Angus Cattle Feed Calculator — Beef Production Ration (Cow-Calf / Finishing)

Feed calculator for Angus beef cattle across cow-calf, backgrounding, and finishing phases. NRC-aligned dry matter intake, ADG targets, and finishing weight projections.

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Species

Number of animals

Average weight (lb)

Feeding days

Winter feeding: 120–180 days in most US regions.

Bale weight (lb)

Small square: 40–80 lb · Large round: 800–1,500 lb.

Total hay needed

22.5tons · 750 bales

Per animal/day: 30 lb · Total: 45,000 lb

Add 10–15 % waste allowance for round bales fed without a hay ring (higher in muddy conditions).

How to use the Angus feed calculator

Select 'cattle' species — In the hay calculator below.
Enter headcount + average weight — Cow-calf, backgrounding, or finishing phase.
Add concentrate for finishing — 0.6 % body weight grain for finishing steers.
Plan supply — Output: daily + monthly hay + grain requirements.

Beef cattle production phases and feed targets

Phase	Weight range	DM intake	ADG target
Nursing calf (0–6 mo)	80–500 lb	Milk + creep	1.5–2 lb
Weaned calf (backgrounding)	500–750 lb	20–25 lb	1.75–2.5 lb
Feedlot (growing)	750–1,000 lb	22–28 lb	2.5–3.5 lb
Feedlot (finishing)	1,000–1,450 lb	22–25 lb	3.0–4.0 lb
Replacement heifer	Growing to 1,150	18–24 lb	1.5–1.8 lb
Adult cow (maintenance)	1,200–1,400 lb	26–35 lb	Maintain BCS 5–6/9
Adult cow (lactating)	1,200–1,400 lb	40–45 lb	Milk production

Frequently Asked Questions

How much does an Angus cow eat per day?

An adult 1,300 lb Angus beef cow at maintenance eats 26–35 lb of dry matter daily — about 2 % of body weight. Lactating cows rise to 40–45 lb DM/day to support milk production. Finishing steers on concentrated feedlot rations consume 22–25 lb DM/day targeting 3–4 lb average daily gain (ADG) and 1,300–1,500 lb finish weight at 14–18 months.

What is the standard finishing ration for Angus cattle?

Typical US feedlot finishing ration: 75–85 % concentrate (steam-flaked or cracked corn, distillers grains) + 15–25 % roughage (corn silage, alfalfa hay, cottonseed hulls) + 2–3 % supplement pack (minerals, vitamins, ionophores). Finishing period 120–180 days post-backgrounding. Target: 0.6 % body weight in concentrate, ADG 3.2–4.0 lb/day, feed conversion 5.8–6.5 lb DM per pound gained.

How much pasture does one Angus cow need?

Rule of thumb: 1 cow-calf pair per 1.5–2 acres on productive improved pasture; 3–5 acres on average rangeland; 10–20+ acres in arid western US. Actual stocking rate depends on rainfall, soil fertility, grass species, and management (rotational vs. continuous grazing). NRCS technical guides for your specific county provide accurate local stocking rates.

When should Angus calves be weaned?

Traditional weaning age: 6–8 months at 450–550 lb. Early weaning (3–5 months) is increasingly used to reduce cow body-condition pressure in drought years. Fenceline weaning (calf across a fence from mother) reduces stress and shrink compared to truck weaning. Target post-weaning backgrounding: 1.5–2 lb ADG to 750–850 lb before feedlot entry.

How much do backgrounding cattle gain?

Backgrounding (post-weaning, pre-feedlot) target: 1.75–2.5 lb ADG depending on ration. Programs vary from pasture-only backgrounding (low input, 1.5–2 lb ADG) to high-energy drylot programs (2.5–3 lb ADG). Duration typically 90–150 days, taking weaned calves from 500–600 lb to 750–850 lb feedlot entry weight.

Sources & References

[1]
American Angus Association — American Angus Association
[2]
Nutrient Requirements of Beef Cattle — NRC 2016
[3]
Beef Cattle Feeding & Nutrition — University of Minnesota Extension
[4]
NRCS Grazing Resources — USDA NRCS