A total number of 150 male Ross 308 day-old broiler chicks were used to assess the effects of magnetizing drinking water on broilers performance. Thus, an experiment was conducted as 3 treatments with 5 replicates of 10 birds each. The control birds consumed an ordinary tap water. One minute and three hours magnetized water by 0.65 Tesla magnetic field was the second and the third experimental treatments. Magnetiziation of drinking water did not have a pronounced effect on the pH of crop and ileum contents, thigh meat, gastrointestinal passage rate and excreta wetness at 21 day of age. In addition, the pH of crop and thigh meat, pH and relative humidity of litter contents and viscosity of jejunal supernatant at 41 day of age were not influenced by experimental treatments. Magnetized water did not have a pronounced impact on apparent fecal digestibility of dry and organic matter, and crude protein and population of lactobacillus and coliforms in jejunal contents at 21 day of age. The activity of aspartate aminotransferase (AST) in serum of broilers that drank magnetized water significantly decreased, but cholesterol, triglycerids, calcium, phosphorus, and alanine aminotransferase (ALT) were not influenced by magnetized water. The relative weights and lenghts of intestinal parts at 21 and 41 day of age were not significantly affected by treatments. Muscularis thickness of small intestine increased significatly by magnetized water both at 21 and 41 day of age. Villus height of jejunum significantly increased, but villus width significantly decreased in birds that drank one-minute magnetized water at 21 day of age. However villus surface area, crypt depth and villus height to crypt depth ratio were not significantly affected by experimental treatments at 21 and 41 day of age. Furthermore, weight, volume, density, length, diameter, and ash of right femur and tibia at 21 and 41 day of age were not influence by megnetized water. In conclusion, magnetized drinking water may influence liver function enzyme and gut physiology in broiler chickens.

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