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Phosphorus characterization in feces from broiler chicks fed low-phytate barley diets

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dc.contributor.author Leytem, April B. en
dc.contributor.author Thacker, Phil A. en
dc.contributor.author Turner, Benjamin L. en
dc.date.accessioned 2011-02-28T13:13:12Z
dc.date.available 2011-02-28T13:13:12Z
dc.date.issued 2007
dc.identifier.citation Leytem, April B., Thacker, Phil A., and Turner, Benjamin L. 2007. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F12898">Phosphorus characterization in feces from broiler chicks fed low-phytate barley diets</a>." <em>Journal of the science of food and agriculture</em>. 87:1495&ndash;1501. en
dc.identifier.uri http://hdl.handle.net/10088/12898
dc.description.abstract The inclusion of low phytate grains in poultry diets can reduce the phosphorus (P) content of poultry feces, but their influence on fecal P composition is not well established. To assess this, 100 male broiler chicks (21 days old) were fed dietary treatments based on either a wild-type barley or one of three low phytate mutant barleys with 59, 62 and 99% reductions in phytate P, compared with the normal barley diet. The birds were housed in raised-floor battery cages with mesh grate floors above fecal collection trays with five birds per pen and five pens per treatment. The birds were fed for 9 days and feces were collected twice a day during the last 2 days of the experiment. Total P concentrations were 14-24% lower in feces from birds fed low phytate barley diets compared with those fed the normal barley diet. Phosphorus digestibility increased (P &lt; 0.05) as phytate in the barley diet decreased. Phosphate was the major P fraction in the feces (69-75% extracted P) regardless of the type of barley fed. Phytate constituted only 3-12% of the P in the feces, indicating its hydrolysis in the bird. Overall, these results suggest that feeding low-phytate barley diets can reduce P concentrations in poultry feces without causing significant changes in P composition. en
dc.relation.ispartof Journal of the science of food and agriculture en
dc.title Phosphorus characterization in feces from broiler chicks fed low-phytate barley diets en
dc.type Journal Article en
dc.identifier.srbnumber 55578
rft.jtitle Journal of the science of food and agriculture
rft.volume 87
rft.spage 1495
rft.epage 1501
dc.description.SIUnit Encyclopedia of Life en
dc.description.SIUnit Forces of Change en
dc.description.SIUnit STRI en
dc.description.SIUnit filename_problems en
dc.citation.spage 1495
dc.citation.epage 1501


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