TABLE 4.

Ancestor effective population size based on linkage disequilibrium (r²), calculated from generation 5 to 500 for eight Chinese cattle breeds and Datong yak.

Generations ago	Population
	Yunnan Humped	Dengchuan	Wenling Humped	Wannan	Sanhe	Mongolian	Hazake	Xinjiang Brown	Datong yak
500	1,367	2,113	1,188	1,609	1,750	3,032	1,952	1,328	194
250	909	1,414	710	1,009	1,237	2,488	1,263	844	117
100	527	830	375	557	668	1,637	629	383	53
75	461	769	314	494	558	1,445	498	268	60
50	317	533	222	347	376	971	341	203	109
25	179	258	205	180	196	497	166	129	171
10	112	179	118	84	86	189	56	87	118
5	76	147	111	78	69	128	47	77	66