Correlations between periparturient serum concentrations of non-esterified fatty acids, beta-hydroxybutyric acid, bilirubin, and urea and the occurrence of clinical and subclinical postpartum bovine endometritis

Table 1 Logistic regression models showing the effect of metabolic parameters on the risk of health category for cows at week 5 postpartum¹

Parity group	Metabolic parameter	Time of Sampling^a	Health category^b(n)	P value	Odds ratio^c	95% confidence interval
Primiparous cows	Urea	+1	CE (18) vs. H (53)	0.04	1.65	1.03-2.65
	Urea	+1	CE (18) vs. SCE (6)	0.09	3.07	0.84-11.29
Multiparous cows	NEFA	-1	SCE (20) vs. H (91)	0.04	12.07	1.07-136.27
	NEFA	-1	CE (21) vs. H (91)	0.05	9.08	1.00-82.28
	Urea	+5	SCE (20) vs. CE (21)	0.03	0.49	0.26-0.93
	Urea	+5	H (91) vs. CE (21)	0.01	0.57	0.37-0.86
	NEFA	+5	SCE (20) vs. H (91)	0.06	4.09	0.93-17.95

¹ Only combinations were a difference (P < 0.05) between median values for NEFA, BHBA, bilirubin and urea in the health categories was found by Kruskal-Wallis-H-test are shown.
^a relative to calving in weeks
^b Health category: healthy (H), clinical endometritis (CE) and subclinical endometritis (SCE)
^c Odds ratios are based on the continuous variables of the logistic regression models with an 1 mmol/L increase of metabolites as units.

ISSN: 1746-6148