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Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus.
Poult Sci. 2008 Mar; 87(3):449-58.PS

Abstract

Phytate P utilization from soybean meal (SBM) included in broiler diets has been shown to be poor and highly dependent on dietary Ca intake. However, the effect of Ca on P utilization and on the optimal ratio of Ca to nonphytate P (Ca:NPP) when diets contained varying levels of phytate has not been clearly shown and was the objective of this research. A factorial treatment structure was used with 4 dietary Ca levels from 0.47 to 1.16% and 3 levels of phytate P (0.28, 0.24, and 0.10%). Varying dietary phytate P levels were obtained by utilizing SBM produced from 3 varieties of soybeans with different phytate P concentrations. Ross 508 broiler chicks were fed 1 of 12 diets from 16 to 21 d of age. Excreta were collected from 16 to 17 d and from 19 to 20 d of age and ileal digesta was collected at 21 d of age. Apparent prececal P digestibility decreased when dietary Ca concentration increased and was higher when diets contained low-phytate SBM. The apparent digestibility of Ca and percentage of phytate P hydrolysis at the distal ileum were not reduced when dietary phytate P concentration increased. Including low-phytate SBM in diets reduced total P output in the excreta by 49% compared with conventional SBM. The optimum ratio of Ca:NPP that resulted in the highest P retention and lowest P excretion was 2.53:1, 2.40:1, and 2.34:1 for diets with 0.28, 0.24, and 0.10% phytate P. These data suggested that increased dietary Ca reduced the extent of phytate P hydrolysis and P digestibility and that the optimum Ca:NPP ratio at which P retention was maximized was reduced when diets contained less phytate P.

Authors+Show Affiliations

Department of Poultry Science, North Carolina State University, Raleigh 27695-7608, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18281570

Citation

Plumstead, P W., et al. "Interaction of Calcium and Phytate in Broiler Diets. 1. Effects On Apparent Prececal Digestibility and Retention of Phosphorus." Poultry Science, vol. 87, no. 3, 2008, pp. 449-58.
Plumstead PW, Leytem AB, Maguire RO, et al. Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus. Poult Sci. 2008;87(3):449-58.
Plumstead, P. W., Leytem, A. B., Maguire, R. O., Spears, J. W., Kwanyuen, P., & Brake, J. (2008). Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus. Poultry Science, 87(3), 449-58. https://doi.org/10.3382/ps.2007-00231
Plumstead PW, et al. Interaction of Calcium and Phytate in Broiler Diets. 1. Effects On Apparent Prececal Digestibility and Retention of Phosphorus. Poult Sci. 2008;87(3):449-58. PubMed PMID: 18281570.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus. AU - Plumstead,P W, AU - Leytem,A B, AU - Maguire,R O, AU - Spears,J W, AU - Kwanyuen,P, AU - Brake,J, PY - 2008/2/19/pubmed PY - 2008/4/29/medline PY - 2008/2/19/entrez SP - 449 EP - 58 JF - Poultry science JO - Poult. Sci. VL - 87 IS - 3 N2 - Phytate P utilization from soybean meal (SBM) included in broiler diets has been shown to be poor and highly dependent on dietary Ca intake. However, the effect of Ca on P utilization and on the optimal ratio of Ca to nonphytate P (Ca:NPP) when diets contained varying levels of phytate has not been clearly shown and was the objective of this research. A factorial treatment structure was used with 4 dietary Ca levels from 0.47 to 1.16% and 3 levels of phytate P (0.28, 0.24, and 0.10%). Varying dietary phytate P levels were obtained by utilizing SBM produced from 3 varieties of soybeans with different phytate P concentrations. Ross 508 broiler chicks were fed 1 of 12 diets from 16 to 21 d of age. Excreta were collected from 16 to 17 d and from 19 to 20 d of age and ileal digesta was collected at 21 d of age. Apparent prececal P digestibility decreased when dietary Ca concentration increased and was higher when diets contained low-phytate SBM. The apparent digestibility of Ca and percentage of phytate P hydrolysis at the distal ileum were not reduced when dietary phytate P concentration increased. Including low-phytate SBM in diets reduced total P output in the excreta by 49% compared with conventional SBM. The optimum ratio of Ca:NPP that resulted in the highest P retention and lowest P excretion was 2.53:1, 2.40:1, and 2.34:1 for diets with 0.28, 0.24, and 0.10% phytate P. These data suggested that increased dietary Ca reduced the extent of phytate P hydrolysis and P digestibility and that the optimum Ca:NPP ratio at which P retention was maximized was reduced when diets contained less phytate P. SN - 0032-5791 UR - https://www.unboundmedicine.com/medline/citation/18281570/Interaction_of_calcium_and_phytate_in_broiler_diets__1__Effects_on_apparent_prececal_digestibility_and_retention_of_phosphorus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0032-5791(19)39270-3 DB - PRIME DP - Unbound Medicine ER -