As a subject matter expert in animal husbandry, I can provide you with an accurate answer to your question.

Dairy cows are bred specifically to produce milk for human consumption. However, they do not have milk at all times. A dairy cow's lactation cycle typically lasts for about 10 months, after which she will enter a dry period of about 2 months before she can become pregnant again and start the cycle anew. During the lactation period, the cow will be milked two or three times a day, but as she approaches the end of this cycle, her milk production will gradually decrease. It's important to note that the ability to produce milk is directly tied to the cow's reproductive cycle; she must be pregnant or have recently given birth to begin and maintain a lactation cycle.

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Today, modern dairy cows are bred specifically to produce large quantities of milk. Like humans, cows only produce milk after they have given birth, and dairy cows must give birth to one calf per year in order to continue producing milk. Typically they are artificially inseminated within three months of giving birth.read more >>