first-calf

first-calf

said of heifers aged about 2 years usually, with their first calf just born.
References in periodicals archive ?
The trend is most pronounced of all in a first-calf heifer which will give more milk in both her first and second lactations if her first calf is female.
Ultimately, dairy producers benefit not only from larger calves, but also bigger, younger, more productive first-calf heifers.
Fifteen-hundred Bridport dairy cattle of all ages, from first-calf heifers to mature milk cows, have become the newest generators in Vermont.