40 CFR Part 98, Table JJ-2
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| Animal type | Typical animal mass(kg) | Volatile solids excretion rate(kg VS/day/1000 kg animal mass) | Nitrogen excretion rate(kg N/day/1000 kg animal mass) | Maximum methane generation potential, Bo(m3 CH4/kg VS added) |
|---|---|---|---|---|
| Dairy Cows | 604 | See Table JJ-3 | See Table JJ-3 | 0.24 |
| Dairy Heifers | 476 | See Table JJ-3 | See Table JJ-3 | 0.17 |
| Dairy Calves | 118 | 6.41 | 0.3 | 0.17 |
| Feedlot Steers | 420 | See Table JJ-3 | See Table JJ-3 | 0.33 |
| Feedlot heifers | 420 | See Table JJ-3 | See Table JJ-3 | 0.33 |
| Market Swine <60 lbs | 16 | 8.8 | 0.6 | 0.48 |
| Market Swine 60-119 lbs | 41 | 5.4 | 0.42 | 0.48 |
| Market Swine 120-179 lbs | 68 | 5.4 | 0.42 | 0.48 |
| Market Swine >180 lbs | 91 | 5.4 | 0.42 | 0.48 |
| Breeding Swine | 198 | 2.6 | 0.24 | 0.48 |
| Feedlot Sheep | 25 | 9.2 | 0.42 | 0.36 |
| Goats | 64 | 9.5 | 0.45 | 0.17 |
| Horses | 450 | 10 | 0.3 | 0.33 |
| Hens >/= 1 yr | 1.8 | 10.09 | 0.83 | 0.39 |
| Pullets | 1.8 | 10.09 | 0.62 | 0.39 |
| Other Chickens | 1.8 | 10.8 | 0.83 | 0.39 |
| Broilers | 0.9 | 15 | 1.1 | 0.36 |
| Turkeys | 6.8 | 9.7 | 0.74 | 0.36 |