Supplement of 1,25-dihydroxycholecalciferol and reduction of calcium and available phosphorus in broiler chickens

C.S. Souza F.M. Vieites C.H.F. Vasconcellos A.A. Calderano R.V. Nunes C.M. Ferreira T.V.S. Pereira G.H.K. Moraes About the authors

There were evaluated the performance, the carcass yield and noble cuts yield of broilers with supplement of 1,25-dihydroxycholecalciferol and reduction of calcium and available phosphorus. It was used a randomized block design, with six treatments: 0.0; 1.0; 2.0; 3.0; 4.0 and 5.0µg of active vitamin D3/kg of ration, and six repetitions with 17 birds each. At 8 and 42 days of age each experimental unit was weighted in order to evaluated the performance. Later, four broilers/repetition were removed and slaughtered in order to measure the carcass and noble cuts yield. The inclusion of active vitamin D3 influenced positively (P<0.05) the weight gain and the feed conversion at the supplementations of 1.0 and 2.0µg/kg. The feed intake wasn't significative among the studied levels. The carcass and noble cuts of male broilers at 42 days were not influenced by supplement of 1,25-dihydroxycholecalciferol and reduction of calcium and available phosphorus in rations. It is recommended to provide additional of 1.0 up to 2.0µg/kg of active vitamin D3 in rations for male broilers from 8 to 42 days of age.

poultry; calcitriol; carcass; performance; vitamin D


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