Interaction of Calcium and Phytate in Broiler Diets. 1. Effects on Apparent Prececal Digestibility and Retention of Phosphorus

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...

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Veröffentlicht in:Poultry science 2008-03, Vol.87 (3), p.449-458
Hauptverfasser: Plumstead, P.W, Leytem, A.B, Maguire, R.O, Spears, J.W, Kwanyuen, P, Brake, J
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container_start_page 449
container_title Poultry science
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creator Plumstead, P.W
Leytem, A.B
Maguire, R.O
Spears, J.W
Kwanyuen, P
Brake, J
description 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.
doi_str_mv 10.3382/ps.2007-00231
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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. 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Effects on Apparent Prececal Digestibility and Retention of Phosphorus</title><title>Poultry science</title><addtitle>Poult Sci</addtitle><description>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. 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Effects on Apparent Prececal Digestibility and Retention of Phosphorus</title><author>Plumstead, P.W ; Leytem, A.B ; Maguire, R.O ; Spears, J.W ; Kwanyuen, P ; Brake, J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c420t-7c65af0ca8da149d9274dc2ef34178731ad12e5cd84d7feccf9ee25c30d426853</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Animal Feed</topic><topic>animal nutrition</topic><topic>Animal Nutritional Physiological Phenomena</topic><topic>Animals</topic><topic>broiler chickens</topic><topic>broiler feeding</topic><topic>calcium</topic><topic>Calcium, Dietary - administration &amp; dosage</topic><topic>Calcium, Dietary - pharmacology</topic><topic>cecum</topic><topic>Chickens - growth &amp; development</topic><topic>Chickens - metabolism</topic><topic>dietary minerals</topic><topic>digesta</topic><topic>digestibility</topic><topic>Digestion - drug effects</topic><topic>Dose-Response Relationship, Drug</topic><topic>excreta</topic><topic>excretion</topic><topic>feed rations</topic><topic>Female</topic><topic>Glycine max</topic><topic>hydrolysis</topic><topic>ileum</topic><topic>Ileum - metabolism</topic><topic>intestinal absorption</topic><topic>Intestinal Absorption - drug effects</topic><topic>Male</topic><topic>nutrient availability</topic><topic>nutrient management</topic><topic>Nutritive Value</topic><topic>phosphorus</topic><topic>Phosphorus, Dietary - pharmacokinetics</topic><topic>phytic acid</topic><topic>Phytic Acid - administration &amp; dosage</topic><topic>Phytic Acid - pharmacology</topic><topic>Random Allocation</topic><topic>soybean meal</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Plumstead, P.W</creatorcontrib><creatorcontrib>Leytem, A.B</creatorcontrib><creatorcontrib>Maguire, R.O</creatorcontrib><creatorcontrib>Spears, J.W</creatorcontrib><creatorcontrib>Kwanyuen, P</creatorcontrib><creatorcontrib>Brake, J</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Poultry science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Plumstead, P.W</au><au>Leytem, A.B</au><au>Maguire, R.O</au><au>Spears, J.W</au><au>Kwanyuen, P</au><au>Brake, J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interaction of Calcium and Phytate in Broiler Diets. 1. Effects on Apparent Prececal Digestibility and Retention of Phosphorus</atitle><jtitle>Poultry science</jtitle><addtitle>Poult Sci</addtitle><date>2008-03-01</date><risdate>2008</risdate><volume>87</volume><issue>3</issue><spage>449</spage><epage>458</epage><pages>449-458</pages><issn>0032-5791</issn><eissn>1525-3171</eissn><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. 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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.</abstract><cop>England</cop><pub>Poultry Science Association</pub><pmid>18281570</pmid><doi>10.3382/ps.2007-00231</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Animal Feed
animal nutrition
Animal Nutritional Physiological Phenomena
Animals
broiler chickens
broiler feeding
calcium
Calcium, Dietary - administration & dosage
Calcium, Dietary - pharmacology
cecum
Chickens - growth & development
Chickens - metabolism
dietary minerals
digesta
digestibility
Digestion - drug effects
Dose-Response Relationship, Drug
excreta
excretion
feed rations
Female
Glycine max
hydrolysis
ileum
Ileum - metabolism
intestinal absorption
Intestinal Absorption - drug effects
Male
nutrient availability
nutrient management
Nutritive Value
phosphorus
Phosphorus, Dietary - pharmacokinetics
phytic acid
Phytic Acid - administration & dosage
Phytic Acid - pharmacology
Random Allocation
soybean meal
title Interaction of Calcium and Phytate in Broiler Diets. 1. Effects on Apparent Prececal Digestibility and Retention of Phosphorus
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