This paper analyses the reasons that brings couples to apprehend very
differently the oocyte and sperm donation and highlights the difficult
y of donor recruitment in those programs. The various types of donors
(occasional, relational, IVF patient and professionnal) are described
with their motivations, resistances, advantages and disavantages. The
contradictory consequences between free or paid donation, the particul
ar risks of eggs donation (in comparison to sperm donation) for the do
nor as for the recipient are also highlighted. The problem of anonymit
y is also analysed in ethical terms but also in terms of technical eff
icacy : it is shown that anonymity, by authorizing sharing oocytes bet
ween recipients increases treatment efficacy by avoiding wasting this
rare and precious ressource of oocytes offered as a donation.