. 2020 Jul 30;10(8):1307. doi: 10.3390/ani10081307

Table 4.

Daily mean, maximum and nadir rumen pH and duration (minutes) where pH was below 6.0, 5.8 and 5.6 during the three stages of adaptation to either fodder beet bulb and herbage (FBH) or herbage-only (HO) diets.

Adaptation Stage ¹	Stage One		SE ²	Stage Two		SE	Stage Three		SE	p-Value
Adaptation Stage ¹	HO	FBH	SE ²	HO	FBH	SE	HO	FBH	SE	Diet	Stage	Period	Cow	D × S³
Nadir pH	5.62 ^a	5.57 ^a	0.04	5.64 ^a	5.47 ^b	0.04	5.71 ^a	5.48 ^b	0.05	***	0.41	***	***	*
Max pH	6.35 ^b	6.43 ^a	0.02	6.46 ^c	6.48 ^c	0.03	6.46 ^c	6.55 ^d	0.04	0.15	***	***	***	**
Mean pH	6.01 ^b	6.03 ^b	0.002	6.09 ^d	6.04 ^c	0.003	6.16 ^f	6.08 ^e	0.004	***	***	***	***	***
pH < 6.0	516 ^b	475 ^a	2.8	392 ^d	441 ^c	3.2	349 ^f	369 ^e	3.7	***	***	***	***	***
pH < 5.8	142 ^b	126 ^a	1.5	118 ^d	134 ^c	1.7	99 ^f	108 ^e	1.8	***	***	***	***	***
pH < 5.6	12.2 ^b	20.9 ^a	0.7	10.9 ^d	30.0 ^c	0.9	10.9 ^d	20.8 ^a	0.8	***	***	***	***	***

^a–f means in the same row with different superscripts differ (p < 0.05). p < 0.05 *; p < 0.01**; p < 0.001 ***. ¹ Stage one: transition to FB allocation days 1–12; stage two: days 13–17; stage three: days 18–20. ² SE: standard error of estimated marginal means. ³ Diet by adaptation stage interaction.