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History
- January 18, 2017.
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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
Author Information
- 1College of Animal Science & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
- 2Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi, 030006, China
- ↵*To whom correspondence should be addressed. Tel: +86-029-87092102; E-mail: xukunas{at}nwsuaf.edu.cn.