Effect of milk replacer allowance on calf faecal bacterial community profiles and fermentation

Table 1 Faecal SCFA measurements

VFAs	LA		HA		ADLIB		FDR¹
VFAs	Mean	SEM²	Mean	SEM	Mean	SEM
Concentration (mM)
Total SCFA	57.55	3.96	56.24	3.37	57.98	4.80	0.421
Acetic acid	40.61	2.68	39.21	2.56	37.09	2.77	0.378
Propionic acid	9.29	0.81	9.58	0.66	11.71	1.27	0.336
Butyric acid	5.29	0.61	3.89	0.32	4.61	0.62	0.159
Valeric acid	0.75	0.06	0.97	0.07	0.90	0.10	0.104
Isobutyric acid	0.89^b	0.08	1.42^a	0.13	1.85^a	0.26	< 0.001***
Isovaleric acid	0.76^b	0.08	1.20^b	0.12	1.81^a	0.31	< 0.001***
Acetate/propionate	5.03^a	0.44	4.20^ab	0.13	3.46^b	0.17	< 0.001***
Proportion (%)
Acetic acid	71.40^a	0.84	69.55^a	0.80	65.12^b	1.06	< 0.001***
Propionic acid	15.57^b	0.57	16.92^b	0.46	19.63^a	0.65	< 0.001***
Butyric acid	8.54^a	0.61	6.86^b	0.30	7.33^ab	0.39	0.0373*
Valeric acid	1.35^b	0.10	1.76^a	0.09	1.74^a	0.16	< 0.001***
Isobutyric acid	1.73^b	0.16	2.66^a	0.24	3.22^a	0.20	0.0193*
Isovaleric acid	1.47^c	0.15	2.27^b	0.22	3.02^a	0.25	< 0.001***

¹Permutational multivariate analysis of variance (PERMANOVA) was performed to test for differences between the LA (n = 33), HA (n = 26), and ADLIB (n = 28) treatment groups. P-values were adjusted using the false discovery rate (FDR) method. Asterisks indicated FDR significance at P < 0.05 (*) and P < 0.001 (***). For variables with FDR < 0.05, Fisher’s least significant difference test was performed and results are shown in superscript next to the mean values
²Standard error of the mean

ISSN: 2524-4671