Acknowledgement
The authors thank Fuchuan Inner Mongolia Farming Polytron Technologies Inc. for providing access to the experimental site. This work was supported by the Gansu Agricultural University Research Innovation Fund-Publicly recruited doctoral research start-up fund, under Grand number GAU-KYQD-2020-34, and Inner Mongolia Agricultural University "Double first class" talent cultivation program, under Grand number NDSC2018-03 and the Key Grant for Special for College of Animal Science in Inner Mongolia Agricultural University, under Grand number BZCG201902.
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