Regarding Equivalents:

To spay means to remove the ovaries of an animal.. -- wow

Ovaries--Analog: testes.
Therefore
Hysterectomy--Analog:Castration.
Simple.

Uterus--Analogy: no analogy.

My fellow fellows: face it, you will never be pregnant.

Question: Do you imagine more hysterectomies are performed by men, or by women?

This is Pelotas, signing off.