It has long been a stain on the dairy industry — the slaughter of unwanted male "bobby" calves in their first week of life.

Maleny Dairies, an independent dairy processor on the Sunshine Coast, says it is addressing those concerns on its home farm.

The family-owned business has celebrated the arrival of its first female calf born from a program that sexes semen before the herd is artificially inseminated to ensure the majority of calves are born female.

Bobby calves welcome tourists on farm visits to the factory and there is a waiting list for an adoption program.

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