[Pregnancy diagnosis by detection of pregnancy-associated glycopoteins in milk: evaluation of a commercial available ELISA].

In order to increase fertility in modern dairy farming, the interval between first insemination and conception should be as short as possible. Therefore, one approach is to diagnose non pregnant animals early to re-inseminate them as soon as possible. Commercial milk pregnancy assays are available to detect throphoblast derived bovine pregnancy-associated glycoproteins (bPAG) in milk.