Detection of QTL controlling digestive efficiency and anatomy of the digestive tract in chicken fed a wheat-based diet

Table 4 QTL detected for digestive efficiency

Chromosome	Trait¹	Position (cM)	CI²	LRT value³	Level of significance		QTL effect⁴(NF⁵)
Chromosome	Trait¹	Position (cM)	CI²	LRT value³	Chromosome-wide	Genome-wide	QTL effect⁴(NF⁵)
16	AMEn	0⁶	-	15.43	0.038	>0.20	0.17 (4)
	CDUDM	0⁶	-	16.57	0.029	>0.20	0.18 (4)
	CDUS	0⁶	-	15.01	0.041	>0.20	0.16 (5)
	CDUP	0⁶	-	18.53	0.012	>0.20	0.20 (4)
20	CDUDM	9	8-10	31.45	<0.0001	0.025	0.40 (5)
20	CDUS	9	8-10	41.60	<0.0001	<0.0001	0.57 (4)
23	CDUS	30	8-35	19.45	0.049	>0.20	0.22 (3)
26	CDUS	36	31-45	20.05	0.041	>0.20	0.20 (3)
27	CDUDM	12	9-17	18.10	0.046	>0.20	0.20 (3)

¹AMEn: metabolisable energy value of diet, corrected to 0 nitrogen retention; CDUDM: coefficient of digestive utilization of dry matter; CDUS: coefficient of digestive utilization of starch; CDUL: coefficient of digestive utilization of lipids; CDUP: coefficient of digestive utilization of proteins; ²1-LOD-drop off confidence interval (lower and upper boundaries, cM); ³Likelihood Ratio Test value; ⁴QTL effect as a proportion of the phenotypic standard deviation of trait; ⁵number of F1 sires families heterozygous for the QTL (P < 0.05, Student test); ⁶QTL located at the telomere.

ISSN: 1297-9686