Simple: don't milk her, and don't breed her.
Because it s obtained from a specific type of cow, its harder to keep healthy and producing milk.
They produce milk just like any other cow that is pregnant or not.
lucy
It's possible, but if you catch that milk-thieving cow right away and separate her from the herd to wean her from doing that (or just outright cull her) the open cow shouldn't produce, or rather continue producing milk.
The Holstein.
Neither, except if you are referring to how it comes from a cow and is the source where many other dairy products are made, in which case it would be "producing." Logically, A cow produces milk, and it is consumed by the calf or by humans.
Think of it like this as long as you keep on using the human breasts for milk it will keep on producing the milk same thing for a cow as long as you keep on using its nipples for milk it will keep on producing the milk just like a human can. However, this in itself is not completely fool-proof. Most cows will start to decrease in milk production after the first few months of giving birth to a calf. To maximize the amount of milk that a cow produces, a dairy producer considers it pertinent to rebreed that cow so that she calves 11 to 12 months later. Thus, the other answer to this question is not only are cows able to keep producing milk by being milked regularly (not constantly), but also by being able to give birth to a calf once a year.
This will depend if she is at her peak of lactation, when the calf is drinking the most milk, therefore she is producing more. In this case she can be still producing milk for 3 or even 5 months after that. However, if the calf is nearing weaning age (about 10 months), than the cow might be producing milk for about 2 months. This will change from cow to cow depending on how well they produce milk, heavy milkers will produce longer than light milkers.
This is the period where the cow is producing milk, and is always after giving birth to a calf.
Udder enlargement, equal quarters
To make her stop producing milk.
milk