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Pilot Study of the Effects of Polyphenols from Chestnut Involucre on Methane Production, Volatile Fatty Acids, and
Yichong Wang1, Sijiong Yu1, Yang Li1
1College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China.
Animals : an Open Access Journal From MDPI
|January 12, 2021
Summary
Polyphenols from Chestnut (PICB) improve rumen fermentation and reduce methane emissions in cattle. A 0.2% dose of PICB shows optimal results for feed efficiency and greenhouse gas reduction.
Area of Science:
- Agricultural Science
- Animal Nutrition
- Environmental Science
Background:
- Ruminant livestock contribute significantly to greenhouse gas emissions.
- Nutritional interventions are explored to mitigate these emissions.
- Polyphenols are investigated for their potential to modulate rumen fermentation.
Purpose of the Study:
- To evaluate the impact of polyphenols extracted from Castanea mollissima Blume involucres (PICB) on in vitro rumen fermentation.
- To determine the optimal dosage of PICB for improving rumen fermentation efficiency and reducing methane production.
- To assess the effects of PICB on volatile fatty acids (VFAs), ammonia nitrogen, and gas production.
Main Methods:
- In vitro rumen fermentation using rumen fluid from Angus bulls.
- Dietary supplementation with varying doses of PICB (0-0.5% DM).
- Measurement of VFAs, ammonia nitrogen (NH3-N), methane (CH4) yield, and gas production over 96 hours.
Main Results:
- PICB significantly reduced NH3-N concentrations.
- Acetic acid content decreased, while propionic acid content increased with PICB addition.
- Optimal PICB dosage (0.2-0.3%) reduced methane content and yield, improving the acetic acid/propionic acid ratio.
- Significant linear and quadratic responses observed for fermentation parameters with increasing PICB levels.
Conclusions:
- PICB effectively modulates in vitro rumen fermentation.
- A dosage of 0.2% PICB demonstrated the most significant improvements in fermentation efficiency.
- PICB shows promise as a nutritional strategy to reduce greenhouse gas emissions from ruminants.
