Glycerol as a feed supplement for ruminants: In vitro fermentation characteristics and methane production

Glycerol is rapidly fermented to propionate in the rumen. Due to the inverse relationship between propionate production and enteric CH₄ emissions, glycerol may reduce rumen CH₄ production. However, little data have been reported to substantiate this hypothesis. Our objectives were to determine rumin...

Full description

Saved in:
Bibliographic Details
Published in:Animal feed science and technology 2011-06, Vol.166, p.269-274
Main Authors: Lee, Se-Young, Lee, Sang-Moon, Cho, Young-Bae, Kam, Dong-Keun, Lee, Sang-Cheol, Kim, Chang-Hyun, Seo, Seongwon
Format: Article
Language:English
Subjects:
Acetic acid
alfalfa hay
ammonia
Biological and medical sciences
corn
digestible energy
emissions
energy efficiency
fatty acid composition
Feed and pet food industries
feed supplements
feeds
Fermentation
Food industries
foods
Fundamental and applied biological sciences. Psychology
Glycerol
greenhouse gases
In vitro
Methane
methane production
rumen
rumen fermentation
Ruminantia
ruminants
volatile fatty acids
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Glycerol is rapidly fermented to propionate in the rumen. Due to the inverse relationship between propionate production and enteric CH₄ emissions, glycerol may reduce rumen CH₄ production. However, little data have been reported to substantiate this hypothesis. Our objectives were to determine ruminal fermentation rate of glycerol and effects of glycerol on in vitro fermentation and CH₄ production. Glycerol (0.5g), alfalfa hay (0.5g), corn grain (0.5g), alfalfa hay (0.5g)+glycerol (0.1g) and corn grain (0.5g)+glycerol (0.1g) were anaerobically incubated in vitro using strained rumen fluid for 0, 3, 6, 12, 24 and 48h. At each incubation time, total gas and CH₄ production, pH, ammonia and volatile fatty acid concentrations (VFA) were measured. By fitting an exponential model with a single lag, a fractional gas production rate of 0.051/h with a lag of 7.9h for glycerol, which was a slower rate and a longer lag than for the other substrates (P
ISSN:0377-8401
1873-2216
DOI:10.1016/j.anifeedsci.2011.04.070