عنوان مقاله [English]
This study was conducted to evaluate the bioavailability of nano and micro sources of manganese in broiler chickens. Two hundred and eight, 10-d-old male Ross 308 broilers in a completely randomized design with 13 treatments, 4 replications and 4 chicks per replicate were studied for 35 days. During the experimental period, a basal corn-soybean meal diet containing 20 ppm Mn (control treatment) was supplemented with 70, 120, and 170 mg/Kg, Mn as graded levels, from four different sources (nano manganese oxide, carbonate and sulfate and micro manganese sulfate) and fed ad libitum. Results indicated that in comparison with micro MnSO4, nano manganese increased bone breaking strength significantly (P<0.01). The bioavailability of different sources of nano manganese in comparison to micro MnSO4 was higher significantly (P<0.01). The bioavailability of nano manganese sulfate, Carbonate and Oxide in comparison to micro manganese sulfate, on the basis of bone manganese content, was 324, 158 and 125 percent respectively. In conclusion, nano manganese had the substitutability of micro manganese sulfate in broilers diet to reduce leg abnormalities with no negative effect on performance.
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