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dc.contributor.authorBown, MD
dc.contributor.authorPoppi, DP
dc.contributor.authorSykes, Andrew
dc.coverage.spatialEngland
dc.date.accessioned2008-03-26T23:49:03Z
dc.date.available2007-03-09
dc.date.issued1991-09
dc.identifierS0007114591000855
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1991GQ86700008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=42fe17854fe8be72a22db98beb5d2208
dc.identifier.citationBown, M. D., Poppi, D. P., & Sykes, A. R. (1991). Nitrogen transactions along the digestive tract of lambs concurrently infected with Trichostrongylus colubriformis and Ostertagia circumcincta. British Journal of Nutrition, 66(2), 237-249.
dc.identifier.issn0007-1145
dc.identifier.other1760444 (pubmed)
dc.identifier.urihttps://hdl.handle.net/10182/385
dc.description.abstractTwelve lambs, paired on the basis of live weight, were cannulated in the abomasum, in the proximal jejunum approximately 4 m distal to the pylorus and in the terminal ileum. Six were infected with 3000 Trichostrongylus colubriformis and 3000 Ostertagia circumcincta larvae each day for 18 weeks and the remainder were pair-fed to individual infected lambs. All animals were offered ryegrass (Lolium perenne)–white clover (Trifolium repens) pasture, cut daily. Dry matter (DM) intake, live weight, faecal egg concentration, plasma pepsinogen and plasma protein concentrations were measured weekly. During weeks 7 and 17 after commencement of infection, the flow of digesta along the gastrointestinal tract was measured together with enteric plasma loss and true digestion and absorption of ¹²⁵I-labelled albumin in the small intestine. DM intake was depressed by parasitism, being 1331, (se 70), 423 (se 32) and 529 (se 52) g/d during weeks 3, 7 and 17 respectively. The flow of nitrogen at the proximal jejunum and in faeces was increased by parasitism during week 7 and at the abomasum and ileum during week 17. Plasma protein-N loss (g/d) into the gastrointestinal tract was 0.68 (se 0.091) and 1.97 (se 0.139) during week 7, and 0.85 (se0.158) and 1.96 (se 0.396) during week 17, in control and infected sheep respectively. True digestion and absorption of albumin in the proximal small intestine, the site of infection, was very low (mean 0.08) and was not affected by parasitism. Between the abomasum and terminal ileum absorption of albumin was high (mean 0.87) and again was not affected by parasitism. It was calculated that of the total increase in endogenous protein passing from the ileum tract as a result of infection, plasma protein comprised only a small percentage (10–36%). The major proportion of digestion and absorption of protein occurred in the distal small intestine beyond the site of infection and was not affected by infection.
dc.format.extentpp.237-249
dc.format.mediumPrint
dc.languageen
dc.language.isoen
dc.publisherCambridge University Press
dc.relationThe original publication is available from Cambridge University Press - https://doi.org/10.1079/BJN19910028
dc.relation.urihttps://doi.org/10.1079/BJN19910028
dc.rightsCopyright © The Nutrition Society 1991
dc.subjectsheep
dc.subjectnitrogen
dc.subjectTrichostrongylus colubriformis
dc.subjectOstertagia circumcincta
dc.subject.meshIntestine, Small
dc.subject.meshFeces
dc.subject.meshAnimals
dc.subject.meshSheep
dc.subject.meshOstertagiasis
dc.subject.meshTrichostrongylosis
dc.subject.meshSheep Diseases
dc.subject.meshNitrogen
dc.subject.meshPepsinogens
dc.subject.meshAlbumins
dc.subject.meshGastrointestinal Transit
dc.subject.meshIntestinal Absorption
dc.subject.meshAlbumins
dc.subject.meshAnimals
dc.subject.meshFeces
dc.subject.meshGastrointestinal Transit
dc.subject.meshIntestinal Absorption
dc.subject.meshIntestine, Small
dc.subject.meshNitrogen
dc.subject.meshOstertagiasis
dc.subject.meshPepsinogens
dc.subject.meshSheep
dc.subject.meshSheep Diseases
dc.subject.meshTrichostrongylosis
dc.titleNitrogen transactions along the digestive tract of lambs concurrently infected with Trichostrongylus colubriformis and Ostertagia circumcincta
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300400 Animal Production::300405 Animal production (pests and pathogens)
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300400 Animal Production::300403 Animal nutrition
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Agricultural Sciences
dc.identifier.doi10.1079/BJN19910028
dc.relation.isPartOfThe British Journal of Nutrition: an international journal of nutritional science
pubs.issue2
pubs.organisational-group|LU
pubs.organisational-group|LU|Agriculture and Life Sciences
pubs.organisational-group|LU|Agriculture and Life Sciences|AGSC
pubs.publication-statusPublished
pubs.volume66
dc.identifier.eissn1475-2662


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