Effects of supplemental level on serum biochemical indexes and body weight of Gansu Alpine Merino lambs

• Yong Zhang, 
• Wu-jun Guo, 
• Xiao-mei Li, 
• Chang-ji Zhang, 
• Shu-ru Cheng, 
• Xu-yin Gong, 
• Ping Tian, 
• Li-ping Zhang