Identification of QTL with effects on intramuscular fat content and fatty acid composition in a Duroc × Large White cross

Sanchez, Marie-Pierre; Iannuccelli, Nathalie; Basso, Benjamin; Bidanel, Jean-Pierre; Billon, Yvon; Gandemer, Gilles; Gilbert, Hélène; Larzul, Catherine; Legault, Christian; Riquet, Juliette; Milan, Denis; Le Roy, Pascale

doi:10.1186/1471-2156-8-55

Table 3 Results of detection of QTLs affecting fatty acids composition

From: Identification of QTL with effects on intramuscular fat content and fatty acid composition in a Duroc × Large White cross

			Position	LR³	Genotypic mean (%)
SSC	Trait¹	P²	(cM)		Du/Du	Du/LW	LW/LW
1	C18:1	+	124	11.2	-0.79	0.36	0.43
1	C18:2 n-6	++	29	16.0	0.82	0.02	-0.84
1	MUFA	+	122	13.0	-0.93	0.38	0.55
1	P:S	+	29	12.4	3.90	-0.30	-3.60
2	C22:5 n-6	+	122	12.4	-0.03	-0.02	0.05
4	C22:5 n-6	+	117	12.9	-0.01	-0.03	0.04
5	MUFA	+	118	11.0	-0.49	-0.27	0.76
7	C18:1	+	66	13.9	0.43	0.51	-0.94
7	C18:2 n-6	+	60	15.0	-0.54	-0.37	0.91
7	C22:4 n-6	++	48	17.5	-0.04	-0.01	0.05
7	C22:5	*	48	18.5	-0.05	0.00	0.05
7	CLC	+	46	12.5	-0.02	-0.07	0.09
8	C16:0	+	66	14.1	-0.27	0.42	-0.14
9	C14:0	+	27	11.1	0.07	-0.05	-0.02
9	C18:0	+	14	10.8	-0.31	0.09	0.22
9	C20:3	*	88	18.3	0.01	0.03	-0.04
10	C16:1	+	106	12.7	0.12	0.03	-0.15
10	C18:1	+	103	13.4	0.62	0.34	-0.96
10	C18:2 n-6	+	108	11.1	-0.43	-0.40	0.83
10	C20:5	*	27	17.4	0.01	-0.04	0.03
10	C22:5 n-6	++	42	15.3	-0.01	-0.02	0.04
10	MUFA	*	41	15.9	0.02	0.71	-0.73
10	UC	+	42	11.6	0.00	-0.02	0.02
11	C17:1	+	92	12.4	-0.01	-0.09	0.11
11	C22:6 n-3	++	51	15.2	0.03	-0.01	-0.02
11	PUFA	+	89	13.6	1.41	-0.62	-0.80
11	P:S	+	63	13.2	4.73	-2.11	-2.62
11	UC	+	65	11.6	0.04	-0.02	-0.01
12	C16:1	+	40	11.6	-0.12	0.05	0.07
13	C18:1	+	45	12.2	0.81	-0.45	-0.36
13	C22:5 n-6	+	102	12.7	-0.02	-0.03	0.05
13	MUFA	+	45	14.6	0.96	-0.62	-0.34
14	C16:0	+	22	14.6	-0.07	0.33	-0.26
14	C16:1	**	67	22.0	-0.19	0.04	0.15
14	C18:0	*******	67	32.9	0.51	-0.09	-0.43
14	C18:2 n-6	+	22	13.2	0.42	-0.78	0.36
14	C20:3 n-3	++	21	14.9	0.02	-0.03	0.01
14	C22:5 n-6	+	32	22.2	0.02	-0.03	0.01
14	SFA	**	45	23.7	0.62	0.11	-0.73
14	MUFA	+	67	12.3	-1.02	0.36	0.65
14	PUFA	+	23	12.6	0.73	-1.19	0.46
14	P:S	++	23	15.2	1.75	-4.06	2.30
14	UC	+	26	12.6	0.02	-0.03	0.01
14	CLC	**	65	23.4	0.13	-0.04	-0.09
15	C14:0	*	44	18.4	0.08	-0.10	0.03
16	C16:0	+	33	12.7	-0.13	-0.26	0.39
18	C20:5 n-3	+	7	11.9	-0.01	0.03	-0.01

¹Percentages of saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids, unsaturation coefficient (UC), chain length coefficient (CLC), ratio of polyunsaturated fatty acids to saturated fatty acids (P:S); ²Maximum likelihood ratio significant at the 5% (+) or 1% (++) at the chromosome-wide level and in bold 5% (*), 1% (**) or 0.1% (***) at the genome wide level; ³LR: Maximum likelihood ratio

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ISSN: 2730-6844

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