Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/29211
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dc.contributor.authorChrystal, Peter Ven
dc.contributor.authorMoss, Amy Fen
dc.contributor.authorYin, Dafeien
dc.contributor.authorKhoddami, Alien
dc.contributor.authorNaranjo, Victor Den
dc.contributor.authorSelle, Peter Hen
dc.contributor.authorLiu, Sonia Yen
dc.date.accessioned2020-08-07T05:22:04Z-
dc.date.available2020-08-07T05:22:04Z-
dc.date.issued2020-03-
dc.identifier.citationAnimal Feed Science and Technology, v.261, p. 1-14en
dc.identifier.isbn03778401-
dc.identifier.issn1873-2216en
dc.identifier.issn0377-8401en
dc.identifier.urihttps://hdl.handle.net/1959.11/29211-
dc.description.abstractMaize-based diets were formulated to contain 208, 193, 179 and 165 g/kg crude protein (CP) were prepared and the last diet was supplemented with 4.33 g/kg glycine equivalents and 1.10 g/ kg threonine, individually and in combination, to provide seven dietary treatments. Each dietary treatment was offered to eight replicate cages (6 birds per cage) of off-sex, male Ross 308 chickens from 7 to 35 days post-hatch. The transition from 208 to 165 g/kg CP diets numerically compromised weight gain and feed conversion ratios (FCR) by 5.41% and 3.44%, respectively, and linearly increased relative fat-pad weights from 7.62 to 13.31 g/kg. The same transition linearly increased ileal starch:protein disappearance rate ratios from 2.01 to 3.23 (r=-0.823; P<0.001) which were linearly related with relative fat-pad weights and quadratically related with FCR to significant extents across all seven dietary treatments. However, tandem inclusions of glycine equivalents and threonine in the 165 g/kg CP diet significantly decreased disappearance rate ratios from 3.23 to 2.64; moreover, this tandem inclusion increased weight gain from 1994 to 2150 g/bird, decreased relative fat-pad weights from 13.31 to 11.65 g/kg and numerically improved FCR from 1.562 to 1.520. Instructively, birds offered the 165 g/kg CP diet supplemented with glycine equivalents and threonine performed comparably to their 208 g/kg CP diet counterparts with numerical differences of 1.99% more weight gain, 3.03% higher feed intake and a 0.66% higher FCR. That tandem inclusions of glycine equivalents and threonine in the 165 g/kg CP diet condensed ileal starch:protein disappearance rate ratios diet largely stemmed from a 6.18% (0.842 versus 0.793; P<0.005) increase in ileal protein (N) digestibility coefficients and an increase of 10.1% (21.39 versus 19.42 g/bird/day; P<0.005) in ileal protein (N) disappearance rates. It is then relevant that the tandem inclusion increased mean apparent ileal amino acid digestibility coefficients by 7.99% (0.838 versus 0.776; P<0.01) where increases in threonine, glycine and serine digestibilities were pronounced. The possible mechanisms whereby tandem inclusions of glycine equivalents and threonine in a reduced-CP diet increased ileal amino acid digestibilities, and ultimately condensed starch:protein disappearance rate ratios, are discussed and may stem from the up-regulation of relevant amino acid transport systems with over-lapping specificities.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofAnimal Feed Science and Technologyen
dc.titleGlycine equivalent and threonine inclusions in reduced-crude protein, maize-based diets impact on growth performance, fat deposition, starch-protein digestive dynamics and amino acid metabolism in broiler chickensen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.anifeedsci.2019.114387en
local.contributor.firstnamePeter Ven
local.contributor.firstnameAmy Fen
local.contributor.firstnameDafeien
local.contributor.firstnameAlien
local.contributor.firstnameVictor Den
local.contributor.firstnamePeter Hen
local.contributor.firstnameSonia Yen
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008830503 Live Animalsen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.emailamoss22@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.publisher.placeNetherlandsen
local.identifier.runningnumber114387en
local.format.startpage1en
local.format.endpage14en
local.identifier.scopusid85077655322en
local.peerreviewedYesen
local.identifier.volume261en
local.contributor.lastnameChrystalen
local.contributor.lastnameMossen
local.contributor.lastnameYinen
local.contributor.lastnameKhoddamien
local.contributor.lastnameNaranjoen
local.contributor.lastnameSelleen
local.contributor.lastnameLiuen
dc.identifier.staffune-id:amoss22en
local.profile.orcid0000-0002-8647-8448en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:1959.11/29211en
local.date.onlineversion2020-01-02-
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleGlycine equivalent and threonine inclusions in reduced-crude protein, maize-based diets impact on growth performance, fat deposition, starch-protein digestive dynamics and amino acid metabolism in broiler chickensen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorChrystal, Peter Ven
local.search.authorMoss, Amy Fen
local.search.authorYin, Dafeien
local.search.authorKhoddami, Alien
local.search.authorNaranjo, Victor Den
local.search.authorSelle, Peter Hen
local.search.authorLiu, Sonia Yen
local.uneassociationYesen
local.atsiresearchNoen
local.sensitive.culturalNoen
local.identifier.wosid000522386900005en
local.year.available2020en
local.year.published2020en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/0476b8e5-2a88-4fa4-af69-f7e5769e1cfden
local.subject.for2020300303 Animal nutritionen
local.subject.seo2020100699 Primary products from animals not elsewhere classifieden
Appears in Collections:Journal Article
School of Environmental and Rural Science
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