[1
]Department of Clinical Veterinary Medicine, College of Veterinary Medicine Northwest
A&F University Yangling Shaanxi China
[2
]Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of
Veterinary Medicine Northwest A&F University Yangling Shaanxi China
[3
]College of Animal Science and Technology Qingdao Agricultural University Qingdao Shandong
China
[4
]Department of Physiology, School of Medicine, College of Medicine Taipei Medical University
Taipei Taiwan
[5
]Graduate Institute of Medical Sciences, College of Medicine Taipei Medical University
Taipei Taiwan
[6
]Department of Preventive Veterinary Medicine, College of Veterinary Medicine Northwest
A&F University Yangling Shaanxi China