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In nature and in old style farms cows were started to lactate by breeding them. The lactation would then continue after birth as long as the cattle were milked. There are, however, cattle with the heredity to be significant milk producers but which exhibit low fertility (don't have calves). These can be induced to produce milk by injections of bovine somatotropin (bST) and then made to increase milk production with injections of estrogen plus progesterone,

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7y ago
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13y ago

Yes. No milk will be produced until it is needed - to feed a calf.

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12y ago

What do you mean "without heat"? Heifers don't require it to be warm or hot outdoors to be able to get bred if that's what you mean. They can be bred when it's cold out too.

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13y ago

No.

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13y ago

Yes

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Q: Are there any circumstances where a cow can give milk without having a calf first?
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