Funding for this research was provided by:
Agricultural Science and Technology Innovation Program (ASTIP-IAS04, CAAS-ZDRW202005, ASTIP-IAS-TS-15)
the National Nonprofit Institute Research Grant (Y2020PT02)
the modern agro-industry technology research system (CARS-41)
Received: 11 June 2019
Accepted: 26 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: All experimental procedures involving broilers 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 welfare and ethics committee of the Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS, Beijing, China) with the following reference number: IAS2019-44.
: Not applicable.
: The authors declare that they have no competing interests.