Table 1.

Glucose and lactate concentrations and enzyme activities of AST, GLDH and LDH in jejunal mucosa of dairy cows exposed to heat stress (HS) or pair-feeding (PF) at thermoneutrality for 4 days.

Item	HS	PF	P value
Glucose (µmol/g protein)	31.0 ± 4.0	22.0 ± 4.0	0.1#
Lactate (µmol//g protein)	170.0 ± 11.0	164.0 ± 14.0	0.42
AST (U/g protein)	249.1 ± 21.4	251.4 ± 36.5	0.69
GLDH (U/g protein)	138.1 ± 25.4	140.6 ± 18.1	1.0
LDH (U/g protein)	184.8 ± 20.3	174.6 ± 52.1	0.42

HS n = 5, PF n = 5. Data are given as mean ± SEM (MWU test).

^#0.06 < P < 0.1.