What would be the gender-neutral version of the term "dairyman"?
I would suggest "dairy farmer" if you mean the owner of the dairy farm. And "dairy farm worker" if you mean the general worker. These are the official occupations (at least in most of the English speaking countries)
Also, the business is called dairy farming.
1. A man who owns or manages a dairy.
2. A man who works in a dairy.
dairy farmer: the owner or manager of a dairy
There are even dairy farmers associations in different countries:
Here is a list of dairy occupations (from the book "Modern Livestock & Poultry Production" By James Gillespie, Frank Flanders):
- cheese cooker
Dairy cattle herder
Dairy cow washer
Dairy farm worker
- laborer, dairy farm
Dairy herd supervisor (DHIA)
Dairy management specialist
Dairy nutrition specialist
Field contact technician, dairy
Manager, dairy farm
Milk plant supervisor
- milking machine operator
Supervisor, dairy processing
- butter production supervisor
- cheese production