1.054
IF5
1.150
IF
Q3
JCR
1.7
CiteScore
0.396
SJR
Q2
SJR
40
MNiSW
148.75
ICV
SHORT COMMUNICATION
 
CC-BY 4.0
 
 

Influence of disodium fumarate on methane production and microbial activity in Rusitec fermenters fed a mixed diet

M. L. Tejido 1,  
M. J. Ranilla 1,  
L. A. Giraldo 1,  
M. D. Carro 1  
 
1
Department of Animal Production, University of León, 24071 León, Spain
J. Anim. Feed Sci. 2007;16(Suppl. 2):609–614
Publication date: 2007-09-17
KEYWORDS
ABSTRACT
The objective of this study was to investigate the effects of disodium fumarate (FUM; 3.75 mmol/d) on the fermentation of a 60:40 grass hay:concentrate substrate in Rusitec fermenters. Each of eight fermenters received daily 20 g of substrate dry matter (DM). FUM treatment tended to increase (P=0.076) substrate DM disappearance after 6 h of incubation (39.8 vs 42.2%), but no effects were detected after 48 h (P=0.830). Daily production of acetate, propionate and total volatile fatty acids (VFA) was increased by 11, 23 and 11%, respectively, in FUM fermenters, but methane production was not affected (P=0.167). FUM treatment decreased (P<0.001) the acetate:propionate (2.92 vs 2.62) and methane:VFA (0.248 vs 0.208) ratios and increased the daily flow of microbial N (P=0.007; 140 vs 149 mg/d). In contrast, FUM did not affect (P=0.260 to 0.960) either the numbers of total and cellulolytic bacteria or the fibrolytic activity of ruminal fluid.
CORRESPONDING AUTHOR
M. D. Carro   
Department of Animal Production, University of León, 24071 León, Spain
ISSN:1230-1388