Dietary requirements of available phosphorus in growing broiler chickens at a constant calcium: available phosphorus ratio

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dc.creatorMello, Heloisa Helena de Carvalho
dc.creatorGomes, Paulo Cezar
dc.creatorRostagno, Horacio Santiago
dc.creatorAlbino, Luiz Fernando Teixeira
dc.creatorRocha, Tatiana Cristina da
dc.creatorAlmeida, Rodrigo Lopes de
dc.creatorCalderano, Arele Arlindo
dc.date.accessioned2020-03-24T14:37:30Z
dc.date.available2020-03-24T14:37:30Z
dc.date.issued2012
dc.description.abstractFour experiments were conducted to study the requirements of available phosphorus (aP) for commercial male broilers of 1-10 day of age (exp.1), 11-21 days of age (exp. 2), 22-33 day of age (exp. 3) and 34-46 days of age (exp. 4), at a constant calcium:aP ratio. A complete randomized design was used in each experiment. The experimental diets were fed ad libitum to 8 replicate groups of ten broilers in each. The increments in the levels of aP ranged from 2.0 to 5.5 g/kg (exp. 1), 1.9 to 5.4 g/kg (exp. 2), 1.8 to 5.3 g/kg (exp. 3) and 1.7 to 5.2 g/kg (exp. 4), in 0.7 g/kg. The parameters evaluated were body weight gain, feed intake, feed conversion ratio and bone parameters. The level of aP in the diet influenced the performance of broilers of 1-10 and 11-21 days of age, but did not affect the performance of broilers at 22-33 and 34-46 days of age. Feed intake was not affected. The requirements of aP and Ca for male broilers from 1-10, 11-21, 22-33 and 34-46 days of age are 4.82 and 9.64 g/kg, 4.10 and 8.20 g/kg, 3.95 and 7.90 g/kg and 3.19 g.kg and 6.38 g/kg, respectively. The results indicate that low levels aP were required because the requirements of the mineral reduced as birds aged. Provided there is no excess of dietary levels of Ca, using a Ca:aP ratio of 2:1 may reduce the dietary levels of aP.pt_BR
dc.identifier.citationMELLO, Heloisa Helena de Carvalho et al. Dietary requirements of available phosphorus in growing broiler chickens at a constant calcium: available phosphorus ratio. Revista Brasileira de Zootecnia, Viçosa, v. 41, n. 11, p. 2323-2328, 2012.pt_BR
dc.identifier.doi10.1590/S1516-35982012001100004
dc.identifier.issne- 1806-9290
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/18907
dc.language.isoengpt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentEscola de Medicina Veterinária e Zootecnia - EVZ (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectChickspt_BR
dc.subjectDietspt_BR
dc.subjectMineralpt_BR
dc.subjectPerformancept_BR
dc.subjectTibiapt_BR
dc.titleDietary requirements of available phosphorus in growing broiler chickens at a constant calcium: available phosphorus ratiopt_BR
dc.typeArtigopt_BR

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