作者机构:[1]State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
相关基金:supported by the National Natural Science Foundation of P.R.China( No .30800790and No .30430520);the National Transgenic Major Project (2009ZX08009-116B);Doctoral Program Foundation of Institutions of High-er Education of China (No .200800191018)