TABLE 1.

Number of families consisting of affected full-sibs and half-sibs used in the initial genome scan and for more specific analyses on SSC 1

	HS per family				FS per family
	2 HS	3 HS	4 HS	5 HS	2 FS	2 FS + 1 HS	2 FS + 2 HS	Familyg
Initial genome scan of families (n = 27)	15a	5	2c	3e	1e	1
Specific analyses of families, SSC 1 (n = 35)	19b	6	1	1	3d	2e	2ef	1

FS, full-sibs; HS, half-sibs.

^aThirteen are paternal HS families and 2 are maternal HS families.

^bSeventeen are paternal HS families and 2 are maternal HS families.

^cOne FS family only father and 1 FS family only mother genotyped.

^dOne FS family only father and 2 FS families only mother genotyped.

^eMothers not genotyped.

^fAdditional single piglets can increase the number of affected pigs per family.

^gExtended family over four generations: a father, two sons, and a grandson with three affected offspring in total.