Adding oregano essential oil to diet changed the muscle quality and composition and content of fatty acids and amino acids in Pingliang red cattle

• LI Nuanxin, 
• ZHANG Rui, 
• BAI Yunpeng, 
• CHENG Qiang, 
• ZHANG Xiaoqiang, 
• JIA Li, 
• LI Jialong, 
• LEI Zhaomin