Basal ileal endogenous amino acid flow in broiler chickens as influenced by age

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dc.citation.issue8
dc.citation.volume100
dc.contributor.authorBarua M
dc.contributor.authorAbdollahi MR
dc.contributor.authorZaefarian F
dc.contributor.authorWester TJ
dc.contributor.authorGirish CK
dc.contributor.authorChrystal PV
dc.contributor.authorRavindran V
dc.coverage.spatialEngland
dc.date.accessioned2023-12-12T23:36:36Z
dc.date.accessioned2024-07-25T06:41:32Z
dc.date.available2021-05-21
dc.date.available2023-12-12T23:36:36Z
dc.date.available2024-07-25T06:41:32Z
dc.date.issued2021-08
dc.description.abstractThe current study was carried out to measure the basal ileal endogenous amino acid (EAA) flow in male broilers (Ross 308) at different ages (d 7, 14, 21, 28, 35, and 42), following the feeding of a nitrogen-free diet. Titanium dioxide (5 g/kg) was included as an indigestible marker. The nitrogen-free diet was offered for four days prior to ileal digesta collection to 6 replicate cages housing 14 (d 3–7), 12 (d 10–14), 10 (d 17–21), 8 (d 24–28), 8 (d 31–35), and 6 (d 38–42) birds per cage. The basal EAA flow was calculated as g/kg DM intake. The amino acid (AA) profile of endogenous protein, expressed as g/100 g protein, was also calculated. The basal endogenous flow of nitrogen and all individual and total AA decreased quadratically (P < 0.05 to 0.001), with flows being higher on d 7, then decreasing on d 14, plateauing until d 35 and decreasing further on d 42. The concentrations of Trp, Cys, and Gly in the endogenous protein increased linearly (P < 0.01 to 0.001) with advancing age, whereas a linear decrease (P < 0.001) was noted for Lys. A quadratic influence (P < 0.05 to 0.001) was observed for the concentrations of Ile, Leu, Met, Val, and Asp. These changes in the endogenous protein profile may be attributed to variations in the contribution of endogenous sources with age but delineating the exact contribution of different sources is complicated. Overall, the current findings suggest that the basal ileal EAA flow is influenced by broiler age and age-specific EAA flows may need to be considered to standardize the AA digestibility.
dc.format.pagination101269-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/34198102
dc.identifier.citationBarua M, Abdollahi MR, Zaefarian F, Wester TJ, Girish CK, Chrystal PV, Ravindran V. (2021). Basal ileal endogenous amino acid flow in broiler chickens as influenced by age.. Poult Sci. 100. 8. (pp. 101269-).
dc.identifier.doi10.1016/j.psj.2021.101269
dc.identifier.eissn1525-3171
dc.identifier.elements-typejournal-article
dc.identifier.issn0032-5791
dc.identifier.numberARTN 101269
dc.identifier.piiS0032-5791(21)00303-5
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70690
dc.languageeng
dc.publisherElsevier Inc
dc.relation.isPartOfPoult Sci
dc.rights(c) 2021 The Author/s
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectage
dc.subjectamino acids
dc.subjectbroilers
dc.subjectendogenous flow
dc.subjectAmino Acids
dc.subjectAnimal Feed
dc.subjectAnimal Nutritional Physiological Phenomena
dc.subjectAnimals
dc.subjectChickens
dc.subjectDiet
dc.subjectDigestion
dc.subjectIleum
dc.subjectMale
dc.titleBasal ileal endogenous amino acid flow in broiler chickens as influenced by age
dc.typeJournal article
pubs.elements-id447042
pubs.organisational-groupOther
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