Xu, Xinxin
Xu, Yaohui
Miao, Shuang
Jiang, Pan
Cui, Junsheng
Gong, Yanshan
Tan, Panpan
Du, Xiaoli
Islam, Nazrul
Hu, Qinghai
Funding for this research was provided by:
National Natural Science Foundation of China (31772770, 31472224, 31272590 and 31072156)
Article History
Received: 5 August 2019
Revised: 21 November 2019
Accepted: 3 December 2019
First Online: 21 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: Ducklings were housed in cages under a 12-h light/dark cycle with free access to food and water. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. The protocol was approved by the Committee on the Ethics of Animal Experiments of Shanghai Veterinary Research Institute, the Chinese Academy of Agricultural Sciences (Permit Number: 15–12).