Mapping quantitative trait loci (QTL) in sheep. IV. Analysis of lactation persistency and extended lactation traits in sheep

Table 3 Results of the QTL analysis using QTL-MLE

OAR	Trait	Position		LOD	QTL effect
		QTL [CI] in cM	Marker		Est	SD
2	Extended lactation somatic cells	175 [157-184]	TGLA10-BM81124	1.9*	-0.04	-0.55
3	Fat persistency	76 [62-83]	BM8118-BMS710	2.8**	-0.09	-0.60
4	Somatic cells persistency	146.6 [131-147]	OARHH35-MCM73	2*	-0.04	-0.49
8	Extended lactation lactose	116.4 [77-123]	BM3215-BMS1967	1.9*	-0.18	-0.55
9	Extended lactation fat	154 [136-154]	BM4513-RJH1	1.9*	0.09	0.48
10	Extended lactation somatic cells	39.9 [28-55]	MNS64-OARHH41	2.2**	0.04	0.58
11	Extended lactation milk	39.3 [29-58]	HEL10-BM17132	2.6**	-0.09	-0.64
11	Milk persistency	32.3 [29-50]	HEL10-BM17132	3.4***	-0.09	-0.64
11	Extended lactation protein	29.3 [29-45]	HEL10-BM17133	3**	0.14	0.59
21	Extended lactation lactose	19 [0-49]	BMC2228-CSSM013	2*	0.23	0.69
24	Protein persistency	6.1 [5-30]	OARJMP29-BMS744	2*	0.07	0.49

Information of the average QTL position (QTL) and 1-LOD drop-off confidence interval (CI) in cM; flanking markers of the peak; LOD score with respective significance level [*suggestive QTL (1.7 ≤ LOD < 2.0), **significant QTL (2.0 ≤ LOD < 3.0), ***highly significant QTL (LOD ≥ 3.0)]; estimated QTL effect (Est) and standardised QTL effect (SD) [estimated effect difference (Awassi-Merino) relative to the estimated phenotypic standard deviation] are presented.

ISSN: 1297-9686