TY  - JOUR
T1  - The Effects of Combination of Ethylenediaminetetraacetic Acid and Microbial Phytase on the Egg Quality Characteristics in Laying Hens
AU - , Yahya Ebrahim-Nezhad AU - , Jamshid Gyasi-Gale Kandi 
JO  - Journal of Animal and Veterinary Advances
VL  - 7
IS  - 2
SP  - 213
EP  - 216
PY  - 2008
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2008.213.216
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2008.213.216
KW  - Ethylenediaminetetraacetic acid
KW  -microbial phytase
KW  -laying hens
KW  -egg
KW  -available phosphorus
AB  - This experiment was carried out in order to survey the combination effect of Ethylenediamine-tetraacetic Acid (EDTA) and microbial phytase on the egg quality characteristics in commercial laying hens of Hy-line (W-36) strain in 53-64 week of age. In this experiment 192 laying hens were examined. The experimental design was completely randomized design with a 3×2 factorial arrangement with three levels (0.0, 0.1 and 0.2%) of ethylenediaminetetraacetic acid and 2 levels (0.0 and 300 FTU kg <SUP>1</SUP>) of microbial phytase in low available phosphorus diets with 6 treatments, 4 replicates and 8 hens in each replicate. The criteria used to assess were specific gravity, eggshell thickness, Hough unit, eggshell weight and eggshell ash. The results showed that interaction effect of ethylenediaminetetraacetic acid × phytase on specific gravity, Hough unit and eggshell weight was significant (p&lt;0.05). Adding of ethylenediaminetetraacetic acid to low available phosphorus diets had not influence on the egg quality characteristics in laying hens. Phytase addition in low available phosphorus diets, increased eggshell weight and eggshell thickness significantly (p&lt;0.05). Also, phytase addition in low available phosphorus diet did not improve eggshell ash.
ER  -