QTL detection for coccidiosis (Eimeria tenella) resistance in a Fayoumi × Leghorn F2 cross, using a medium-density SNP panel

Table 1 Results of the single-QTL analysis

Tool	Trait	GGA	Location (cM)	Confidence interval size (cM)	Significance level	Additive effect^a ± se	Heterozygous sires (/6)	Fayoumi origins^b
QTLMap	WG	1	203	200–206	*	7.12 ± 2.13	4	4/4
QTLMap	T°	2	247	240–247	*	0.21 ± 0.03	3	1/3
QTLMap	F1	3	227	224–240	*	0.36 ± 0.11	5	4/5
QTLMap	T°	8	58	45–63	*	0.21 ± 0.02	3	1/3
QTLMap	F1	9	39	35–43	*	0.33 ± 0.13	3	0/3
QTLMap	T°	10	77	72–88	*	0.19 ± 0.07	3	2/3
QTLMap	T°	11	15	15–25	*	0.17 ± 0.01	4	1/4
QTLMap	T°	16	-	-	*	0.18 ± 0.04	3	1/3
QTLMap	LES	22	2	0–5	*	0.22 ± 0.08	4	2/4
GridQTL	WG	1	96	93–99	**	-7.72 ± 1.74	-	-
GridQTL	T°	2	259	257–261	**	0.27 ± 0.06	-	-
GridQTL	WG	3	37	34–38	*	-7.02 ± 1.90	-	-
GridQTL	HEMA	3	128	125–129	*	-1.49 ± 0.51	-	-
GridQTL	PC	4	123	122–126	*	0.05 ± 0.05	-	-
GridQTL	HEMA	6	81	79–83	**	-1.9 ± 0.48	-	-
GridQTL	T°	7	61	59–64	*	0.2 ± 0.06	-	-
GridQTL	PC	11	44	43–45	*	-0.09 ± 0.05	-	-
GridQTL	F1	11	44	43–45	*	-0.20 ± 0.10	-	-
GridQTL	LES	18	6	5–10	*	0.23 ± 0.07	-	-
GridQTL	LES	19	19	18–20	**	-0.31 ± 0.08	-	-
GridQTL	HEMA	19	25	20–29	*	1.84 ± 0.50	-	-
GridQTL	PC	19	19	18–20	*	0.18 ± 0.05	-	-
GridQTL	F1	19	19	18–28	*	0.37 ± 0.11	-	-
GridQTL	WG	22	0	0–1	*	5.22 ± 1.76	-	-
GridQTL	F1	22	8	0–11	*	0.33 ± 0.10	-	-
GridQTL	LES	24	4	2–6	*	0.21 ± 0.07	-	-
GridQTL	PC	24	4	2–5	**	-0.10 ± 0.05	-	-
GridQTL	F1	24	4	2–5	*	-0.19 ± 0.1	-	-

* = 5% chromosome-wide; ** = 1% chromosome-wide.
^asubstitution effect expressed in trait units (F1 = composite variable in arbitrary units; HEMA = hematocrit level in %; LES = cecal lesion score in arbitrary units; PC = plasma coloration in optical density units; T° = rectal body temperature in °C; WG = body weight gain in %).
^bnumber of alleles associated with high trait values in the Fayoumi line.

ISSN: 1297-9686