Abstract
Artificial insemination with fresh or stored semen is currently the only sperm technology used at a commercial scale in the pig industry. Attention should therefore be given for further improvement of the functionality and fertilizing ability of cryopreserved semen, as well as for sperm sorting for gender pre-selection. During the last two decades various proteins and polypeptides have been identified in boar seminal plasma, and the relevance of some of them to reproductive technologies has been discussed at this conference. The long- term goal should be to isolate/synthetize those seminal plasma proteins proven important for the spermatozoa, and use them as ingredients in media used for e.g. cryopreservation and sex sorting of semen. A close cooperation between biochemists, molecular biologists and animal scientists is necessary to reach this goal.
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