2018-01-252018-01-251995SAKOMURA, Nilva Kazue; SILVA, Giane Serafim; CAFÉ, Marcos Barcellos; ROSTAGNO, Horácio Santiago. Disponibilidade biológica relativa do fósforo dos fosfatos de rocha bruto e parcialmente defluorizado, para galinhas poedeiras. Revista Brasileira de Zootecnia, Viçosa, v. 24, n. 4, p. 599-614, 1995.e- 1806-9290http://repositorio.bc.ufg.br/handle/ri/13516This experiment was carried out at poultry station of Facul­dade de Ciências Agrárias e Veteriná­rias de Jaboticabal- UNESP, lasting 224 days (8 periods of 28 days), with the aim to study Phosphorus biological availability of Raw Rock phosphate (RRP) and of partially Defluorinated Rock phosphate (PDP), to laxing bens two hundreds and ten laying bens from Hy-Line strain, aged 31 weeks at the beginning of the experiment were used. The experiment design was blocks at random, with 7 treatments, 5 repetions, 6 birds per each plot. Toe relative available Phosphorus of phosphates was determinated by tecnique slop - ration. The bens fed diets containing raw rock phosphate and partially defluorinated rock had worst performance than birds fed dicalcium phosphate. The mean values of Phosphorus biological availability were 41,80% and 17,83% for raw rock phosphate and partially defluorinated rock phosphate, respectively.porAcesso AbertoDisponibilidade do fósforoFosfato de rochaFosfato parci­almente defluorizadoGalinha poedeiraAvailability of PhosphorusLaxing henPartially defluorinated phosphateRaw rock phosphateArtigo