Calculate required ADG to reach market weight on schedule. Color-coded pass/warning/fail feasibility check against nursery, grower, and finisher benchmarks.
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ADG projection is highly sensitive to starting weight. A 10-lb error at 120 lbs changes the required ADG by 0.12 lbs/day for an 85-day period — enough to shift from "Pass" to "Warning". Weigh a representative sample (minimum 10% of pen) before planning.
Individual pigs will vary ±20% around the group mean. A required ADG of 2.0 lbs/day means some pigs need 2.4 and some only 1.6. Ensure the barn environment supports the entire distribution, not just the average.
A pig at 125 lbs is classified as grower (benchmark 1.5–1.8 lbs/day), but most of the remaining gain will occur in the finisher phase (benchmark 1.8–2.2). If the pig spans both phases, the actual achievable ADG may be higher than the grower-phase benchmark suggests.
Required ADG = (target weight − current weight) days available. Phase is inferred from current weight: nursery < 50 lbs, grower 50–130 lbs, finisher > 130 lbs. Feasibility benchmarks: nursery 0.8–1.2, grower 1.5–1.8, finisher 1.8–2.2 lbs/day (NRC 2012; PIC Technical Manual 2023). All computation is client-side — no data leaves your browser.
Last validated 2026-04-08. Calculations are designed for planning and documentation support; verify procurement decisions against manufacturer specifications or institutional SOPs.
ConductScience Swine Growth Target Planner (v1.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/swine-growth-target-planner
National Research Council. Nutrient Requirements of Swine. 11th ed. National Academies Press, 2012.
PIC. Wean-to-Finish Nutrient Specifications. PIC Technical Manual, 2023.
Average daily gain varies substantially across production phases due to differences in nutrient partitioning, gut maturity, and frame size.
Factors limiting ADG below benchmarks: subclinical respiratory disease (PRRS, IAV-S), nutritional gaps (lysine below requirement), environmental temperature extremes, stocking density above 7–8 sq ft/pig in finishing.
Market weight planning balances packer requirements, seasonal pricing, and production capacity. Typical commercial market weights in North America range from 260–300 lbs live weight (130–150 lbs carcass weight).
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