Milk feeding quantity and feeding frequency: effects on growth performance, rumen fermentation and blood metabolites of Holstein dairy calves oleh Azam Jafari, Arash Azarfar, Gibson M. Alugongo, Gholam R. Ghorbani, Mehdi Mirzaei, Amir Fadayifar, Hossein Omidi-Mirzaei, Zhijun Cao, James K. Drackley, Morteza Hossieni Ghaffari