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Titolo:
EXCRETION OF BENZOIC-ACID DERIVATIVES IN URINE OF SHEEP GIVEN INTRARUMINAL INFUSIONS OF 3-PHENYLPROPIONIC AND CYCLOHEXANECARBOXYLIC ACIDS
Autore:
PAGELLA JH; CHEN XB; MACLEOD NA; ORSKOV ER; DEWEY PJS;
Indirizzi:
ROWETT RES INST,GREENBURN RD BUCKSBURN AB21 9SB ABERDEEN SCOTLAND ROWETT RES INST BUCKSBURN AB21 9SB ABERDEEN SCOTLAND
Titolo Testata:
British Journal of Nutrition
fascicolo: 4, volume: 77, anno: 1997,
pagine: 577 - 592
SICI:
0007-1145(1997)77:4<577:EOBDIU>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRA-GASTRIC INFUSION;
Keywords:
BENZOIC ACID; HIPPURIC ACID; 3-PHENYLPROPIONIC ACID; CYCLOHEXANECARBOXYLIC ACID; SHEEP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
J.H. Pagella et al., "EXCRETION OF BENZOIC-ACID DERIVATIVES IN URINE OF SHEEP GIVEN INTRARUMINAL INFUSIONS OF 3-PHENYLPROPIONIC AND CYCLOHEXANECARBOXYLIC ACIDS", British Journal of Nutrition, 77(4), 1997, pp. 577-592

Abstract

The quantitative relationship between the urinary excretion of benzoic acid (BA) and the uptake of 3-phenylpropionic (PPA) and cyclohexanecarboxylic (CHCA) acids was assessed. PPA and CHCA are produced in the rumen by microbial fermentation of lignocellulosic feeds and metabolized, after absorption, to BA which is excreted in the urine mainly as its glycine conjugate hippuric acid (HA). Four sheep nourished by intragastric infusions of all nutrients were given continuous ruminal infusions of PPA (8, 16 or 24 mmol/d) either alone or with CHCA (8 or 16 mmol/d) in a factorial experiment. The treatments were allocated to ten consecutive 6 d periods, with a control being repeated at periods 1, 5and 10., PPA and CHCA ruminal absorption rates, estimated using the Liquid-phase marker Cr-EDTA, were 0.78 (SD 0.29)/h and 0.88 (SD 0.28)/hrespectively, For the control, HA excretion was only 0.22 (SD 0.33) mmol/d and free BA was absent. For the other treatments, both HA and free BA were present and HA accounted for 0.85 (SD 0.05) of total BA. The urinary excretion of total BA showed a significant linear correlation (r = 0.997, P < 0.001) with the amounts of PPA and CHCA infused. Theurinary recovery of infused PPA and CHCA as total BA was 0.79 (SD 0.01). Faecal excretion of BA and its precursors was negligible. Results of this study show that urinary total BA is a potential estimator of the absorption of PPA + CHCA produced in the rumen.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/21 alle ore 02:51:37