Table 1. The minimum dilution ratio (semen: extender) for
cooled-shipped semen based on the raw sperm concentration of semen and
the progressive motility cutoff values for centrifugation by
concentration of the ejaculate. If the raw semen sperm concentration is
< 125 x 106 then centrifugation is needed,
for other concentrations the minimum dilution ratio is listed in the
adjacent column. In the table are specific concentrations for each range
and the corresponding minimum progressive motility needed to avoid
having an insemination dose with a volume > 60-ml.
*If the progressive motility is less the cutoff value,
centrifugation is recommended to avoid having a large insemination
volume (> 60-ml). The progressive motility cutoff values
are calculated for a breeding dose with a total number of progressively
motile sperm of ≥ 1 x 109 and a volume of 60-ml.