Table 3. The GHG emission intensity of production (kgCO₂-eq kg CW^-1) with regard to enteric methane production in 2020.

	Baseline	Scenario 2	Reduction
Tier 1a	60.9	51.2	16%
Tier 2 b	45.2	38.2	16%

^a. These results are based on the IPCC Tier 1 emission factor relevant for cattle from Asia, which is equal to 47 (kg CH₄ head^-1 yr^-1) [17].

^b. These results are based on IPCC Tier 2 emission factors, which are calculated by taking into account the weights of different cattle cohorts within the herd (e.g. cows, heifers, bulls, replacement animals) and performance factors including growth rates and diet quality [17].