Why does SBS recommend selling frozen semen as part of a contract rather than by the dose?
1). Unlike bovine frozen semen which is sold by the dose as a commodity, the frozen semen from young stallions is not thoroughly fertility tested before being sold on the market. A dairy farmer who purchases a dose of frozen semen from a Holstein bull from a reputable AI or genetics company can be very confident of the fertility potential of that dose of semen when handled properly and inseminated into a fertile cow. The reason for this is that dairy sires have been selectively bred for milk production AND fertility, more specifically fertility in an AI program with frozen semen. The range in fertility per cycle for commercial AI bulls is very small and only a few percentage points separate high fertility bulls from average and low fertility bulls. Furthermore, bulls with low fertility with frozen semen are not commercially viable and are culled from commercial production so their frozen semen never reaches the market. Fertility testing of a young dairy sire’s frozen semen involves the
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