A5047053672- Ruminant Nutrition and Digestive Physiology
- Anaerobic Digestion and Biogas Production
- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Bioenergy crop production and management
- Liver Disease Diagnosis and Treatment
- Agriculture Sustainability and Environmental Impact
- Nitrogen and Sulfur Effects on Brassica
- Meat and Animal Product Quality
- Muscle metabolism and nutrition
- Gut microbiota and health
- Agricultural Productivity and Crop Improvement
- Animal Nutrition and Physiology
- Metabolism and Genetic Disorders
- Turfgrass Adaptation and Management
- Phytase and its Applications
- Food Security and Health in Diverse Populations
- Insect and Pesticide Research
- Microbial Metabolic Engineering and Bioproduction
- Effects of Environmental Stressors on Livestock
- Sunflower and Safflower Cultivation
- Plant and fungal interactions
- Gout, Hyperuricemia, Uric Acid
- Lipid metabolism and biosynthesis
- Rabbits: Nutrition, Reproduction, Health
Instituto de Investigaciones Agropecuarias
2016-2025
Inria Chile
2024
Instituto Nacional de Investigaciones Agropecuarias
2023
Agriculture and Agri-Food Canada
2011-2018
Austral University of Chile
2013
Lethbridge Research and Development Centre
2011
Michigan State University
2003-2009
University of Maryland, College Park
2007-2008
Rumen fermentation affects ruminants productivity and the environmental impact of ruminant production. The release to atmosphere methane produced in rumen is a loss energy cause climate change, profile volatile fatty acids post-absorptive metabolism host animal. shaped by intracellular intercellular flows metabolic hydrogen centered on production, interspecies transfer, incorporation dihydrogen into competing pathways. Factors that affect growth methanogens rate feed concentration rumen,...
Maximizing the flow of metabolic hydrogen ([H]) in rumen away from CH4 and towards volatile fatty acids (VFA) would increase efficiency ruminant production decrease its environmental impact. The objectives this meta-analysis were: i) To quantify shifts sinks when inhibiting ruminal methanogenesis vitro; ii) understand variation among experiments between batch continuous cultures systems is inhibited. Batch (28 experiments, N=193) (16 N=79) culture databases with at least 50% inhibition were...
Ruminant livestock are an important source of anthropogenic methane (CH4). Decreasing the emissions enteric CH4 from ruminant production is strategic to limit global temperature increase 1.5°C by 2050. Research in area mitigation has grown exponentially last 2 decades, with various strategies for abatement being investigated: intensification, dietary manipulation (including supplementation and processing concentrates lipids, management forage pastures), rumen (supplementation ionophores,...
Abstract Ruminants are important for global food security but emit the greenhouse gas methane. Rumen microorganisms break down complex carbohydrates to produce volatile fatty acids and molecular hydrogen. This hydrogen is mainly converted into methane by archaea, can also be used hydrogenotrophic acetogenic respiratory bacteria useful metabolites. A better mechanistic understanding needed on how dietary influence metabolism methanogenesis. We profiled composition, metabolic pathways,...
Background Herbivores rely on digestive tract lignocellulolytic microorganisms, including bacteria, fungi and protozoa, to derive energy carbon from plant cell wall polysaccharides. Culture independent metagenomic studies have been used reveal the genetic content of bacterial species within gut microbiomes. However, nature genes encoded by eukaryotic protozoa these environments has not explored using or metatranscriptomic approaches. Methodology/Principal Findings In this study, a approach...
A decrease in methanogenesis is expected to improve ruminant performance by allocating rumen metabolic hydrogen ([2H]) more energy-rendering fermentation pathways for the animal. However, decreases methane (CH
Methane (CH4) formed in the rumen and released to atmosphere constitutes an energy inefficiency ruminant production. Redirecting CH4 fermentation products with a nutritional value host animal could increase productivity stimulate adoption of CH4-suppressing strategies. The hypothesis this research was that inhibiting formation is associated greater productivity. primary objective meta-analysis evaluate how methanogenesis relates efficiencies milk production growth fattening. A systematic...
Aims: To examine the effects of five inhibitors methanogenesis, 2‐bromoethanesulphonate (BES), 3‐bromopropanesulphonate (BPS), lumazine, propynoic acid and ethyl 2‐butynoate, on CH4 production ruminal methanogens Methanobrevibacter ruminantium, Methanosarcina mazei Methanomicrobium mobile. Methods Results: Methanogens were grown in MS medium including 25% (v/v) clarified fluid. Methane was measured after 4 6 days incubation. ruminantium most sensitive species to BES, 2‐butynoate. least those...
Dihydrogen accumulation resulting from methanogenesis inhibition in the rumen is an energy loss and can inhibit fermentation. The objective of this analysis was to compare energetic nutritional consequences incorporating H2 into reductive acetogenesis or additional propionate production beyond acetate shift occurring along with inhibition. Stoichiometric were calculated for a simulated fermentation example. Possible are discussed. Incorporating resulted equal heat combustion output volatile...
Limiting global warming to 1.5 °C above pre-industrial levels by 2050 requires achieving net zero emissions of greenhouse gases and a strong decrease in methane (CH4) emissions. Our aim was connect the need for mitigation enteric CH4 from ruminant production basic research on biological consequences inhibiting rumen methanogenesis order better design strategies pronounced without negative impacts animal productivity or economic returns. Ruminant worldwide has challenge decreasing its while...
Decreasing enteric CH4 emissions from ruminants is important for containing global warming to 1.5 °C and avoid the worst consequences of climate change. However, objective mitigating difficult reconcile with forecasted increase in production ruminant meat milk, unless per animal kilogram product are decreased substantially. Chemical compound 3-nitrooxypropanol bromoform-containing red algae Asparagopsis currently most potent inhibitors rumen methanogenesis, but their average efficacy would...
Abstract Ruminants are essential for global food security, but these major sources of the greenhouse gas methane. Methane yield is controlled by cycling molecular hydrogen (H2), which produced during carbohydrate fermentation and consumed methanogenic, acetogenic, respiratory microorganisms. However, we lack a holistic understanding mediators pathways H2 metabolism how this varies between ruminants with different methane-emitting phenotypes. Here, used metagenomic, metatranscriptomic,...
The microbes residing in ruminant gastrointestinal tracts play a crucial role converting plant biomass to volatile fatty acids, which serve as the primary energy source for ruminants. This tract comprises foregut (rumen) and hindgut (cecum colon), differ structures functions, particularly with respect feed digestion fermentation. While rumen microbiome has been extensively studied, cecal remains much less investigated understood, especially concerning assembling microbial communities...
The horn fly is an economically important hematophagous ectoparasite of cattle. Its management relies heavily on broad-spectrum pesticides, which are harmful to the environment and have led development resistance. Therefore, alternative control methods needed. Semiochemicals involved in communication between flies their host a promising alternative. Considering that egg-laying this occurs almost exclusively fresh cattle dung, most parts its life cycle occur totally dung volatiles might play...