الفهرس 
Study the effect of zeolite on physiological responses and productive performance of laying hens under desert conditions
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Abstract
This study conducted to investigate the effects of dietary zeolite on egg production, egg quality and blood constituents of laying hens under drinking saline well water conditions of South Sinai. A total number of 180 Golden Montazh hens (22- weeks old and body weight of 1629.72 ± 23.54 g) were randomly divided into six equal groups (30 hens / group). 1st group, hens drank tap water and fed basal diet.The 2nd group, hens drank tap water and fed diet containing 2 % zeolite. The 3rd group, hens drank tap water and fed diet containing 4 % zeolite. 4th group, hens drank saline well water and fed basal diet. 5th group, hens drank saline well water and fed diet containing 2 % zeolite. 6th group, hens drank saline well water and fed diet containing 4 % zeolite. Red blood cells and hemoglobin were significant lower in the hens of 4th group compared to other treatments. MCV was significantly increased in the hens of 4th group when compared to the hens of 1st group, hens drank tap water and fed diet containing 2 % zeolite (2nd group) and hens drank tap water and fed diet containing 4 % zeolite (3rd group). MCHC was significantly decreased in the hens of 4th group as compared to the hens drank tap water (1st group), hens drank tap water and fed diet containing 2 % zeolite (2nd group), hens drank tap water and fed diet containing 4 % zeolite (3rd group) and hens drank saline well water and fed diet containing 2 % zeolite (5th group). Hens of 4th group showed significant decrease in total protein, globulin, glucose and total antioxidant capacity concentrations as compared to the hens of 1st and 2nd groups