Related Experiment Video
Updated: Sep 28, 2025
11:02
The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
Published on: September 7, 2015
22.3K
Tailored Nanoparticles With the Potential to Reduce Ruminant Methane Emissions.
Eric Altermann1,2,3, Kerri Reilly1, Wayne Young1,2
1AgResearch Ltd., Palmerston North, New Zealand.
Frontiers in Microbiology
|April 1, 2022
Summary
New nanoparticles inhibit methane-producing archaea in ruminants, reducing agricultural greenhouse gas emissions. This strategy also boosts beneficial rumen microbes and may enhance animal productivity.
Area of Science:
- Agricultural Science
- Environmental Science
- Microbiology
Background:
- Agricultural methane emissions from ruminants are a significant driver of climate change.
- Rumen methanogens, a type of archaea, are responsible for producing methane in the forestomach of ruminants.
- Developing effective strategies for methane mitigation in livestock is crucial for environmental sustainability.
Purpose of the Study:
- To investigate the efficacy of functionalized polyhydroxybutyrate (PHB) nanoparticles in reducing enteric methane emissions.
- To assess the impact of PHB nanoparticles functionalized with archaeal virus lytic enzyme (PeiR) on rumen methanogens.
- To evaluate the potential of this novel strategy for improving ruminant nutrition and productivity.
Main Methods:
- Functionalization of PHB nanoparticles with PeiR, an enzyme targeting rumen methanogens.
- Testing the nanoparticles in pure cultures of methanogens.
- Evaluating nanoparticle efficacy in rumen batch and continuous flow models.
- Analyzing short-chain fatty acid (SCFA) levels in the rumen environment.
Main Results:
- Functionalized PHB nanoparticles demonstrated inhibition of rumen methanogens in various experimental systems.
- Methane reduction of up to 15% was achieved over 11 days in complex rumen models.
- Evidence of biological nanoparticle fermentation within the rumen environment was observed.
- Elevated levels of essential short-chain fatty acids, beneficial for ruminant nutrition, were recorded.
Conclusions:
- Functionalized PHB nanoparticles represent a novel and promising strategy for mitigating methane emissions from ruminants.
- The approach shows potential for a dual benefit: reducing greenhouse gases and improving animal productivity.
- Further research into nanoparticle fermentation and its impact on ruminant health is warranted.
