Relación entre los aportes dietarios, las necesidades humanas de cla (ácido linoleico conjugado) y el impacto de enriquecer la leche con cla

• A. Suriana ^[1] ; S. Calsamiglia ^[1]
  1. [1] Universitat Autònoma de Barcelona

     Universitat Autònoma de Barcelona

     Barcelona, España

     
• Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 1, 2015, ISBN 978-84-606-7969-1, págs. 251-253
• Idioma: español
• Títulos paralelos:
  • The relationship between human daily requirements of cla, the potential enrichment of milk through cow’s nutrition and daily human consumption
• Enlaces
  • Texto Completo Libro
• Resumen

  • The objectives of this research were to determine human daily recommendations, human current consumption of CLA and the best feeding strategies in dairy cows to enrich milk with CLA. The most commonly reported intake recommendations for human are 0.8 g/d (from 0.6 to 3.2 g/d). The estimated current average human consumption in Europe, US and Canada is 0.21 g/d, ranging from 0.06 g/d in Portugal to 0.40 g/d in Germany, well below the requirements. Published papers (n=69) based on supplementation the diet of dairy cows with plant oils, fish oils or the combination of both were analyzed using meta-analysis techniques. The best strategy to increase the content of CLA in milk was combining fish oils and plant oils (1.34 vs. 0.61; P<0.01) (x 2.2), but decreased milk fat content (3.12 vs. 3.61; P<0.01). Diets supplemented with linseed are also a good strategy (0.90 vs. 0.61; P<0.01) without affecting the fat content. In plant oils, extruded seeds effectively increased the CLA content of milk (1.11 vs. 0.57; P<0.01) without affecting milk fat content. If we assume an increase content of x 2.2 in CLA in milk and milk products, average human consumption would increase from 0.21 to 0.46 g/day.