Rolando Barahona Rosales

Rolando Barahona Rosales
National University of Colombia | UNAL · Departamento de Producción Animal (Medellin)

BSc, MSc, PhD
Carbon footprint in livestock production systems

About

243
Publications
150,648
Reads
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2,791
Citations
Citations since 2016
87 Research Items
2269 Citations
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Introduction
Currently involved in three projects: (a) Determining main GHG emmision factors in specialized dairy operations; (b) Determining enteric fermentation methane emmisions in Leucaena and Tithonia-based silvopastoral systems; (c) Measuring changes in forage availability and quality as affected by climatic factors. This research is carried out by MSc and PhD students enrolled at my university
Additional affiliations
February 2007 - present
National University of Colombia
Position
  • Profesor Titular - Professor (Full)
Description
  • I act as professor of animal nutrition and feeding (undergraduate students) and of nutrient excretion, energy usage in agriculture and animal feeding (posgraduate). Additionally, carry out research in projects funded by different Colombian agencies
February 2007 - present
National University of Colombia
Position
  • Profesor titular - Professor (full)
Description
  • Currently teach an Animal Feeding undergraduate course and an Energy Trasactions and a Nutrient Excretion Posgraduate course
May 2002 - January 2007
Agrosavia
Position
  • Coordinator - Animal Physiology and Nutrition Program
Description
  • Acted as coordiantor of research for a group of more than 50 researchers carrying out research in animal nutrition and Physiology in the main animal agriculture regions of Colombia
Education
August 1996 - December 1999
University of Reading
Field of study
  • Agriculture
January 1993 - August 1995
Kansas State University
Field of study
  • Ruminant Nutrition
June 1989 - December 1992
Kansas State University
Field of study
  • Animal Sciences and Industry

Publications

Publications (243)
Article
Full-text available
This work has followed the protocols of the IPCC and used secondary information to calculate greenhouse gas (GHG) emissions in intensive silvopastoral systems (ISS) alone and associated with timber trees. Additionally, emissions were calculated for two baseline scenarios: degraded pastures and improved pastures in order to estimate the contribution...
Article
Full-text available
A decline in pasture productivity is often associated with a reduction in vegetative cover. We hypothesize that nitrogen (N) in urine deposited by grazing cattle on degraded pastures, with low vegetative cover, is highly susceptible to losses. Here, we quantified the magnitude of urine-based nitrous oxide (N2O) lost from soil under paired degraded...
Article
Full-text available
This paper presents a descriptive and evaluative analysis of the productive and environmental of SPSi with Leucaena leucocephala (Lam.) de Wit, emphasizing the nutritional quality, biomass production, voluntary intake, animal productivity and greenhouse gas emission aspects. For such purpose, a bibliographic review was made about the studies in the...
Chapter
Full-text available
https://www.ipcc-nggip.iges.or.jp/public/2019rf/vol4.html
Article
In Colombia, the beef production chain accounts for approximately 11.6 million cattle heads and annually produces 933 million kg of the beef carcass. There are no life cycle assessment (LCA) studies that have evaluated the environmental performance of Colombian beef systems. The present study aimed to estimate the carbon footprint (CF), non-renewab...
Article
Full-text available
Las Comunicaciones Nacionales sobre Cambio Climático (CNCC) son un mecanismo para que los países informen sus avances en mitigación y adaptación, y constituyen uno de los elementos de base para la política sobre cambio climático a escala nacional. Colombia ha emitido tres CNCC. La tercera plantea un escenario que considera las proyecciones de diver...
Article
The diversity and use of forages and grasslands for animal feeding are essential in tropical livestock systems. Seasonal changes are mainly marked by variations in precipitation patterns. Grasslands are managed as perennial crops and therefore must be resilient to tolerate both dry and rainy seasons. The integration of animal production with the ge...
Article
Las herramientas automatizadas de análisis de texto resumen grandes volúmenes de información y permiten generar, de forma eficiente, conocimiento a partir de datos desestructurados, como las opiniones. El objetivo de este trabajo fue identificar prioridades en comunidades afectadas por el conflicto armado, utilizando ejercicios participativos de 13...
Article
Full-text available
in vitro study was carried out to measure methane (CH4) production and ruminal fermentation parameters of tropical forages either commonly used and with a potential for inclusion in Colombian livestock systems. The forages evaluated wereUrochloa hybrid cv. Cayman, Leucaena leucocephala, Leucaena diversifolia, Megathyrsus maximus cv. Mombaza, Urochl...
Article
The objective of this work was to analyze the effect of the addition of condensed tannins (CT) in the efficiency of digestion, methanogenic potential and energy distribution between the fermentation products of two forages. An assay was carried out using the in vitro gas production technique in which extracts of Quebracho (Schinopsis balansae) and...
Article
Full-text available
This study evaluates the effects of the inclusion of two different Leucaena species as a source of condensed tannins based on in vitro fermentation, methane production and post-ruminal protein supply in a diet based on Urochloa hybrid cv. Cayman CIAT BR02/1752 grass. Under in vitro conditions, Leucaena leucocephala CIAT 17263 and Leucaena diversifo...
Article
Full-text available
The efficient propagation of plant species with high food potential plays a fundamental role in their adoption and use by producers. It is important, therefore, to develop economical and rapid methods for the successful establishment of more productive systems. In order to know some reproductive aspects of different outstanding genotypes of T. dive...
Article
Full-text available
Tithonia diversifolia is a shrub with excellent forage characteristics that has shown a wide genetic and phenotypic diversity. The objective of this study was to determine the biomass production and nutritional quality of seven genotypes of T. diversifolia with outstanding characteristics for ruminant nutrition, to analyze the Genotype x Environmen...
Article
Full-text available
The effect of the inclusion of Leucaena leucocephala and Tithonia diversifolia in Zebu steers receiving a diet based on improved pastures such as Brachiaria decumbens and Brachiaria hybrid cv Cayman on nitrogen (N) excretion, urinary volume and rumen microbial population was evaluated. To determine the dry matter intake and nutrient excretion, eigh...
Article
Full-text available
Latin America and Caribbean (LAC) is a developing region characterized for its importance for global food security, producing 23 and 11% of the global beef and milk production, respectively. The region's ruminant livestock sector however, is under scrutiny on environmental grounds due to its large contribution to enteric methane (CH4) emissions and...
Article
Tithonia diversifolia (Mexican sunflower) is a shrub used for animal feed that has outstanding agronomic and chemical characteristics. Its potential to modify the dynamics of fermentation and improve the supply of nutrients to ruminants has received considerable attention. This study was designed to determine the effect of different genotypes of T....
Article
Full-text available
Forage grass nutritional quality directly affects animal feed intake, productivity, and enteric methane (CH 4 ) emissions. This study evaluated the nutritional quality, in vitro enteric CH 4 emission potential, and optimization of diets based on two widely grown tropical forage grasses either alone or mixed with legumes. The grasses Urochloa hybrid...
Article
Full-text available
Pasture conditions influence the nutrients use efficiency and nitrogen (N) losses from deposited excreta. Part of the N is lost as nitrous oxide (N 2 O), a potent greenhouse gas. The objective of this study was to characterize apparent N recovery in milk of dual-purpose cattle and to quantify N 2 O emissions from the urine they deposit following gr...
Chapter
In liberal milk systems, buffalo have high weaning weights and reach harvest weight at an early age. A study was carried out to evaluate residual feed intake (RFI) as a feed efficiency selection tool and its relationship with feed intake, nutrient utilization and performance in weaned buffaloes from this system. Two performance tests were conducted...
Article
Dual-purpose cattle systems (DPS) include more than 75% of all dairy cows in Latin America and produce 40% of total milk production. Colombia has the fourth largest cattle herd in Latin America, and DPS account for 39% of the cattle population, and 58% of national milk production. Therefore, focusing on reducing the carbon footprint (CF) of DPS can...
Article
Full-text available
The purpose of this study was to determine the in vitro fermentation and methane (CH4) production in the grass Brachiaria brizantha (B) alone or when mixed with Gliricidia sepium forage (G) and/or Enterolobium cyclocarpum pods (E). Theses substrates were incubated in the following proportions: B100 (B100%), B85E15 (B85% + E15%), B85G15 (B85% + G15%...
Article
Full-text available
Methane (CH4) emissions from enteric fermentation in cattle are an important source of greenhouse gases, accounting for about 40% of all agricultural emissions. Diet quality plays a fundamental role in determining the magnitude of CH4 emissions. Specifically, the inclusion of feeds with high digestibility and nutritional value have been reported to...
Conference Paper
Full-text available
The beef production chain in Colombia accounts for approximately 15.5 million cattle heads. Cow-calf and cattle-fattening represent 40.4 and 45.2% of the Colombian beef herd respectively, and the remaining 14.4% corresponds to full-cycle systems. The present study aimed to estimate, based on a farm gate LCA approach, the carbon footprint (CF) of 25...
Article
Full-text available
There are few reports on dual-purpose cattle systems characterization in Latin America and Colombia based on large datasets. This limits our understanding of their dynamics, and the establishment of public policies and government programs to improve their productive performance, promotion and rural development. This study aimed to characterize very...
Article
Full-text available
En Colombia, la cría bovina representa el 15% del inventario ganadero, siendo un eslabón importante en la cadena de producción de carne. La carencia de estudios de caracterización limita la adecuada planificación técnica y ambiental de esta actividad. El objetivo de este estudio fue caracterizar los parámetros técnicos y ambientales de fincas de cr...
Chapter
Full-text available
This chapter provides guidance on methods to estimate emissions of methane from Enteric Fermentation in livestock, and methane and nitrous oxide emissions from Manure Management. Carbon dioxide(CO2) emissions from livestock are not estimated because annual net CO2 emissions are assumed to be zero – the CO2 photosynthesized by plants is returned to...
Article
Full-text available
In Colombia, cattle-fattening farms account for 20.7% of the Colombian cattle herd and play an important role in terms of economic and social benefits for rural communities. However, few characterization studies have been conducted on these production systems, which limit our understanding of their production dynamics and environmental impacts. Thi...
Conference Paper
Full-text available
El apropiado uso de arbustivas en sistemas silvopastoriles, tiene un papel fundamental en el mejoramiento de la productividad y sostenibilidad de la empresa pecuaria, debido a esto la identificación y evaluación de ecotipos destacados debe ser el punto de partida para incrementar la eficiencia en la utilización de los recursos forrajeros. El objeti...
Article
Full-text available
Plenary paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia. Leucaena leucocephala has played a key role in the development of sustainable cattle ranching in Latin America. This species is the backbone of the so-called Intensive Silvopastoral Systems (ISPS) that combine high-density cultivat...
Article
Full-text available
Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia. The demand for milk and dairy products globally is expected to grow in future decades, leading to an increase in the global dairy cattle population. Therefore it is important to identify production options that both improve efficie...
Poster
Full-text available
The livestock sector in the LAC region is facing different problems of: (i) low productivity (ii) soil erosion, and (iii) low profitability due to inadequate insertion to markets. To address these issues, improved pastures with environmental traits along with adequate management practices might be one of the most promising options of the livestock...
Poster
Full-text available
Carbon Footprint of 192 dairy cattle farms in Colombia by using Life Cycle Assessment Methodology.
Article
Full-text available
The production of beef and milk has a significant impact on climate change, as these activities are responsible for a large proportion of the greenhouse gases emitted in agriculture. We used the static closed chamber technique to measure the rate of CH4-C, N2O-N and CO2-C emissions from pastures (102 days) and bovine excretions (27 days) in an inte...
Poster
Full-text available
Fourth World Congress on Agroforestry----- In plant species, genetic and morphological variability are considered the basis for their adaptation and ability to respond to challenges and threats (Govindaraj et al., 2015). Tithonia diversifolia, a shrub of the family Asteraceae, is considered a forage species of great importance due to its chemical...
Article
Incorporation of foliage and pods of tropical legumes in ruminant rations is an alternative to mitigate enteric methane emissions. The objective of this research was to evaluate the effect of adding increasing levels of ground pods of Enterolobium cyclocarpum (Jacq.) Griseb. mixed with foliage of Gliricidia sepium (Jacq.) Steud. on emissions of rum...
Article
Full-text available
La estimación de la sustentabilidad en los sistemas de producción pecuaria ha ganado gran relevancia en los últimos años. El concepto de sustentabilidad incluye cuatro componentes, de los cuales, los técnicos y económicos resultan especialmente importantes en sistemas de producción vacuna de leche (SP). El objetivo de esta investigación fue caracte...
Article
In the last decades, strategies have been evaluated to reduce rumen methane (CH4) production by supplementing tropical forages rich in secondary compounds; however, most of these beneficial effects need to be validated in terms of their persistence over time. The aim of this study was to assess CH4 emissions over time in heifers fed with and withou...
Article
Full-text available
Introduction Tropical and subtropical regions of Latin America, due to their wide territorial extension with lower human population density than Asia and with an accelerated concentration of their inhabitants in the cities, enjoy less limiting agroclimatic conditions than a great part of Africa and Australia in such a way that they are called upon...
Article
Full-text available
Tithonia diversifolia has attracted attention in different fields of research beyond livestock production, including its potential for adaptation, biomass production, nutrient supply and therapeutic properties. The objective of the present review is to explore aspects of diversity, adaptation, phytochemical content and the association of other orga...
Presentation
Full-text available
The demand for milk and dairy products is expected to grow in the next years. This growth will lead to an increase in the global cattle population, therefore, it is important to identify livestock production options that at the same time improve efficiency and help reduce negative effects on the environment. The ISS has been proposed as a sustainab...
Presentation
Full-text available
Presentación en I Seminario de Ganadería Climáticamente Inteligente en zonas de bosque seco tropical. - SENA La Angostura (Huila)
Article
Full-text available
Tithonia diversifolia has attracted attention in different fields of research beyond livestock production, including its potential for adaptation, biomass production, nutrient supply and therapeutic properties. The objective of the present review is to explore aspects of diversity, adaptation, phytochemical content and the association of other orga...
Article
Full-text available
Agricultural producers grapple with low farm yields and declining ecosystem services within their landscapes. In several instances, agricultural production systems may be considered largely unsustainable in socioeconomic and ecological (resource conservation and use and impact on nature) terms. Novel technological and management options that can se...
Article
Full-text available
La adaptación de un animal al medioambiente está influenciada por varios factores, entre ellos los métodos utilizados para la reproducción, producción y sacrificio. El objetivo de este estudio fue evaluar el comportamiento individual de machos cebú en corrales presacrificio y relacionarlo con el pH de la carne. Un total de 150 novillos de la raza B...
Article
The adaptation of an animal to the environment is influenced by several factors, including the methods used for breeding, production and slaughter. The aim of this study was to evaluate the individual behavior of zebu males in pre-slaughter pens and relate it to meat pH. A total of 150 young bulls of the Brahman race, between 24 and 27 months of ag...
Conference Paper
Full-text available
Tithonia diversifolia is a shrub with great potential for animal feed thanks to its adequate nutritional quality, edaphoclimatic adaptability and high production of biomass, but it shows great differences in its agronomic performance and nutritional quality depending on the origin of the material used. The objective of the present study was to char...
Conference Paper
Full-text available
En los sistemas de pastoreo extensivo se localiza aproximadamente el 90% del inventario ganadero correspondiente a la cadena de producción de carne en Colombia. Este carácter extensivo sumado al bajo valor nutritivo de las gramíneas tropicales ha generado estancamiento en la cantidad de animales que conforman el hato nacional y bajos índices de pro...
Poster
Full-text available
Los sistemas silvopastoriles en donde se asocian gramíneas y leguminosas forrajeras son de mucha importancia debido a los beneficios que se pueden obtener con ellos, como el aumento de la productividad, y los servicios ecosistémicos que pueden prestar. Estos sistemas representan una opción válida para la intensificación sostenible de la ganadería....
Presentation
Full-text available
Presentación hecha en evento Pre-Congreso ”Simposio de Botón de Oro, Tithonia diversifolia en sistemas de producción pecuaria”
Presentation
Full-text available
Trabajo presentado en simposio pre-congreso sobre Tithonia diversifolia. IX Congreso Internacional de Sistemas Silvopastoriles (Manizales, 2017)