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Revista Científica

versión impresa ISSN 0798-2259

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HERNANDEZ, Glenn; GODOY, Susmira  y  CHICCO, Claudio F.. Cereal Phosphorus Bio-Availability in Chicks. Rev. Cient. (Maracaibo) [online]. 2006, vol.16, n.2, pp.149-154. ISSN 0798-2259.

In growing chicks, phosphorus bioavailability of wheat, corn and sorghum grains was determined by the slope relation between the regression equations of reference diets, with increasing levels of inorganic phosphorus, and those of the cereals. Phosphorus intake was used as independent variable, for references diets, and feed intake, for wheat, corn or sorghum diets, and tibia bone ash of 4 week old chicks as dependent variable. Weight (g) and bone ash (%) content were higher (P < 0.05) for wheat (1020; 43.6), intermediate for corn (823; 30.44) and lower for sorghum (655; 28.97). Body weight (g) gain and bone ash (%) were greater (P < 0.05) for each increasing levels of inorganic phosphorus (0.25, 0.35, 0.45%) of the reference diets. Regressions and correlations between phosphorus intake and bone ash were significant (P < 0.05) for cereal and reference diets. According the slope relation of the regression equations, phosphorus bioavailability values of wheat, corn and sorghum were 26.66, 24.67 and 23.0% respectively.

Palabras clave : Phosphorus; bioavailability; cereals; poultry.

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