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Updated: Aug 6, 2026
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Applying Advanced In Vitro Culturing Technology to Study the Human Gut Microbiota
Published on: February 15, 2019
Redefining feed efficiency through the livestock gut microbiome
Matthew Chidozie Ogwu1, Sylvester Chibueze Izah2, Esther Ugo Alum3
1Goodnight Family Department of Sustainable Development, Appalachian State University, Boone, NC, United States.
Frontiers in Physiology
|July 23, 2026
Summary
The gastrointestinal microbiome critically influences livestock feed efficiency by mediating nutrient transformation. Reframing feed efficiency as a diet-microbiome-host interaction enhances understanding and sustainability in livestock production.
Area of Science:
- Livestock Production
- Microbiome Research
- Nutritional Science
Background:
- Feed efficiency is crucial for economic viability and environmental sustainability in livestock.
- Conventional metrics like feed conversion ratio do not fully capture nutrient transformation processes.
- The gastrointestinal microbiome's role in feed efficiency is underappreciated.
Purpose of the Study:
- To argue that the gastrointestinal microbiome is a critical mediator of feed efficiency.
- To reframe feed efficiency as an emergent property of diet-microbiome-host interactions.
- To highlight microbiome-informed strategies for improving feed efficiency and sustainability.
Main Methods:
- This study presents a perspective based on existing research and biological principles.
- It analyzes the role of rumen and intestinal microbiota in ruminants and monogastrics.
- It discusses the implications of microbiome mediation for nutrient bioavailability and host resilience.
Main Results:
- Microbial communities in ruminants and monogastrics significantly impact nutrient utilization, energy supply, and methane loss.
- Microbial mediation explains variation in digestive stability, inflammatory burden, and resilience.
- Microbiome-informed strategies can enhance nutrient conversion and reduce environmental impact.
Conclusions:
- Feed efficiency should be viewed as a complex interaction between diet, microbiome, and host.
- Recognizing the microbiome's role provides a mechanistic framework for sustainable livestock nutrition.
- This perspective has implications for breeding, management, and multi-omics research.
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