Identification of a major locus interacting with MC1R and modifying black coat color in an F2 Nellore-Angus population

Table 1 Locations, test statistics, size of effects, and proportion of variance explained of QTL for degree of black detected using E ^D E ⁺ F ₂ Nellore-Angus cattle using interval analysis

BTA	Pos (Mb)	Flanking markers	Test statistics			Effects
			F	LRT	LOD	Mean ± SE	Additive^a± SE	Dominance^b± SE
4^*	59	Hapmap23995-BTA142201 - ARS-BFGL-NGS-105821	8.23	15.82	3.44	-0.5052 ± 0.1989	-0.4765 ± 0.1986	0.9234 ± 0.2834
5^**	110	Hapmap3063-BTA-15439 - UA-IFASA-8960	8.87	17.01	3.69	0.5213 ± 0.1858	-0.0598 ± 0.1842	-1.2687 ± 0.3080
6^**	71	ARS-BFGL-NGS-93633 - Hapmap24750-BTC-042016	114.61	153.42	33.31	-0.5183 ± 0.1326	-1.7699 ± 0.1327	1.1841 ± 0.1874

^aQTL genotypic value of Nellore homozygote such that 2a = NN-AA; ^bNA heterozygote deviation from QTL homozygote midpoint such that d = NA-0.5 (NN + AA); ^*suggestive chromosome-wide (P < 0.05); ^**significant chromosome-wide (P < 0.01).

ISSN: 1297-9686