A model on biological flow of phosphorus in growing pigs

• Autor(a) principal: Lopes,J.B.
• Data de Publicação: 2009
• Outros Autores: Moreira,J.A., Kebreab,E., Vitti,D.M.S.S., Abdalla,A.L., Crompton,L.A., France,J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivo brasileiro de medicina veterinária e zootecnia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000300024
• topic: pig; metabolism; balance; true absorption; radio-phosphorus; kinetic

Ten crossbred barrows weighting 20kg were allocated in five groups fed and on diets consisted of different total phosphorus (P) levels: 0.30%, 0.40%, 0.51%, 0.65%, and 0.73%. The animals were intravenously injected 7.4MBq of radioactive P (32P) and after seven days they were slaughtered for further analysis. The evaluated parameters were intake, excretion, specific activities, and flow of P in compartments (1-gut, 2-blood, 3-bone, and 4-soft tissue). Besides fecal losses, the kidneys played an import role in P regulation. The flows of P from tissue and gut to the blood were affected by P intake.