Research Progress of Early Pregnancy Diagnosis in Dairy Cows
WEI Shihao, DAI Tianshu, WANG Feng, SHI Yuangang, MA Yun, DAN Xingang
Acta Veterinaria et Zootechnica Sinica . 2022, (7): 2047 -2056 .  DOI: 10.11843/j.issn.0366-6964.2022.07.002