Pig (Grower/Finisher) — Finisher (125-280 lbs) Feed Requirements
Finisher pigs consume 6-9 lbs per day with reduced protein (13-15%) as the growth curve shifts from lean to fat deposition. Energy becomes the primary nutritional focus. Feed efficiency decreases to 3.5-4.0 lbs feed per lb of gain. Ractopamine or other feed additives may be used in the final 45-90 lbs to improve lean gain.
Finisher (125-280 lbs) Feeding at Different Body Weights
The daily feed requirements for pig (grower/finisher) in the finisher (125-280 lbs) stage vary directly with body weight. The table below shows how dry matter intake, protein needs, and monthly feed costs change across a range of body weights. The DMI adjustment of 1.3x is applied at every weight level, reflecting the consistent metabolic demands of this production phase regardless of the individual animal's size.
| Body Weight | Daily DMI | Daily Protein | Daily TDN | Monthly Feed | Monthly Cost* |
|---|---|---|---|---|---|
| 90 lbs | 5.9 lbs | 0.8 lbs | 4.7 lbs | 176 lbs | $14.96 |
| 105 lbs | 6.8 lbs | 0.9 lbs | 5.5 lbs | 205 lbs | $17.45 |
| 120 lbs | 7.8 lbs | 1.1 lbs | 6.2 lbs | 234 lbs | $19.94 |
| 135 lbs | 8.8 lbs | 1.2 lbs | 7.0 lbs | 263 lbs | $22.44 |
| 150 lbs | 9.8 lbs | 1.3 lbs | 7.8 lbs | 293 lbs | $24.93 |
| 165 lbs | 10.7 lbs | 1.5 lbs | 8.6 lbs | 322 lbs | $27.42 |
| 180 lbs | 11.7 lbs | 1.6 lbs | 9.4 lbs | 351 lbs | $29.91 |
| 195 lbs | 12.7 lbs | 1.7 lbs | 10.1 lbs | 380 lbs | $32.41 |
| 225 lbs | 14.6 lbs | 2.0 lbs | 11.7 lbs | 439 lbs | $37.39 |
*Monthly cost estimated using grass hay at $150/ton.
Feed Options for Pig (Grower/Finisher) (Finisher (125-280 lbs))
Different feeds provide varying levels of protein and energy for pig (grower/finisher) in the finisher (125-280 lbs) stage, which requires a minimum of 13.6% crude protein and 80% TDN. The table below compares common feeds, showing the as-fed daily quantity needed to meet the dry matter requirement and whether each feed meets the protein and TDN thresholds as a sole feed source.
| Feed | CP % | TDN % | As-Fed/Day | Protein OK? | TDN OK? | Monthly Cost* |
|---|---|---|---|---|---|---|
| Grass Hay | 8% | 52% | 11.1 lbs | No | No | $24.93 |
| Alfalfa Hay | 18% | 58% | 10.8 lbs | Yes | No | $40.63 |
| Timothy Hay | 9% | 55% | 11.1 lbs | No | No | $33.24 |
| Bermuda Grass Hay | 10% | 52% | 11.1 lbs | No | No | $26.59 |
| Whole Corn | 9% | 88% | 11.1 lbs | No | Yes | $36.56 |
| Cracked Corn | 9% | 88% | 11.1 lbs | No | Yes | $39.89 |
| Oats | 12% | 70% | 11.0 lbs | No | No | $34.51 |
| Barley | 13% | 84% | 11.1 lbs | No | Yes | $38.22 |
| Pasture Grass (Fresh) | 12% | 62% | 39.0 lbs | No | No | $0.00 |
| Layer Pellets | 16% | 70% | 10.8 lbs | Yes | No | $65.00 |
| Broiler Starter | 22% | 78% | 10.8 lbs | Yes | No | $73.13 |
| Horse Sweet Feed | 12% | 72% | 11.1 lbs | No | No | $58.17 |
| Alfalfa Hay Cubes | 17% | 56% | 10.8 lbs | Yes | No | $48.75 |
*Cost based on the listed feed as the sole source at current pricing.
Herd Budgets: Pig (Grower/Finisher) Finisher (125-280 lbs)
For operations managing multiple pig (grower/finisher) animals in the finisher (125-280 lbs) stage, the following table projects total feed requirements and costs for various herd sizes. These projections use grass hay pricing and assume all animals are at the average body weight of 150 lbs.
| Head Count | Daily DMI Total | Monthly Tons | Annual Tons | Monthly Cost | Annual Cost |
|---|---|---|---|---|---|
| 1 | 9.8 lbs | 0.15 tons | 1.78 tons | $24.93 | $303.30 |
| 5 | 48.8 lbs | 0.73 tons | 8.90 tons | $124.64 | $1,516.51 |
| 10 | 97.5 lbs | 1.46 tons | 17.79 tons | $249.29 | $3,033.03 |
| 25 | 243.8 lbs | 3.66 tons | 44.48 tons | $623.22 | $7,582.56 |
| 50 | 487.5 lbs | 7.31 tons | 88.97 tons | $1,246.45 | $15,165.13 |
| 100 | 975.0 lbs | 14.63 tons | 177.94 tons | $2,492.90 | $30,330.26 |
Nutritional Management Tips for Finisher (125-280 lbs)
Proper nutritional management during the finisher (125-280 lbs) phase is critical for pig (grower/finisher) health, productivity, and profitability. The DMI adjustment factor of 1.3x reflects the increased metabolic demands of this production phase compared to maintenance. Similarly, the protein adjustment of 0.85x reduces the dietary crude protein requirement to 13.6% of dry matter.
When formulating rations for this stage, start with the forage base and determine how much of the protein and energy requirements it provides. If the forage alone does not meet the protein or TDN requirements shown in the feed comparison table above, supplement with protein concentrates (soybean meal, cottonseed meal) or energy sources (corn, barley, fat supplements) to fill the gap. Always make dietary changes gradually over 7-14 days to allow the digestive microbiome to adapt, particularly for ruminant species where sudden changes can cause acidosis, bloat, or other digestive disturbances.
Water intake is closely linked to dry matter intake and is often overlooked in feeding calculations. As a general rule, livestock consume 2-4 lbs of water per lb of dry matter consumed, with lactating animals at the high end of this range. Ensure that clean, fresh water is available at all times, as even mild dehydration reduces feed intake and animal performance. During winter, heated water sources prevent freezing and maintain intake. During summer heat, shade and ventilation reduce heat stress that can depress feed intake by 10-20%.
Monitor body condition scoring (BCS) regularly to verify that the feeding program is achieving the desired results. Animals gaining or losing condition outside the expected range indicate that feed quality or quantity needs adjustment. Laboratory analysis of forage samples ($15-$30 per sample) provides accurate protein and energy values for your specific hay or silage, which may differ significantly from the book values used in this calculator. Hay quality varies by cutting, maturity at harvest, storage conditions, and weather during the curing process, making testing the most reliable basis for ration formulation.
Other Pig (Grower/Finisher) Life Stages
Compare feed requirements across all pig (grower/finisher) production phases.