Table 1.

Summary of sperm parameters in AI dose and field fertility, data presented as mean ± SD (n = 19 boars).

	Mean ± SD	Min-Max
Sperm concentration (million/ml)	36.9 ± 1.8	33.9-39.8
Major sperm defects (%)	3.0 ± 2.6	0.5-11.0
Minor sperm defects (%)	11.2 ± 8.7	2.0-33.7
Morphologically normal spermatozoa (%)	84.8 ± 10.3	55.0-96.0
Proximal droplets (%)	1.1 ± 0.8	0.2-27
Subjective motility (%)	77.1 ± 4.6	66.7-85.3
CASA-assessed total motility (%)	91.2 ± 5.9	75.4-95.8
Litter size of multiparous farrowings	12.0 ± 0.7	10.5-13.3
Nonreturn rate within 60 days of first insemination (%)	82.2 ± 3.8	77.0-89.0