Abstract:he present study was designed to investigate the effect of light regimens and vitamin D3 levels on growth performance and some carcass traits of broiler chickens. Two hundred and seventy birds were randomly assigned in factorial design (3x3). Three light regimens (24 hrs continues light, 12 hrs continues with 12 hrs flashlight and 24 hrs flashlight) and three vitamin D3 levels (0, 200 and 400 IU). Nine treatments of 30 birds each (three replicates of 10 birds each). The birds were housed in floor pens from day… Show more
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