Final answer:
Weaning dairy calves refers to the process of transitioning them from mother's milk to solid foods, typically occurring between 80 and 90 days after birth, which is important for their development and dairy farm management.
Step-by-step explanation:
In the context of animal biology and agriculture, weaning refers to the process of transitioning young animals from their mother's milk to a diet of solid food. In the case of dairy calves, they are typically weaned between 80 and 90 days after birth. This weaning period is necessary for the calves' development, allowing them to start digesting grass and grains, which will become their staple food as they mature. The milk previously consumed by the calves can then be harvested for dairy production. Megan's Diary farm, where 85 cows are milked twice a day, would be well-acquainted with this process as it is essential for managing the milk supply and promoting the health of both calves and producing cows.