[Liu, Jing-Cai; Lai, Fang-Nong; Ge, Wei; Sun, Xiao-Feng; Shen, Wei; Li, Lan; Cheng, Shun-Feng; Wang, Yu-Feng] Qingdao Agr Univ, Inst Reprod Sci, Coll Anim Sci & Technol, Qingdao 266109, Peoples R China.
[Li, Ling] Tengzhou Peoples Hosp, Tengzhou 277500, Peoples R China.
[Sun, Xiao-Feng] Qingdao Agr Univ, Coll Life Sci, Qingdao 266109, Peoples R China.
[Zhang, Xi-Feng] Wuhan Polytech Univ, Coll Biol & Pharmaceut Engn, Wuhan 430023, Hubei, Peoples R China.
[De Felici, Massimo] Univ Roma Tor Vergata, Dept Biomed & Prevent, I-00133 Rome, Italy.