Plasma tocopherol in sheep and cattle after ingesting free or acetylated tocopherol

• Autores: Hidiroglou, Nick N.; McDowell, Lee Russell; Balbuena, Osvaldo
• Año de publicación: 1989
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Journal of Dairy Science 72 (7) : 1793-1799 (July 1989)
• Materia: Ganado Bovino; Ovinos; Tocoferoles; Plasma Sanguíneo; Cattle; Sheep; Tocopherols; Blood Plasma
• Institución: Instituto Nacional de Tecnología Agropecuaria

Two trials were carried out to evaluate the bioavailability of dl-α-tocopherol and dl-α-tocopherol acetate administered to sheep and cattle in a single oral dose. In the first trial, two groups of five sheep were used. They received 100 mg/kg body weight of either dl-α-tocopherol or its acetylated form. The blood plasma α-tocopherol tolerance curve area was higher in the dl-α-tocopherol group than in its ester form. The time to reach maximum plasma α-tocopherol concentration was less in the dl-α-tocopherol group than in its ester form. In a second trial, four heifers received the two forms (50 mg/kg body weight) in rotation after an appropriate washing period between the two dosings. Again, plasma tolerance curve area was greater in the cattle following administration of dl-α-tocopherol than its acetylated form.
EEA Colonia Benitez
Fil: Hidiroglou, Nick N. University of Florida. Animal Science Department; Estados Unidos
Fil: McDowell, Lee Russell. University of Florida. Animal Science Department; Estados Unidos
Fil: Balbuena, Osvaldo. University of Florida. Animal Science Department; Estados Unidos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Colonia Benítez; Argentina.