Effects of back fat, growth rate, and age at first mating on Yorkshire and Landrace sow longevity in China
HU Bin, MO De-lin, WANG Xiao-ying, LIU Xiao-hong, CHEN Yao-sheng
Journal of Integrative Agriculture . 2016, (12): 2809 -2818 .  DOI: 10.1016/S2095-3119(16)61381-3