Genetic Parameter Estimates and Principal Component Analysis for Udder Traits of Holstein Cattle in Ningxia
MU Tong, HU Honghong, FENG Xiaofang, TIAN Jia, WEN Wan, ZHANG Juan, GU Yaling
Acta Veterinaria et Zootechnica Sinica . 2021, (4): 954 -966 .  DOI: 10.11843/j.issn.0366-6964.2021.04.011