRODUCTION, GRAZING BEHAVIOUR AND BIOMASS QUALITY IN NATIVE TROPICAL PASTURES GRAZED TO DIFFERENT STOCKING RATE DURING TWO YEARS
MILK PRODUCTION, GRAZING BEHAVIOUR AND BIOMASS QUALITY IN NATIVE TROPICAL PASTURES GRAZED TO DIFFERENT STOCKING RATE DURING TWO YEARS Open
The objective of this study was to determine the effect of stocking rate (SR: 2, 3 and 4 cows/ha) upon standing dry matter variables, its quality and ingestive behavior of F1 Holstein x Zebu cows that grazed rotationally and considering th…
View article: The effect of sowing time on the growth of chia (Salvia hispanica L.): What do nonlinear mixed models tell us about it?
The effect of sowing time on the growth of chia (Salvia hispanica L.): What do nonlinear mixed models tell us about it? Open
Chia (Salvia hispanica L.) is an annual short-day plant whose growth has not been studied extensively in low-altitudes and at temperatures outside of its optimal range. The objective of this study was to describe the growth dynamics of a c…
View article: The Impact of Veterinary Medicine and Animal Husbandry on the Biophysical Characteristics of Soils in Neotropical Agroecosystems
The Impact of Veterinary Medicine and Animal Husbandry on the Biophysical Characteristics of Soils in Neotropical Agroecosystems Open
The neotropical agroecosystems are important areas in the global scene in terms of livestock production. Therefore, a good conservation of their soils is crucial in order to both guarantee food safety and reduce the impact of land degradat…
View article: Evaluar los enemigos naturales de Leucaena Psyllid y Onion Thrips en los procesos de cosecha en diferentes genotipos de Leucaena
Evaluar los enemigos naturales de Leucaena Psyllid y Onion Thrips en los procesos de cosecha en diferentes genotipos de Leucaena Open
El estudio se llevó a cabo en 2013 y 2014, en Xmatkuil, Mérida, Yucatán, México a la encuesta enemigos naturales y sus efectos sobre la dinámica poblacional de Leucaena leucocephala (Lam.) de plagas Wit: Leucaena Psílidos, Heteropsyl…
View article: Efecto de la edad de corte y la época del año sobre el rendimiento y calidad de<i>Brachiaria brizantha</i>(A. Rich.) Staff en Yucatán, México
Efecto de la edad de corte y la época del año sobre el rendimiento y calidad de<i>Brachiaria brizantha</i>(A. Rich.) Staff en Yucatán, México Open
The present study was aimed to evaluate the effect of eight cutting intervals (i.e. 1, 2, 3, 4, 5, 6, 7 and 8 weeks) and three seasons (i.e. dry, rainy and late-rainy seasons) on Brachiaria brizantha growth rate, forage yield and chemical …
View article: Evaluación de ecuaciones alométricas de biomasa epigea en una selva mediana subcaducifolia de Yucatán
Evaluación de ecuaciones alométricas de biomasa epigea en una selva mediana subcaducifolia de Yucatán Open
Los objetivos del estudio fueron elaborar y cotejar ecuaciones alométricas para estimar la biomasa epigea (BE) en una selva mediana subcaducifolia del ejido San Agustín, Yucatán, México, y compararlas con ecuaciones existentes. Se seleccio…
View article: Evaluation of allometric equations of aboveground biomass in a semideciduous tropical forest of Yucatan.
Evaluation of allometric equations of aboveground biomass in a semideciduous tropical forest of Yucatan. Open
View article: Servicios ambientales de los sistemas agroforestales tropicales
Servicios ambientales de los sistemas agroforestales tropicales Open
El propósito de esta revisión es discutir el papel de los sistemas agroforestales en la prestación de servicios ambientales, incluyendo producción agrícola más diversificada y sostenible, aumento de reservas de carbono, conservación de la …
View article: Composición química y rendimiento de forraje de Leucaena leucocephala, Guazuma ulmifolia y Moringa oleifera asociadas y en monocultivo en Yucatán, México
Composición química y rendimiento de forraje de Leucaena leucocephala, Guazuma ulmifolia y Moringa oleifera asociadas y en monocultivo en Yucatán, México Open
En el trópico la producción ganadera es limitada por la escasez y la mala calidad de forraje durante la estación seca. Se evaluó la composición química y el rendimiento de forraje de Leucaena leucocephala, Guazuma ulmifolia y Moringa oleif…
View article: Live fences reduce the diurnal and seasonal fluctuations of soil CO2 emissions in livestock systems
Live fences reduce the diurnal and seasonal fluctuations of soil CO2 emissions in livestock systems Open