Show test to find when eggs will become fertile A test conducted in canada shed some light on tile the quest loo of bow soon boon after the male Is introduced eggs become fertile in this test five days after the introduction of the trials male halt half tile the eggs were fertile on the seventh day 70 per cent of the eggs were fertile and the per cent of fertility remained fairly constant at this figure another test was conducted to see fee how long the eggs remained fertile after the male was removed for the first four days 70 per cent were fertile on the seventh half of the eggs were fertile on the tenth day after the removal of the male all were infertile |