Estimation of sperm concentration limits to produce intrauterine insemination in swine

This study evaluated the effect of sperm concentration of boar semen doses, for intrauterine artificial insemination (IUAI), on semen quality and established concentration limits for their production. Twenty ejaculates from four crossbred mature boars were collected to produce 50 mL semen doses in a split sample, reaching the following sperm concentrations: ~20, 30, 60, and 100 × 106 cells/mL. Doses were stored at 17°C, and evaluated until 120 h of storage. There was a linear decrease in sperm motility as the sperm concentration increased (p linear < 0.01). The concentration which no longer affected the total and progressive motility was 59 ...

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