Effects of fumaric acid supplementation on methane production and rumen fermentation in goats fed diets varying in forage and concentrate particle size

Table 5 Effects of dietary Fps:Cps and FA supplementation (0 or 24 g/d) on the relative abundances of rumen bacteria

Items	Low-Fps:Cps		High-Fps:Cps			P-value
FA, g/d	0	24	0	24	SEM	Fps:Cps	FA	(Fps:Cps) × FA
Total bacterial abundance, × 10⁻⁴
Methanogens	15.11	12.37	15.84	12.67	0.699	0.711	0.036	0.875
F. succinogenes	89.26	86.72	81.61	91.17	4.493	0.861	0.703	0.511
R. flavefaciens	2.10	2.03	1.81	2.14	0.121	0.725	0.611	0.443
S. ruminantium	8.21	8.72	7.79	8.36	0.261	0.467	0.312	0.965
B. fibrisolvens	4.07	3.87	5.36	4.84	0.233	0.014	0.408	0.711

FA fumaric acid, Fps:Cps ratio of forage particle size: concentrate particle size, SEM pooled standard error of the means
Data are expressed as a fraction of the total bacterial 16S rDNA

ISSN: 2049-1891