Ir a la página de inicio del Gobierno del Principado de Asturias

Datos del Documento

Utilice este identificador para citar o enlazar este documento: https://ria.asturias.es/RIA/handle/123456789/12067


Título: Improving the fatty acid profile of dairy cow milk by combining grazing with feeding of total mixed ration
Autores: Morales Almaraz, Ernesto
Soldado, Ana
González, Amelia
Martínez, Adela
Domínguez Vara, Ignacio
Roza Delgado, Begoña de la
Vicente, Fernando
Palabras Claves: Ácido linoleico conjugado
Tiempo de pastoreo
Ácidos grasos de la leche
Vaca lechera
Fecha Edición: 2010
Editor: Cambridge University Press
Cita Bibliográfica: Morales Almaraz, E...[et al.]. Improving the fatty acid profile of dairy cow milk by combining grazing with feeding of total mixed ration. Journal of Dairy Research. 2010 ; 77 : 225-230
Resumen: Grazing cows could produce milk with a higher proportion of polyunsaturated fatty acids, which is beneficial to human health, compared with non-grazing cows, though grazing alone could compromise milk production. Under oceanic climate conditions, a study involving 15 dairy cows, fed total mixed ration (TMR) ad libitum in combination with different grazing times of 12 h (TMR12), 6 h (TMR06) and zero grazing time (TMR00) with the aim to evaluate different strategies on the fatty acids profile of milk and milk production. No differences were seen between the treatments with respect to milk yield (34.4±6.3 kg/d) or milk protein content (30.4±1.8 g/kg). The milk produced by the TMR12 cows had less total fat (36.2 vs. 38.2 g/kg) and saturated fatty acid (FA, 69.39 vs. 71.44 g/100 g FA) than that produced by the TMR00 cows. The concentration of vaccenic acid in the TMR06 and TMR12 milk was twice that of the TMR00 milk (4.22, 4.09 and 2.26 g/100 g FA respectively). Linear increases in conjugated linoleic (CLA) and linolenic acids were observed with increasing grazing time. Pasture was an important source of FA especially C18 : 3 for TMR06 and TMR12 cows. Under oceanic climatic conditions, the grazing of dairy cows as a complement to feeding with TMR can improve the FA profile of milk and increase its CLA content.
URI: https://ria.asturias.es/RIA/handle/123456789/12067
ISSN: 0022-0299
Aparece en las Colecciones:Agroalimentación y Ganadería

Archivos en este documento:



Archivo TamañoFormato
Improving the fatty acid profile.pdf70,85 kBAdobe PDFVer/Abrir



logo

Todos los documentos en RIA están protegidos por derechos de autor.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard - Contacto