This work was supported by the National Natural Science Foundation for Distin-guished Young Scholars(Grand No.30025003);the National Key Basic Research Program(Grant No.G200001603);the Hi-Tech Research and Development Program of China(Grand No.2001AA24301l).
A Chinese Holstein population with daughter design was analyzed using 14 microsatellites covering a map distance of 55.7 cM on chromosome 6 to fine map QTL for five milk production traits. 26 paternal half-sib familie...