Tier 2 energy coefficients.

Coefficients for IPCC Tier 2 GE calculation including Cfi (maintenance), Ca (activity), Cp (pregnancy), Cw (work), and energy content of weight gain. Now includes subcategory column to differentiate dairy (lactating) vs non-dairy cattle.

Usage

ipcc_tier2_energy_coefs

Format

A tibble with columns:

category

Species (Cattle, Buffalo, Sheep, etc.).

subcategory

Dairy, Non-Dairy, or All.

cfi_mj_day_kg075

NEm coefficient (MJ/day/kg^0.75).

ca_pasture

Activity coefficient for grazing.

ca_feedlot

Activity coefficient for confined.

cp

Pregnancy coefficient.

cw

Work coefficient.

energy_content_gain_mj_kg

Energy per kg gain.

Source

IPCC 2019 Refinement, Vol 4, Ch 10, Eq 10.3-10.16; Tables 10.4-10.5.

Examples

ipcc_tier2_energy_coefs
#> # A tibble: 6 × 8
#>   category subcategory cfi_mj_day_kg075 ca_pasture ca_feedlot    cp    cw
#>   <chr>    <chr>                  <dbl>      <dbl>      <dbl> <dbl> <dbl>
#> 1 Cattle   Dairy                  0.386     0.17            0 0.1       0
#> 2 Cattle   Non-Dairy              0.322     0.17            0 0.1       0
#> 3 Buffalo  Dairy                  0.386     0.17            0 0.1       0
#> 4 Buffalo  Non-Dairy              0.322     0.17            0 0.1       0
#> 5 Sheep    All                    0.217     0.0107          0 0.077     0
#> 6 Goats    All                    0.217     0.0107          0 0.077     0
#> # ℹ 1 more variable: energy_content_gain_mj_kg <dbl>