Chegini, Arash, Navid Ghavi Hossein-Zadeh, and Hossein Hosseini-Moghadam. 2015. “Effect of Calf Sex on Some Productive, Reproductive and Health Traits in Holstein Cows”. Spanish Journal of Agricultural Research 13 (2), e0605. https://doi.org/10.5424/sjar/2015132-6320.