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https://hdl.handle.net/1959.11/21969
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nolan, John | en |
dc.contributor.author | Leng, R | en |
dc.date.accessioned | 2017-10-06T15:15:00Z | - |
dc.date.issued | 1970 | - |
dc.identifier.citation | British Journal of Nutrition, 24(4), p. 905-915 | en |
dc.identifier.issn | 1475-2662 | en |
dc.identifier.issn | 0007-1145 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/21969 | - |
dc.description.abstract | 1. Metabolism of urea in non-pregnant and pregnant sheep (1–25 d from term) has been examined. Injections of (14C) urea were used to estimate urea entry rate, urea pool size and urea space in sheep given 1000g of a diet of equal parts of crushed oats and chaffed lucerne hay (day a) and in the same sheep 4 d after the ration had been reduced to 250 g (day b). 2. On both experimental days (a and b), mean pool size was greater (14% on day a, 29% on day b) and urea space was greater (54% on day a, 24% on day b) in pregnant animals than in non-pregnant animals; mean plasma urea concentrations were lower (35%) in the pregnant animals on day a but were not significantly different on day b. 3. The entry rate of urea was similar in all the animals on day a, but was significantly higher (34%) in pregnant than in non-pregnant animals on day b. There was a significant decrease in urea entry rate in both pregnant (33%) and non-pregnant (86%) animals on day b. 4. The rate of excretion of urea was lower (26% on day a, 35% on day b) in pregnant animals, indicating a higher (31% on day a, 40% on day b) rate of degradation of urea in the digestive tract of pregnant as compared with non-pregnant sheep. 5. Measurements of urea entry rate have been used to calculate the upper limit of amino acid deamination in pregnant and non-pregnant sheep, and this has been used as an indication of the potential availability of amino acid carbon for glucose synthesis. It is suggested that, at a maximum, amino acids may have contributed the carbon required for 63 g/d and 52 g/d of glucose on days a and b respectively. | en |
dc.language | en | en |
dc.publisher | Cambridge University Press | en |
dc.relation.ispartof | British Journal of Nutrition | en |
dc.title | Metabolism of urea in late pregnancy and the possible contribution of amino acid carbon to glucose synthesis in sheep | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1079/BJN19700095 | en |
dc.subject.keywords | Animal Nutrition | en |
local.contributor.firstname | John | en |
local.contributor.firstname | R | en |
local.subject.for2008 | 070204 Animal Nutrition | en |
local.subject.seo2008 | 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | jnolan@une.edu.au | en |
local.profile.email | rleng@ozemail.com.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-chute-20170729-174341 | en |
local.publisher.place | United Kingdom | en |
local.format.startpage | 905 | en |
local.format.endpage | 915 | en |
local.identifier.scopusid | 0014888928 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 24 | en |
local.identifier.issue | 4 | en |
local.contributor.lastname | Nolan | en |
local.contributor.lastname | Leng | en |
dc.identifier.staff | une-id:jnolan | en |
local.profile.orcid | 0000-0001-7949-950X | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:22159 | en |
local.identifier.handle | https://hdl.handle.net/1959.11/21969 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Metabolism of urea in late pregnancy and the possible contribution of amino acid carbon to glucose synthesis in sheep | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Nolan, John | en |
local.search.author | Leng, R | en |
local.uneassociation | Unknown | en |
local.year.published | 1970 | en |
Appears in Collections: | Journal Article |
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