Table 4.

EcPV2 genoprevalence of the mares.

	Positive	Negative	Total
Maiden	4	21	25
Pluriparous	47	57	104
Total	51	78	129
p-value	0.0111
No foal	21	18	39
Foal	26	52	78
Total	47	70	117
p-value	0.0452
Natural service	34	31	65
Artificial insemination	16	48	64
Total	50	79	129
p-value	0.0037