Acknowledgement
This study was supported by grants from the Sichuan Science and Technology Program (2020YFN0024), the Sichuan Innovation Team of Pig (sccxtd-2021-08), Performance Incentive and Guidance Special Project of Scientific Research Organization of Chongqing Science and Technology Committee (cstc2021jxjl8001), Chongqing Special Financial Fund Project (22514C), the National key R&D Program of China #2018YFD0501204, the National Natural Science Foundation of China (31530073, C170102) and the Earmarked fund for the China Agriculture Research System (No. CARS-35-01A).
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