| Problem Level | Goal | |
| Average age, years | 3 | 2-2.5 |
| Average parity | 5 | 3 |
| Weaning to breeding, days | 7+ | 5 |
| Entry to breeding, days | 40+ | 28 |
| Repeat services, % | 8 | 5 |
| Abortions, % | 3 | 1 |
| Farrowing rate, % (gilts) | 70 | 85 |
| Farrowing rate, % (sows) | 75 | 90 |
| Number born alive | 9 | 12 |
| Stillborns, % | 7 | 3 |
| Mummies, % | 1 | 0.5 |
| Pre-weaning survival, % | 87 | 92 |
| Pigs weaned/litter | 8.5 | 10 |
| Litters/female/year | ||
| 3-week weaning | 1.93 | 2.35 |
| 4-week weaning | 1.84 | 2.23 |
| 5-week weaning | 1.75 | 2.13 |
| Problem Level | Goal | |
| 15 to 40 pounds | ||
| Average daily gain, pounds | 0.70 | 0.90 |
| Daily feed intake, pounds | 1.2 | 1.5 |
| Feed / gain | 1.71 | 1.67 |
| Survival, % | 95 | 99 |
| 40 to 240 pounds | ||
| Average daily gain, pounds | 1.50 | 1.90 |
| Daily feed intake, pounds | 5.30 | 5.60 |
| Feed / gain | 3.53 | 2.95 |
| Survival, % | 98 | 99 |
| Problem Level | Goal | |
| Pigs marketed / female / year | ||
| 3-week weaning | 18.00 | 23.03 |
| 4-week weaning | 16.50 | 21.86 |
| 5-week weaning | 15.00 | 20.88 |
| Feed / pound of hog sold | 3.75 | 3.05 |
| Days to 230 pounds | 170 | 149 |
| Days to 250 pounds | 180 | 165 |
| Last rib backfat, in. (at 230 lbs.) | 1.1 | 0.8 |
| Fat free lean index | 48 | 54 |
| (Feeder Pig Production) | ||
| Problem Level | Goal | |
| Pigs marketed / female / year | ||
| 3-week weaning | 18.40 | 23.26 |
| 4-week weaning | 16.80 | 22.08 |
| 5-week weaning | 15.30 | 21.09 |
| Feed / pound pig sold | 4.33 | 3.75 |
| Weight / Class | Winter (min / max) | Summer |
| Sow and litter | 20 / 80 | 500 |
| Growing pigs | ||
| 12-20 pounds | 2 / 10 | 25 |
| 20-50 | 2 / 15 | 36 |
| 50-100 | 5 / 20 | 48 |
| 100-150 | 7 / 25 | 72 |
| 150-230 | 10 / 35 | 120 |
| Sows and boars | ||
| 250-300 pounds | 12 / 40 | 180 |
| 300-500 | 15 / 45 | 250 |
a - Adapted from "Structures and Environment Handbook," Midwest Planning Service, 1983, and "Mechanical Ventilation of Swine Buildings," Pork Industry Handbook PIH-60. b - Cubic feet per minute. c - Ventilation rates are cumulative Maximum summer rates include minimum and maximum winter rates. For properly designed curtain-sided barns, mechanical ventilation is only required for winter ventilation. | ||
| Class | Weight, lbs. | Confinement [c] | Pasture Space [d] | Shelter Space | Animals / Pen [e] |
| Growing Pigs | 15-30 | 1.7-2.5 | ----- | ||
| 30-60 | 3-4 | ----- | 4 | ||
| 60-100 | 5 | 50-100 | 4 | 20-30 | |
| 100-150 | 6-8 | 50-100 | 6 | 20-30 | |
| 150-market | 8-10 | 50-100 | 6 | 20-30 | |
| Gestation | 250-300 | 14 | 10 | 15-20 | 6-12 |
| 300-500 | 16 | 10 | 15-20 | 6-12 | |
| Breeding | 250-300 | 24 | NA | 15-20 | 1-6 |
| 300-500 | 30 | NA | 15-20 | 1-6 | |
| Boars | 300-500 | 40 | NA | 15-20 | 1 |
a - Adapted from "Space Requirements For Swine," Pork Industry Handbook (PIH-55), and "Structures And Environment Handbook," Midwest Planning Service, 1983. b - Requirements listed as square feet per pig, except for pasture space. c - Requirements are for floors using partial slats, total slats, or open gutter flush (raised deck flooring for pigs under 30 pounds) d - Pasture requirements are listed as number of animals per acre. Actual pasture or lot space requirements depend on soil type, slope of the land, plant growth, and rainfall. e - The number of pigs per pen from 60 pounds to market can exceed 30 on pasture / drylot if adequate waterers and feed space are available. However, small groups can reduce labor and management costs. | |||||