Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/19976
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dc.contributor.authorMorgan, Natalieen
dc.contributor.authorWalk, C Len
dc.contributor.authorBedford, M Ren
dc.contributor.authorBurton, E Jen
dc.date.accessioned2017-02-13T11:27:00Z-
dc.date.issued2015-
dc.identifier.citationPoultry Science, 94(7), p. 1577-1583en
dc.identifier.issn1525-3171en
dc.identifier.issn0032-5791en
dc.identifier.urihttps://hdl.handle.net/1959.11/19976-
dc.description.abstractThere is little consensus as to the capability of poultry to utilize dietary phytate without supplemental phytase. Therefore, an experiment was conducted to examine the extent to which endogenous phytase of intestinal and cereal origin contributes to phytate degradation in birds aged 0 to 14 d posthatch. Ross 308 broilers (n = 720) were fed one of 4 experimental diets with differing dietary ingredient combinations and approximate total phytate levels of 10 g/kg, dietary phytase activity analyzed at 460 U/kg, dietary calcium (Ca) levels of 11 g/kg, and nonphytate-phosphorus (P) levels of 4 g/kg. Broiler performance, gizzard, duodenum, jejunum and ileum pH, Ca and P digestibility and solubility, amount of dietary phytate hydrolyzed in the gizzard, jejunum, and ileal digesta phytase activity were analyzed at d 4, 6, 8, 10, 12, and 14 posthatch. Intestinal endogenous phytase activity increased significantly (P < 0.001) between d 4 and 6, resulting in increased phytate hydrolysis in the gizzard (P = 0.003), jejunum (P < 0.001), and ileum (P < 0.001). Phytase activity and phytate hydrolysis continued to increase with age, with a greater phytase activity and associated increase in phytate hydrolysis and mineral utilization between d 10 and 12. Gizzard and jejunum Ca and P solubility and ileal Ca and P digestibility increased significantly (P < 0.001), and gastrointestinal pH decreased significantly (P < 0.001) between d 4 and 6. By d 14, phytase activity recovered in the ileum was approximately 45 U/kg. There were strong correlations between phytase activity measured in the ileum and phytate hydrolyzed in the gizzard (r = 0.905, P < 0.001), jejunum (r = 0.901, P = 0.023), and ileum (r = 0.938, P = 0.042). This study shows intestinal- and dietary-derived endogenous phytase activity is responsible for phytate-P hydrolysis in broilers.en
dc.languageenen
dc.publisherOxford University Pressen
dc.relation.ispartofPoultry Scienceen
dc.titleContribution of intestinal- and cereal-derived phytase activity on phytate degradation in young broilersen
dc.typeJournal Articleen
dc.identifier.doi10.3382/ps/pev108en
dcterms.accessRightsGolden
dc.subject.keywordsAnimal Nutritionen
local.contributor.firstnameNatalieen
local.contributor.firstnameC Len
local.contributor.firstnameM Ren
local.contributor.firstnameE Jen
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008839999 Animal Production and Animal Primary Products not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailnmorga20@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20170210-115324en
local.publisher.placeUnited States of Americaen
local.format.startpage1577en
local.format.endpage1583en
local.identifier.scopusid84936803435en
local.peerreviewedYesen
local.identifier.volume94en
local.identifier.issue7en
local.access.fulltextYesen
local.contributor.lastnameMorganen
local.contributor.lastnameWalken
local.contributor.lastnameBedforden
local.contributor.lastnameBurtonen
dc.identifier.staffune-id:nmorga20en
local.profile.orcid0000-0002-9663-2365en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:20175en
dc.identifier.academiclevelAcademicen
local.title.maintitleContribution of intestinal- and cereal-derived phytase activity on phytate degradation in young broilersen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorMorgan, Natalieen
local.search.authorWalk, C Len
local.search.authorBedford, M Ren
local.search.authorBurton, E Jen
local.uneassociationUnknownen
local.year.published2015en
local.subject.for2020300303 Animal nutritionen
local.subject.seo2020109999 Other animal production and animal primary products not elsewhere classifieden
Appears in Collections:Journal Article
School of Environmental and Rural Science
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