This work was supported by Project of Science and Technology Department of Hunan Province, China [grant numbers 2017GK4032 ], National Natural Science Foundation of China [grant numbers 31571811 ], and Ausnutria Dairy (China) Co., Ltd .
This work was supported by Project of Science and Technology Department of Hunan Province, China [grant numbers 2017GK4032], National Natural Science Foundation of China [grant numbers 31571811], and Ausnutria Dairy (China) Co. Ltd.