What is a good ADG for backgrounding on improved pasture?

On improved summer pasture, 0.8-1.3 kg/day is typical for backgrounding steers. On improved temperate pasture in spring, 1.0-1.4 kg/day is achievable. On native pasture in winter, 0.2-0.5 kg/day is normal.

What is compensatory gain?

When cattle are re-alimented after restricted feed, ADG is 20-40% above the normal baseline for 4-8 weeks as the body rebuilds protein reserves. Factor this into projections when transitioning from poor to good nutrition.

How to reduce ADG measurement variation?

Weigh at same time of day after 12-hour overnight fast. Same yards and scales. Calm conditions. Minimum 21 days between weighings for statistically reliable ADG.

Livestock Weight Gain (ADG) — Free Agriculture Calculator

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Backgrounding cattle have been on the property for six weeks. The weighbridge is booked tomorrow. You need ADG and projected turn-off date before the cattle agent rings back this afternoon.

Livestock Weight Gain (ADG)

Livestock

Start weight (kg)

Imperial: enter lb

End weight (kg)

Days on feed / in paddock

Species

Sale price ($/kg LW) — optional

Liveweight price for value calculation

ADG = (End weight − Start weight) ÷ Days Target ADG benchmarks:
Cattle (feedlot): ≥1.2 kg/day · Cattle (grass): 0.5–1.0 kg/day
Lamb (prime): ≥0.30 kg/day · Sheep: ≥0.25 kg/day · Pig: ≥0.85 kg/day

Reference: Meat & Livestock Australia (MLA) · Australian Wool Innovation

ℹ️ Results are estimates for planning purposes. Verify with current standards and a qualified professional.

1 What this calculator does

Calculates average daily gain (ADG) in kg/day from initial weight, current weight and days on feed. Projects days to reach a target sale weight. Supports kg and lb in imperial mode.

2 Formula & professional reasoning

ADG (kg/day) = (Current weight - Initial weight) / Days on feed
Days to target = (Target weight - Current weight) / ADG
Projected weight = Current weight + (ADG x Days remaining)

ADG is the primary production efficiency metric for backgrounding, feedlot and pasture enterprises. It drives cost of production, draft decision timing and sale weight projections. Seasonal variation is large — winter native pasture may yield 0.2 kg/day while summer improved pasture achieves 1.2 kg/day. Use season-specific ADG for projections.

3 Worked examples

⚠️ Illustrative example only — not clinical or professional instruction.

Basic

Calculate ADG from weighbridge records

Given: Initial weight: 280 kg (day 0) | Current weight: 347 kg (day 63)

Working: ADG: (347 - 280) / 63 = 67 / 63

Answer: ADG 1.06 kg/day — good backgrounding performance

💡 To reach 380 kg target: (380-347) / 1.06 = 31 more days.

Standard

Project draft date from current performance

Given: Current weight: 295 kg | ADG: 0.85 kg/day | Target: 380 kg

Working: Days to target: (380 - 295) / 0.85 = 85 / 0.85

Answer: 100 days to target weight

💡 Cross-check against seasonal grass availability. If autumn break is 80 days away, may need supplementary feed.

Advanced

Assess performance against budget

Given: Budget ADG: 1.1 kg/day | Actual ADG day 45: 0.82 kg/day | Start: 280 kg

Working: Budget weight day 45: 280+(1.1x45)=329.5 | Actual: 280+(0.82x45)=316.9 | Deficit: 12.6 kg

Answer: 12.6 kg behind budget at day 45

💡 At $3.20/kg LW and 200 head: $8,064 shortfall. Review feed source or stocking rate.

4 Sanity check

Typical ADG benchmarks

Feedlot grain (HGP): 1.8-2.5 kg/day | Backgrounding improved pasture: 0.8-1.3 | Winter native: 0.2-0.5

Compensatory gain

Cattle re-alimented after restriction gain 20-30% above base ADG

Allow for compensatory gain from poor-pasture history.

Weighing consistency

Yard weight is 3-5% less than paddock weight (gut fill)

Always weigh at same time of day after same fasting period.

Minimum weighing interval

21 days minimum for reliable ADG calculation

Shorter intervals dominated by gut fill variation.

5 Common errors

Error	Cause	Consequence	Fix
Weights taken under inconsistent conditions	Morning paddock vs afternoon yard weight	ADG wildly wrong — bad production decisions	Always weigh at same time of day after same fasting period. Document conditions on every weigh record.
Using last season's ADG for next season projection	Assuming constant ADG	Turn-off date projections significantly wrong	ADG varies dramatically between seasons. Use season-specific ADG or apply a seasonal adjustment factor.
Assuming linear ADG to any weight	Not accounting for slowing near finish weight	Cattle on target weight earlier or later than projected	ADG typically slows 10-15% as cattle approach mature weight. Review at regular weighing intervals.
Projecting turn-off without checking paddock feed budget	Animal performance only	Cattle reach target weight but no grass remains	Project both target weight date and paddock feed budget date. The earlier one is the constraint.