Fine-tuning genomic and pedigree inbreeding rates in equine population with a deep and reliable stud book: the case of the Pura Raza Española horse

Table 1 Inbreeding, founders, ancestors, and common ancestors of Pura Raza Española horse population by generational intervals

GI	N	F, %	Funders	NEF	Ancestors	fe	fa	fe/fa	MCA [Min, Max]	F_ij, %
1950–1959	1818	6.87	410	330	350	58	33	1.75	18.29 [1, 63]	0.73
1960–1969	2357	6.73	407	323	348	44	26	1.69	28.45 [1, 132]	0.26
1970–1979	6046	7.48	387	309	344	34	20	1.70	49 [1, 173]	0.17
1980–1989	17,091	8.40	394	317	351	30	18	1.66	81.83 [1, 248]	0.12
1990–1999	53,102	8.32	424	337	394	29	17	1.70	124.76 [1, 336]	0.08
2000–2009	150,129	7.45	411	324	383	32	19	1.68	183.36 [26, 521]	0.05
2010–2019	109,062	7.28	339	315	379	34	19	1.78	242.40 [34, 771]	0.03

GI Generational interval, N number of individuals born, F mean classical inbreeding, NEF number of equivalent founders, fe effective number of founders, fa effective number of ancestors, fe/fa ratio between fe and fa, MCA mean common ancestors, Min minimum number of common ancestors, Max maximum number of common ancestors, F_ij mean partial inbreeding coefficient

ISSN: 2049-1891