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Open Access item Efecto de la suplementación de la dieta con aceites de girasol y pescado sobre el rendimiento productivo de los animales y el perfil de ácidos grasos de la leche de ovejas

Other Titles:Effect of diet supplementation whith sunflower and fish oils on animal performance and milk fatty acid profile in dairy ewes
Authors:Toral, Pablo G.
Gómez-Cortés, Pilar
Frutos, Pilar
Fuente, Miguel Ángel de la
Juárez, Manuela
Hervás, Gonzalo
Keywords:Lipid supplementation, PUFA, CLA, Milk fat depression, Sheep
Issue Date:May-2009
Publisher:Asociación Interprofesional para el Desarrollo Agrario
Citation:XIII Jornadas sobre Producción Animal (AIDA), ITEA. Tomo I: 283-285 (2009)
Abstract:This work was conducted to test the hypothesis that feeding a combination of sunflower oil plus fish oil would enhance the nutritional value of ovine milk without affecting animal performance. Thirty-two Assaf ewes were assigned to 2 treatments (2 lots of 8 animals per treatment): control (20:80 forage:concentrate ratio) or supplemented with 2% sunflower oil plus 1% fish oil (G+P), for 4 weeks. G+P diet remarkably increased the contents of cis-9 trans-11 C18:2 (from 0.73 to 3.00 g/100 g total fatty acids; FA) and trans-11 C18:1 (from 1.58 to 8.05 g/100 g total FA). Most changes in milk FA composition were addressed toward a healthier profile, resulting in a reduction of its atherogenicity index (-47%). However, oil supplementation decreased dry matter intake (-19%) and milk production (-14%), and affected milk composition, with reductions in protein (-8%) and fat contents (-13%). Milk fat reduction is discussed in terms of the joined action of several biohydrogenation intermediates.
Description:3 págs, 2 tabs.-- Trabajo presentado a las XIII Jornadas sobre Producción Animal(AIDA. Zaragoza, 12-13 de mayo de 2009).
Appears in Collections:(IFA) Comunicaciones congresos
(IF) Comunicaciones congresos
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