Alexander L J, Geary T W, Snelling W M, Macneil M D
USDA-ARS, Miles City, MT 59301, USA.
Anim Genet. 2007 Aug;38(4):413-6. doi: 10.1111/j.1365-2052.2007.01616.x. Epub 2007 Jun 26.
A whole-genome scan for carcass traits [average daily gain during the pre-weaning, growth and finishing periods; birth weight; hot carcass weight and longissimus muscle area (LMA)] was performed on 328 F(2) progeny produced from Wagyu x Limousin-cross parents derived from eight founder Wagyu bulls. Nine significant (P </= 0.05) and four suggestive (P </= 0.1) QTL affecting seven growth and carcass traits were identified. Significant QTL were located on bovine chromosomes 2, 4, 7, 9, 12, 16, 17 and 29. A QTL previously reported on chromosome 2 for LMA was also detected in this study. These results provide insight into genetic differences between the Wagyu and Limousin breeds.
对由8头和牛种公牛繁育而来的和牛与利木赞牛杂交亲本所产生的328头F(2)代后代进行了胴体性状的全基因组扫描[断奶前、生长和育肥期的平均日增重；出生体重；热胴体重和背最长肌面积（LMA）]。鉴定出9个影响7种生长和胴体性状的显著（P≤0.05）QTL和4个暗示性（P≤0.1）QTL。显著QTL位于牛的2号、4号、7号、9号、12号、16号、17号和29号染色体上。本研究中还检测到先前报道的位于2号染色体上影响LMA的一个QTL。这些结果为了解和牛与利木赞牛品种之间的遗传差异提供了依据。
