FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2109131811> ?p ?o ?g. }

• W2109131811 endingPage "88" @default.
• W2109131811 startingPage "79" @default.
• W2109131811 abstract "The effect of intake on urea production, entry into the digestive tract and return of N to the ornithine cycle was studied in four sheep. Each sheep received 0.6, 1.2 and 1.8 x estimated maintenance energy intake quantities of grass pellets for 9 d. After 4 d of adjustment, N balance measurements were conducted between days 5 and 8. From day 7 to day 9 animals were continuously infused, via the jugular vein, with [15N15N]urea and three urine samples were collected at approximately 2 h intervals 48-54 h after the start of infusion. Total urea and enrichments of [15N15N]- and [14N15N]urea in the urine samples were determined. Urea production was calculated from the isotopic dilution of [15N15N]urea and entry into the gastrointestinal tract (GIT) obtained from the difference between this and urinary urea elimination. Urea which enters the GIT undergoes hydrolysis to liberate NH3 which may be reabsorbed and enter the ornithine cycle in which case the product is [14N15N]urea, based on the probabilities of labelled and unlabelled N providing ureagenic precursors. The quantity of urea-N which returns to the ornithine cycle from the GIT can thus be calculated. Existing models based on this approach yield overestimates of the fate of individual urea molecules due to a failure to allow for multiple recycling of [14N15N]urea species through the GIT. Refinements introduced to cover this resulted in a 33-48% reduction in calculated return of label for the current study. The present model also predicted that 95% of the label movements across the GIT could be accommodated by three or fewer entries and returns of urea-N and 99% by recycling for a maximum of six occasions. Urea-N production increased with intake (P < 0.001) and exceeded digestible N values at all intakes. Urea which entered the digestive tract, both in absolute terms (P < 0.001) and as a proportion of production (0.62, 0.69, 0.73; P = 0.027), increased with intake. The proportion of entry into the digestive tract which was returned to the ornithine cycle remained reasonably constant (0.37-0.41) across all intakes but the absolute amount increased (5.6, 9.2 and 15.0 g N/d; P < 0.001) with intake. If allowance is included for losses of 15N in faeces then the approach offers a relatively simple means of estimating anabolic reuse of urea by digestive tract micro-organisms and can complement data obtained from the technically more demanding arterio-venous and multiple-isotope techniques used hitherto." @default.
• W2109131811 created "2016-06-24" @default.
• W2109131811 creator A5000136232 @default.
• W2109131811 creator A5015905606 @default.
• W2109131811 creator A5043600815 @default.
• W2109131811 creator A5084154044 @default.
• W2109131811 date "1998-01-01" @default.
• W2109131811 modified "2023-09-27" @default.
• W2109131811 title "Urea recycling in sheep: effects of intake" @default.
• W2109131811 cites W102187840 @default.
• W2109131811 cites W1556106041 @default.
• W2109131811 cites W1586388232 @default.
• W2109131811 cites W1648625787 @default.
• W2109131811 cites W1720545672 @default.
• W2109131811 cites W1975846887 @default.
• W2109131811 cites W2001143640 @default.
• W2109131811 cites W2008717719 @default.
• W2109131811 cites W2030627921 @default.
• W2109131811 cites W2039627303 @default.
• W2109131811 cites W2056996049 @default.
• W2109131811 cites W2088094133 @default.
• W2109131811 cites W2088419607 @default.
• W2109131811 cites W2096627752 @default.
• W2109131811 cites W2101649869 @default.
• W2109131811 cites W2120572603 @default.
• W2109131811 cites W2145178325 @default.
• W2109131811 cites W2147237813 @default.
• W2109131811 cites W2149111516 @default.
• W2109131811 cites W2157416266 @default.
• W2109131811 cites W2162539461 @default.
• W2109131811 cites W2168381829 @default.
• W2109131811 cites W2429259249 @default.
• W2109131811 cites W67953310 @default.
• W2109131811 doi "https://doi.org/10.1079/bjn19980011" @default.
• W2109131811 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9505805" @default.
• W2109131811 hasPublicationYear "1998" @default.
• W2109131811 type Work @default.
• W2109131811 sameAs 2109131811 @default.
• W2109131811 citedByCount "84" @default.
• W2109131811 countsByYear W21091318112012 @default.
• W2109131811 countsByYear W21091318112013 @default.
• W2109131811 countsByYear W21091318112014 @default.
• W2109131811 countsByYear W21091318112015 @default.
• W2109131811 countsByYear W21091318112016 @default.
• W2109131811 countsByYear W21091318112017 @default.
• W2109131811 countsByYear W21091318112018 @default.
• W2109131811 countsByYear W21091318112019 @default.
• W2109131811 countsByYear W21091318112020 @default.
• W2109131811 countsByYear W21091318112021 @default.
• W2109131811 countsByYear W21091318112022 @default.
• W2109131811 countsByYear W21091318112023 @default.
• W2109131811 crossrefType "journal-article" @default.
• W2109131811 hasAuthorship W2109131811A5000136232 @default.
• W2109131811 hasAuthorship W2109131811A5015905606 @default.
• W2109131811 hasAuthorship W2109131811A5043600815 @default.
• W2109131811 hasAuthorship W2109131811A5084154044 @default.
• W2109131811 hasBestOaLocation W21091318111 @default.
• W2109131811 hasConcept C121332964 @default.
• W2109131811 hasConcept C126322002 @default.
• W2109131811 hasConcept C140793950 @default.
• W2109131811 hasConcept C185592680 @default.
• W2109131811 hasConcept C2776382133 @default.
• W2109131811 hasConcept C2776796294 @default.
• W2109131811 hasConcept C2777468819 @default.
• W2109131811 hasConcept C2780026642 @default.
• W2109131811 hasConcept C2780365088 @default.
• W2109131811 hasConcept C515207424 @default.
• W2109131811 hasConcept C55493867 @default.
• W2109131811 hasConcept C71924100 @default.
• W2109131811 hasConcept C77061444 @default.
• W2109131811 hasConcept C86803240 @default.
• W2109131811 hasConcept C96618451 @default.
• W2109131811 hasConcept C97355855 @default.
• W2109131811 hasConceptScore W2109131811C121332964 @default.
• W2109131811 hasConceptScore W2109131811C126322002 @default.
• W2109131811 hasConceptScore W2109131811C140793950 @default.
• W2109131811 hasConceptScore W2109131811C185592680 @default.
• W2109131811 hasConceptScore W2109131811C2776382133 @default.
• W2109131811 hasConceptScore W2109131811C2776796294 @default.
• W2109131811 hasConceptScore W2109131811C2777468819 @default.
• W2109131811 hasConceptScore W2109131811C2780026642 @default.
• W2109131811 hasConceptScore W2109131811C2780365088 @default.
• W2109131811 hasConceptScore W2109131811C515207424 @default.
• W2109131811 hasConceptScore W2109131811C55493867 @default.
• W2109131811 hasConceptScore W2109131811C71924100 @default.
• W2109131811 hasConceptScore W2109131811C77061444 @default.
• W2109131811 hasConceptScore W2109131811C86803240 @default.
• W2109131811 hasConceptScore W2109131811C96618451 @default.
• W2109131811 hasConceptScore W2109131811C97355855 @default.
• W2109131811 hasIssue "1" @default.
• W2109131811 hasLocation W21091318111 @default.
• W2109131811 hasLocation W21091318112 @default.
• W2109131811 hasOpenAccess W2109131811 @default.
• W2109131811 hasPrimaryLocation W21091318111 @default.
• W2109131811 hasRelatedWork W1906104920 @default.
• W2109131811 hasRelatedWork W1954312323 @default.
• W2109131811 hasRelatedWork W1982969472 @default.
• W2109131811 hasRelatedWork W1984479817 @default.

• next