Figure 2

Female age and occurrence of mating are indicators of superovulation efficiency. The percentage of female’s not ovulating (black bar), ovulating (gray bar) and superovulating (white bar) following hormone treatment and separated cohabitation in (A) the absence of mating and (B) the presence of mating. These data suggest that to recover large numbers of oocytes hormone treatment and separated cohabitation are needed for superovulation to occur in the absence of mating. However, for the recovery of embryos hormone treatment and mating alone are sufficient. Treatment group 1.1 (G1.1) did not receive hormone treatment or separated cohabitation. Treatment group 1.2 (G1.2) did receive hormone treatment but did not undergo separated cohabitation. Treatment group 1.3 (G1.3) received hormone treatment and underwent separated cohabitation. Treatment group 2.1 (G2.1) did not receive hormone treatment but did undergo separated cohabitation while Treatment group 2.2 (G2.2) received hormone treatment but did not undergo separated cohabitation. Treatment group 2.3 (G2.3) received hormone treatment and underwent separated cohabitation. Asterisk represents a significant p-value (p < 0.05).