Table 1. Korea’s livestock population in 1990 and 2020

Animal Category	Population (head)
Animal Category	1990	2020
Dairy cattle	499,689	408,243
Hanwoo cattle*	1,502,768	3,190,768
Beef cattle*	76,230	161,855
Swine	4,412,206	11,184,873
Chicken layer	40,127,223	73,541,183
Chicken broiler	24,049,628	97,557,487
Duck	716,871	8,676,228

Data from KOSIS [18] and Ministry of Agriculture, Forestry, and FIsheries [19].
No divided categories for beef cattle and Hanwoo in 1990, using the proportion in year 2020 to divide Hanwoo and beef cattle