Table 3.

Effect of a clay mineral (CM)-based product on the concentration of blood metabolites in dairy cows subjected to two intermittent subacute ruminal acidosis (SARA)-feeding phases with 65% concentrates for 1 week (SARA 1) or 2 weeks (SARA 2), separated by a 1-week SARA recovery with 100% forages

	SARA 1		Recovery		SARA 2			P-value
Variables	CON	CM	CON	CM	CON	CM	SEM	SARA 1	Recovery	SARA 2
Glucose (mg/dl)	72.4	70.8	67.4	66.9	74.0	74.9	2.09	0.47	0.82	0.70
Cholesterol (mg/dl)	39.3	40.5	72.9	69.9	61.4	59.4	6.53	0.81	0.57	0.70
BHBA (mmol/l)	0.355	0.405	0.343	0.330	0.255	0.320	0.0393	0.36	0.82	0.24
NEFA (mmol/l)	0.075b	0.135a	0.081	0.069	0.055	0.033	0.0209	0.03	0.64	0.41
Lactate (mmol/l)	0.79a	0.56b	0.56	0.60	0.72	0.56	0.089	0.03	0.70	0.13
AST (U/l)	102	93.8	102	88.1	135a	101b	19.81	0.53	0.32	0.01
GLDH (U/l)	21.3	12.8	20.5	14.9	48.6a	25.8b	9.28	0.39	0.57	0.02
GGT (U/l)	25.9	25.6	27.0	25.3	30.5	27.9	2.36	0.90	0.39	0.20

CON=control; BHBA=β-hydroxybutyrate; NEFA=non-esterified fatty acids; AST=aspartate aminotransferase; GLDH=γ-glutamyltransferase; GGT=glutamate dehydrogenase.

^a,b Different superscripts represent differences among CON- and CM-groups within a feeding phase with P≤0.05.