Exploring the influence of endometritis diagnostic criteria on uterine involution, milk yield and fertility in dairy cows

Table 3 Results from logistic regression analyses predicting the first service conception rate (FSCR) in dairy cows

	Estimate	SE	Odds Ratio	p-value	95% CI of OR
Model 1					Lower	Upper
Primiparous	ref
Multiparous	-0.68	0.31	0.51	0.029	0.28	0.93
H	ref
SE	-0.99	0.43	0.37	0.023	0.16	0.87
PVD1	-1.18	0.43	0.31	0.007	0.13	0.72
PVD2	-0.99	0.48	0.37	0.038	0.15	0.95
PVD3	-0.67	0.49	0.51	0.173	0.20	1.34
Model 2
Primiparous	ref
Multiparous	-0.67	0.31	0.51	0.030	0.28	0.94
H	ref
SE	-1.07	0.35	0.34	0.002	0.17	0.68
CE	-0.79	0.38	0.45	0.039	0.21	0.96

In Model 1 (n = 223), Polish Holstein cows were classified into three groups: healthy (H; characterized by < 5% endometrial polymorphonuclear cells [PMN] and absence of purulent vaginal discharge [PVD]), subclinical endometritis (SE; marked by ≥ 5% PMN and PVD0), and various PVD categories (including PVD1 with flecks of pus in the vaginal discharge, PVD2 with mucopurulent vaginal discharge, and PVD3 with purulent vaginal discharge, irrespective of endometrial PMN%). In Model 2 (n = 220), the classification included healthy (H; <5% PMN and PVD0), SE (≥ 5% PMN and ≤ PVD1), and clinical endometritis (CE; ≥5% PMN and > PVD1)

ISSN: 1746-6148