What is an ox? Everyone seems to agree that it is a mature bovine trained to pull loads. There is some disagreement in the English speaking world about whether oxen must be male. Whether the word means only male or any working bovine shouldn't be the point.
According to Paul Starkey of AnimalTraction.org, globally there are more female working animals than male. Most of the draft animal using world doesn't speak English anyway.
To avoid controversy we can adopt a new term. I like Ux taurus - the bull's wife. If Latin isn't your thing, the term handy cow is a good description.
Cows are multi-use. The same cow that I milk can be used for draft work. A German study has shown that 4 hours or less of work per day does not have a significant effect on milk production. Cows should have some rest time before and after calving. I have very little time to work train animals. i could not justify keeping animals that didn't produce in a way beyond their work.