IFCE

English

Portail documentaire

Mon espace documentaire

A-
A
A+

Se connecter

Mot de passe oublié ?
Pas encore inscrit ?

Accueil

Adresses

IFCE

contact

Nouvelle recherche

Phosphorus digestibility and phytate degradation by yearlings and mature horses

Documents numériques non visibles

Ajouter à ma sélection

Ajouter à ma sélection

Lien vers la notice

Titre :	Phosphorus digestibility and phytate degradation by yearlings and mature horses (2015)
Auteurs :	A.L. Fowler ; T.L. Hansen ; L.A. Strasinger ; B.E. Harlow ; L.M. Lawrence
Type de document :	Article : texte imprimé
Dans :	JOURNAL OF ANIMAL SCIENCE (vol.93, 2015-01-01)
Article en page(s) :	8 p.
Langues:	Anglais
Mots-clés :	Mots-clés cheval PHOSPHORE Equivoc Âge Du Cheval ; Digestion ; Minéraux
Résumé :	Inorganic P is often added to growing horse diets because organic P, or phytate-P, is believed to have lower digestibility. If horses can efficiently digest organic P, then the need for inorganic P may be reduced. Much of the P in grain-based concentrates fed to growing horses is in the form of phytate-P. Little is known about the ability of growing horses to degrade phytate-P or whether horse age affects mineral digestion in horses. The objective of this study was to examine the effect of age on P, Ca, and Mg digestibility as well as phytate-P degradation. Four yearling geldings and 4 mature geldings were fed a diet of alfalfa cubes, timothy cubes, and a pelleted concentrate. The diet contained 0.28% total P and 17.4% of that P was in the phytate form. There was a 14-d diet adaptation period followed by a 4-d fecal collection period. Apparent total tract P digestibility was higher for yearlings than mature geldings (P = 0.036; 7.7 and \2266.6% for yearlings and mature geldings, respectively). Phytate-P disappearance was 94.8% and did not differ between ages (P = 0.190). Apparent Ca digestibility was lower in mature geldings (P = 0.043), but apparent Mg digestibility did not differ between ages (P = 0.414). Phytate is broken down in the gastrointestinal tract, but the low P digestibilities suggest that either degradation occurs after the site of P absorption or liberated P is recycled back into the gastrointestinal tract. Yearlings can utilize organic P as well as mature horses; therefore, diets without inorganic P are acceptable for growing horses.
Cote du document numérique :	17081
Classement cheval :	B05

IFCE Haras nationaux Le Cadre noir pmb

Portail documentaire IFCE

Un fonds documentaire unique, scientifique, technique et patrimonial de plus de 60 000 références, en perpétuelle évolution. Effectuez votre recherche afin de générer votre bibliographie personnalisée ou consultez des listes thématiques.

Ressources IFCE

Équi-VOD

Le Cadre noir en vidéo

Librairie (boutique)

Outils IFCE

Équipédia

Colloques et conférences

Stats & cartes

Restez informé

Inscription