How do i Make my ducks not mate

[Ol Grey Mare]

Technically there is a difference but it is only the shape of a speck that most people never even notice. I would post a picture but I have not been able to upload pictures for awhile now for some unknown reason.

I was referring to suitability for consumption, to wot there is no noticeable difference as the blastodisc/bladtodetm isdue has no impact on such