Waste Characteristics Data

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, B o (m 3 CH 4 /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 0.30 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 8.80 0.60 0.48 Market Swine 60-119 lbs 41 5.40 0.42 0.48 Market Swine 120-179 lbs 68 5.40 0.42 0.48 Market Swine >180 lbs 91 5.40 0.42 0.48 Breeding Swine 198 2.60 0.24 0.48 Feedlot Sheep 25 9.20 0.42 0.36 Goats 64 9.50 0.45 0.17 Horses 450 10.00 0.30 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 10.80 0.83 0.39 Broilers 0.9 15.00 1.10 0.36 Turkeys 6.8 9.70 0.74 0.36