The Effects of Combination of Citric Acid and Microbial Phytase on the Concentration of Some Minerals of Serum and Parameters of Mineralization of Tibia in Commercial Laying Hens

Yahya Ebrahim Nezhad, Naser Maheri Sis, Abolfazl Aghajanzadeh Gholshani, Yaghob Saedi and Reza Aminvakili

Asian Journal of Animal and Veterinary Advances 3 ( 5 ): 375 - 380 , 2008