Maximum CH4 producing capacity of manure (m3 CH4/kg VS). Dairy cattle (0.24) differs from other cattle (0.18).
Source
IPCC 2019 Refinement, Vol 4, Ch 10, Table 10.16A (Updated). That
edition has no Table 10.16: its list of tables jumps from Table 10.15
(Updated), the per-head manure CH4 factors for deer, reindeer, rabbits,
ostrich and fur-bearing animals, straight to Table 10.16A. Table 10.16
is the 2006 Guidelines' number for that deer/reindeer/rabbit/fur-bearing
table (0.22/0.36/0.08/0.68 kg CH4 head-1 yr-1, no ostrich row), and the
2006 edition has no Bo table at all – its Bo defaults live in Annex
10A.2. Every row matches its high-productivity column except
"Swine - Breeding" 0.27: Table 10.16A publishes one swine Bo
(0.48 North America, 0.45 other high-productivity regions, 0.29 low
productivity) and the 2006 Annex 10A.2 derivation tables give breeding
swine the same Bo as market swine, so 0.27 appears in neither edition;
it coincides with the North American market swine volatile-solids
rate of 0.27 kg VS head-1 day-1 in 2006 Annex 10A.2. "Other Cattle"
0.18 is the Western European non-dairy column (North America is 0.19,
Eastern Europe and Oceania 0.17). Tracked in whep#601.
Examples
ipcc_2019_bo
#> # A tibble: 12 × 2
#> category bo_m3_kg_vs
#> <chr> <dbl>
#> 1 Dairy Cattle 0.24
#> 2 Other Cattle 0.18
#> 3 Buffalo 0.1
#> 4 Swine - Market 0.45
#> 5 Swine - Breeding 0.27
#> 6 Sheep 0.19
#> 7 Goats 0.18
#> 8 Horses 0.3
#> 9 Mules and Asses 0.33
#> 10 Camels 0.26
#> 11 Poultry - Layers 0.39
#> 12 Poultry - Broilers 0.36