Rumen phosphorus metabolism in sheep

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorDias, R. S.-
Autor(es): dc.creatorLopez, S.-
Autor(es): dc.creatorSilva, T.-
Autor(es): dc.creatorPardo, R. M. P.-
Autor(es): dc.creatorSilva Filho, J. C.-
Autor(es): dc.creatorVitti, D. M. S. S.-
Autor(es): dc.creatorKebreab, E.-
Autor(es): dc.creatorFrance, J.-
Data de aceite: dc.date.accessioned2026-02-09T12:09:15Z-
Data de disponibilização: dc.date.available2026-02-09T12:09:15Z-
Data de envio: dc.date.issued2020-07-01-
Data de envio: dc.date.issued2020-07-01-
Data de envio: dc.date.issued2009-08-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br//handle/1/41652-
Fonte completa do material: dc.identifierhttps://www.cambridge.org/core/journals/journal-of-agricultural-science/article/rumen-phosphorus-metabolism-in-sheep/F8CF97DA1DD8E3307DA2671C52F53600-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1155480-
Descrição: dc.descriptionThe objective of the present study was to examine the effect of the level of phosphorus (P) intake on ruminal P kinetics in sheep. Twelve Santa Inês male sheep (average body weight 36 kg) were fed a basal diet consisting of roughage (coast cross hay), concentrate mixture (cassava meal, soya bean meal and urea) and a mineral premix. The treatments consisted of the basal diet supplemented with 0, 1·5, 3 or 4·5 g/kg dry matter (DM) of mono-ammonium phosphate to provide increasing P levels representing treatments T0, T1, T2 and T3, respectively. The P content of experimental diets was 1·5; 2·0; 2·5 and 3·0 g P/kg DM, and considered highly deficient, deficient, adequate and in excess, respectively, compared with standard recommended allowances. Animals were injected with 32P and thereafter samples of blood were collected over 7 days, while samples of rumen fluid and saliva were collected 4 and 6 days after injection. Phosphorus intake affected P concentration in ruminal fluid, whereas P concentration in saliva was not affected. The values for P turnover time in the rumen were 1·42, 1·23, 1·18 and 1·04 days, whereas values of endogenous P entry into the rumen were 1·05, 1·37, 1·53 and 1·91 g/day for T0, T1, T2 and T3, respectively, both affected by P intake. The specific activity (SA) of P in saliva, rumen and plasma were also all affected by P intake. The relationship between saliva and rumen SA emphasizes that most endogenous P in the rumen came from saliva. The possibility of an extra P source besides saliva contributing to endogenous P in the rumen is discussed. It is concluded from the results that, regardless of P intake, the flow of endogenous P into the rumen contributes to ensure a minimum supply of this essential element, which may be important in matching the requirements of the rumen microbes.-
Idioma: dc.languageen-
Publicador: dc.publisherCambridge University Press-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceThe Journal of Agricultural Science-
Palavras-chave: dc.subjectSheep - Food-
Palavras-chave: dc.subjectPhosphorus in animal nutrition-
Palavras-chave: dc.subjectRuminants-
Palavras-chave: dc.subjectOvinos - Alimentação-
Palavras-chave: dc.subjectFósforo na nutrição animal-
Palavras-chave: dc.subjectRumiinantes-
Título: dc.titleRumen phosphorus metabolism in sheep-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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