. 2023 Dec 21;10:1272835. doi: 10.3389/fvets.2023.1272835

Table 4.

Rumen methanogens diversity and taxa abundances in 26-week-old goats measured at 21 days after a shift from a high-concentrate to a full forage diet (oats hay).

Treatments ¹	CTL	AUT	RFF	RFC	SED	p-value
Concentration, log10 copy/mg DM	6.60	6.85	6.83	7.24	0.343	0.218
Diversity
Richness, OTUs	8.67^b	9.00^b	13.5^a	11.0^ab	1.452	0.008
Shannon	1.32^a	0.92^b	1.37^a	1.32^a	0.128	0.005
Simpson	0.66^a	0.47^b	0.62^a	0.64^a	0.056	0.009
Abundance ¹, %
f_Methanobacteriaceae	17.4	22.2	26.4	23.6	3.768	0.764
f_Methanocaldococcaceae	0.00	0.00	0.15	0.28	0.091	0.187
g_Methanocaldococcus	0.00	0.00	0.00	0.28	0.077	0.058
f_Methanomicrobiaceae	3.73	0.00	0.00	3.57	1.657	0.534
f_Methanomassiliicoccaceae	78.9	77.8	73.2	72.6	3.639	0.838
s_Group8_sp WGK1	0.00	0.05	1.81	0.71	0.521	0.088
s_Group10_sp	18.5	3.99	4.63	6.34	2.446	0.053
s_Group11_sp ISO4-G11	19.1^a	0.00^b	18.8^a	18.5^a	4.697	0.018
g_Group9	34.5^b	71.4^a	43.8^ab	40.4^ab	6.052	0.041
s_Group9_sp CH1270	0.00^b	0.00^b	0.01^b	0.43^a	0.125	0.046
s_Group9_sp ISO4-G1	34.3^b	71.4^a	43.8^ab	40.0^ab	6.049	0.035

During the first 10 weeks of age, goats (N = 36) received a daily and oral inoculation with autoclaved rumen fluid (AUT), rumen fluid from adult animals fed forage (RFF), or fed concentrate diets (RFC) or without inoculation (CTL). Means within a raw with different superscript differ (p < 0.05).