How to cite this article:
N. Ziaei, M. Shivazad, S.A. Mirhadi and A. Gerami, 2009. Effects of Reduced Calcium and Phosphorous Diets Supplemented with Phytase on Laying Performance of Hens. Pakistan Journal of Biological Sciences, 12: 792-797. DOI: 10.3923/pjbs.2009.792.797 URL: https://scialert.net/abstract/?doi=pjbs.2009.792.797
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