Question 1: Should we breed donors coming into heat one day earlier or later than the predicted date?

Answer:Yes.Our data records no difference in embryo production,however two days later than the predicted date has not been successful.

Question 2: If the donor exhibits signs of estrus but does not stand ,embryos have not been recovered.In this case great care has to be taken that the donor did not stand or a stand was missed.Correct tail head marking would answer this question.