Incidence d’un régime déséquilibré en acides aminés à chaînes ramifiées sur la consommation et la cinétique post-prandiale des concentrations des acides aminés et des cétoacides plasmatiques chez le porcelet - l'unam - université nantes angers le mans Accéder directement au contenu
Communication Dans Un Congrès Année : 2011

Effect of an unbalanced supply of branched‐chain amino acids on feed intake and the post‐prandial plasma kinetic of branchedchain amino acids and their ketoacids in piglets

Incidence d’un régime déséquilibré en acides aminés à chaînes ramifiées sur la consommation et la cinétique post-prandiale des concentrations des acides aminés et des cétoacides plasmatiques chez le porcelet

Résumé

When a diet deficient in valine is offered to piglets, feed intake is typically reduced. This effect is aggravated when dietary leucine is in excess. If an unbalanced supply of branched‐chain amino acids (BCAA) proves dangerous to the animals, the anorectic response could serve as a mechanism to prevent this situation. We verified this by measuring the voluntary feed intake during 30 minutes of a balanced diet one hour after ingestion of a test meal deficient or not deficient in valine. Ingestion of the test meal deficient in valine resulted in a 16% reduction in feed intake of the balanced diet (P = 0.06; n = 12), indicating that the signal to reduce feed intake occurred within 1 hour. It is possible that the plasma concentration of the limiting amino acid served as a signal for the dietary amino acid deficiency. We therefore determined the post‐prandial kinetics of plasma concentrations of BCAA and their ketoacids after ingestion of a test meal deficient or not deficient in valine in 4 piglets. Offering the deficient test meal resulted in lower plasma concentrations of valine and its ketoacid; the peak concentration occurred earlier with the deficient diet compared with the non‐deficient diet. In conclusion, it appears that an animal is able to detect an unbalanced supply of BCAA within 1 hour. The plasma concentration of valine or its concentration relative to the other BCAA during the post‐prandial period may act as a signal indicating the amino acid deficiency.
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Dates et versions

hal-02749321 , version 1 (03-06-2020)

Identifiants

  • HAL Id : hal-02749321 , version 1
  • PRODINRA : 48345

Citer

Mathieu Gloaguen, Nathalie Le Floc'H, Yvan Primot, Etienne Corrent, Jaap J. van Milgen. Incidence d’un régime déséquilibré en acides aminés à chaînes ramifiées sur la consommation et la cinétique post-prandiale des concentrations des acides aminés et des cétoacides plasmatiques chez le porcelet. 43. Journées de la Recherche Porcine, Feb 2011, Paris, France. ⟨hal-02749321⟩
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