Funding for this research was provided by:
Agricultural Science and Technology Innovation Program (ASTIP-IAS04; ASTIP-IAS-TS-15)
National Key Technology R&D Program (2015BAD03B03)
the earmarked fund for the modern agro-industry technology research system (CARS-41)
National Nonprofit Institute Research Grant (2017ywf-zd-2)
Text and Data Mining valid from 2019-05-22
Received: 21 July 2018
Accepted: 25 April 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: All experimental procedures with chickens were performed according to the Guidelines for Experimental Animals established by the Ministry of Science and Technology (Beijing, China). Ethical approval on animal survival was given by the animal ethics committee of the Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS, Beijing, China) with the following reference number: IASCAAS-AE-03.
: Not applicable.
: The authors declare that they have no competing interests.
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