Genetic determinism of bone and mineral metabolism in meat-type chickens: A QTL mapping study.

ABSTRACT: Skeletal integrity in meat-type chickens is affected by many factors including rapid growth rate, nutrition and genetics. To investigate the genetic basis of bone and mineral metabolism, a QTL detection study was conducted in an intercross between two lines of meat-type chickens divergently selected for their high (D +) or low (D -) digestive efficiency. Tibia size (length, diameter, volume) and ash content were determined at 3 weeks of age as well as phosphorus (P) retention and plasma concentration. Heritability of these traits and their genetic correlations with digestive efficiency were estimated. A QTL mapping study was performed using 3379 SNP markers. Tibia size, weight, ash content and breaking strength were highly heritable (0.42 to 0.61). Relative tibia diameter and volume as wel

SUBMITTER: Mignon-Grasteau S 

PROVIDER: S-EPMC4926819 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature