because the gonadotropins used for the induction of heat may cause an inappropriate maternal response.
The insemination in queens can be performed during natural or induced heat with a subsequent induction of the ovulation by using e.g. hCG (100-250 IU) on the second or third day of the estrus. AI during natural heat is preferable because the gonadotropins used for the induction of heat may cause an inappropriate maternal response. The ovulation in cats generally occurs 24-48 hours after coitus (Shille et al., 1983). After the determination of the optimal moment by means of