Know · Breeds, terms & health
Plain-language definitions for steer, heifer, cow, bull, feeder, stocker, and related ranch terms — then jump into the right calculator.
A male bovine castrated before secondary sexual characteristics develop.
Steers are the primary fed-beef animal in U.S. feedlots. Castration reduces aggression and improves carcass quality traits relative to intact bulls. “What is a steer?” is a common beginner query — they are not cows and not breeding bulls.
A young female bovine that has not yet had a calf (or is in first pregnancy).
Replacement heifers are retained to enter the cow herd. Bred heifers are pregnant with their first calf. Heifer calving ease and target breeding weights are critical management points.
An adult female bovine that has had at least one calf.
Cow-calf operations keep cows to produce weaned calves each year. Dry cows are not lactating; wet/lactating cows have higher nutrient and water needs.
An intact adult male used for breeding.
Herd bulls (or AI sires) drive genetic progress and calving ease. Bull battery costs are often evaluated per calf weaned.
Weaned cattle intended to be grown and finished for slaughter, often sold by weight.
Feeder cattle (including stocker/yearling types) are priced heavily on weight, flesh, and futures/cash markets. Lot value tools help estimate purchase or sale value before shrink and commission.
Growing cattle on forage (or grower rations) between weaning and finishing.
Stocker programs add weight cheaply on grass or wheat pasture before feedlot entry. ADG and cost of gain drive margins.
A young bovine, typically from birth to weaning (or young stock generally).
Nursing calves stay with the dam until weaning. Preconditioning prepares weaned calves for shipping and the next production phase.
A lactating cow with her nursing calf, often stocked as one animal unit equivalent near 1.0 AUE.
Pairs drive spring/summer pasture demand. Stocking rate tools often default to pair AUE and higher dry-matter intake.
Both are growing cattle after weaning; stockers often graze to gain weight, while feeders are typically headed toward a finishing program. Local usage varies — see the glossary entries.
No. A heifer is a young female that has not yet had a calf (definitions can vary slightly by stage). A cow has calved.