Abstract:The objective was to evaluate the effect of dietary 25-hydroxycholecalciferol (25(OH)D 3 ) or vitamin D 3 (VitD 3 ) and different total calcium (Ca) levels on the performance, carcass characteristics, blood, enzymatic, and bone biochemistry of broilers reared under heat stress between 1 and 42 days of age. A total of 504 male, Cobb 500, broiler chickens were distributed in a completely randomized design in a 2 × 4 factorial arrangement (VitD 3 or 25(OH)D 3 × four Ca levels (100, 90, 80 and 70% of the recommend… Show more
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