Generate a day-by-day old-to-new feed ratio schedule. Export as a printable PDF or ICS calendar file for feedroom reminders.
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Load example Feed Transition Scheduler data to see the full workflow
When to use
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The first 2–3 days of a transition rarely show visible symptoms even when an abrupt change would cause problems. The enteric disruption from skipping transition days accumulates and manifests as diarrhea on day 4–6. Treat the schedule as mandatory, not optional.
Mixing directly in the bin or auger introduces variation from day to day. Use separate bins or pre-weigh batches to ensure each day's ratio is accurate. Inaccurate mixing, especially in the first 2 days, can cause the same effect as an abrupt change.
A longer transition is always safer than a shorter one. If animal health or feed availability allows, extending to 10–14 days for nursery pigs at weaning further reduces post-weaning diarrhea incidence. The tool defaults to 7 days but accepts any duration.
Ratios are calculated using linear interpolation: new feed% = (day transition_days) 100, rounded to the nearest whole percent. Day 1 always starts at no more than 25% new feed. Day N completes at 100% new feed. Based on Lalles et al. (2007) and NRC (2012) transition recommendations. 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 Feed Transition Scheduler (v1.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/swine-feed-transition-scheduler
Lalles, J.P., et al. Weaning — a challenge to gut physiology and nutrition of the young pig. Livestock Science, 2007. doi:10.1016/j.livsci.2007.01.091
National Research Council. Nutrient Requirements of Swine. 11th ed. National Academies Press, 2012.
Pig digestive physiology is highly sensitive to dietary change. The small intestine harbors a complex microbiome that is calibrated to the specific substrates in the current diet. An abrupt substrate change can cause dysbiosis — an overgrowth of pathogenic bacteria (particularly hemolytic E. coli) relative to beneficial lactobacilli.
A 7-day stepwise transition minimizes these effects by allowing gradual enzymatic adaptation and microbial community shift without triggering the acute inflammatory response associated with abrupt diet change.
This tool uses a linear interpolation from 100% old / 0% new on Day 0 to 0% old / 100% new on Day N+1.
In practice, mixing ratios are approximated to the nearest 5% or 10% for feedroom simplicity. The exact ratio matters less than maintaining a consistent progression across the full transition window.
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