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

Table 2 Assessment of ovarian activity. Criterium based on the presence of corpus luteum (CL), absence of CL with follicles larger than 0.5 cm (NON-CL), presence of ovarian cysts, and inactive ovaries with minimal follicular activity

		CL	NON-CL	Cysts	Inactive ovaries
Model 1	p-value	0.046	0.045	0.174	0.899
Total	N (%)	107 (48.0)	91 (40.8)	13 (5.8)	12 (5.4)
H	n (%)	41 (56.9) ^a	21 (29.2) ^a	7 (9.7)	3 (4.2)
SE	n (%)	13 (30.2) ^b	25 (58.1) ^b	2 (4.7)	3 (7.0)
PVD1	n (%)	20 (41.7) ^ab	21 (43.8) ^ab	4 (8.3)	3 (6.2)
PVD2	n (%)	18 (54.5) ^ab	14 (42.4) ^ab	0 (0.0)	1 (3.0)
PVD3	n (%)	15 (55.6) ^ab	10 (37.0) ^ab	0 (0.0)	2 (7.4)
Model 2	p-value	0.022	0.019	0.053	0.780
Total	N (%)	105 (47.7)	91 (41.3)	12 (5.5)	12 (5.5)
H	n (%)	41 (56.9) ^a	21 (29.2) ^a	7 (9.7)	3 (4.2)
SE	n (%)	33 (36.7) ^b	46 (51.1) ^b	5 (5.5)	6 (6.7)
CE	n (%)	31 (53.4) ^ab	24 (41.4) ^ab	0 (0)	3 (5.2)

In Model 1 (n = 223), cows were categorized into: healthy (H; <5% endometrial polymorphonuclear cells [PMN] and no purulent vaginal discharge [PVD]), subclinical endometritis (SE; ≥5% PMN and PVD0), and various PVD categories (PVD1 with flecks of pus, PVD2 with mucopurulent discharge, or PVD3 with purulent discharge, regardless of endometrial PMN%). Model 2 (n = 220) classified cows as H (< 5% PMN and PVD0), SE (≥ 5% PMN and ≤ PVD1), and clinical endometritis (CE; ≥5% PMN and > PVD1). Different superscripts (a and b) within columns indicate a significance level of p < 0.05

ISSN: 1746-6148