Oxidation of essential amino acids by the ovine gastrointestinal tract

Gerald Lobley, Xiangzhen Shen, Guowei Le, David Bremner, Eric Milne, Alexander Graham Calder, Susan Elizabeth Anderson, Ngaire Dennison

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

It is not known if the ruminant animal gastrointestinal tract (GIT) can oxidise essential amino acids (AA) other than leucine. Therefore, the oxidation of four essential AA (leucine, lysine, methionine and phenylalanine), supplied systemically as labelled 1-13C forms, was monitored across the mesenteric-drained viscera (MDV; small intestine) and portal-drained viscera (PDV; total GIT), as part of a Latin square design, in four wether sheep (35-45 kg) fed at 1.4 x maintenance. Oxidation was assessed primarily by appearance of 13CO2, corrected for sequestration of [13C]bicarbonate. The GIT contributed 25 % (P
Original languageEnglish
Pages (from-to)617-620
Number of pages4
JournalBritish Journal of Nutrition
Volume89
Issue number5
DOIs
Publication statusPublished - 1 May 2003

Fingerprint

Essential Amino Acids
Gastrointestinal Tract
Sheep
Viscera
Leucine
Ruminants
Bicarbonates
Phenylalanine
Methionine
Lysine
Small Intestine
Maintenance

Keywords

  • Amino Acids, Essential
  • Analysis of Variance
  • Animals
  • Blood Specimen Collection
  • Digestive System
  • Intestine, Small
  • Leucine
  • Lysine
  • Male
  • Mesenteric Veins
  • Methionine
  • Oxidation-Reduction
  • Phenylalanine
  • Portal Vein
  • Sheep

Cite this

Oxidation of essential amino acids by the ovine gastrointestinal tract. / Lobley, Gerald; Shen, Xiangzhen; Le, Guowei; Bremner, David; Milne, Eric; Calder, Alexander Graham; Anderson, Susan Elizabeth; Dennison, Ngaire.

In: British Journal of Nutrition, Vol. 89, No. 5, 01.05.2003, p. 617-620.

Research output: Contribution to journalArticle

Lobley, G, Shen, X, Le, G, Bremner, D, Milne, E, Calder, AG, Anderson, SE & Dennison, N 2003, 'Oxidation of essential amino acids by the ovine gastrointestinal tract', British Journal of Nutrition, vol. 89, no. 5, pp. 617-620. https://doi.org/10.1079/BJN2003831
Lobley, Gerald ; Shen, Xiangzhen ; Le, Guowei ; Bremner, David ; Milne, Eric ; Calder, Alexander Graham ; Anderson, Susan Elizabeth ; Dennison, Ngaire. / Oxidation of essential amino acids by the ovine gastrointestinal tract. In: British Journal of Nutrition. 2003 ; Vol. 89, No. 5. pp. 617-620.
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