Zali A, Nik-Khah A, Shahneh AZ, Rezayazdi K, Ganjkhanlou M. Effect of Zinc from Zinc Sulfate on Ewes` Weight, Milk Yield, Zn Concentrations in Serum and Serum Alkaline Phosphates Activity of Varamini Ewes. Pak. J. Nutr. 2008;7(4):578–581. doi:10.3923/pjn.2008.578.581