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© 2017 Shiping Bai, Gu Jin, Delong Li, Xuemei Ding, Jianping Wang, Keying Zhang, Qiufeng Zeng, Fengjie Ji, Junmei Zhao, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.