Serum metabolome

Chinese Holstein cows (n = 180) were collected from an anonymous commercial farms in May, 2024 by coagulant tubes for serum separation.180头中国荷斯坦奶牛（Chinese Holstein cows，n=180）的样本于2024年5月取自某匿名商业牧场，采集过程采用血清分离促凝管完成血液采集与血清分离操作。