Effect of silage type and concentrate level on conjugated linoleic acids, trans-C18:1 isomers and fat content in milk from dairy cows Tina S. Nielsen, Ellen M. Straarup, Mogens Vestergaard and Kris SejrsenReprod. Nutr. Dev., 46 6 (2006) 699-712DOI: https://doi.org/10.1051/rnd:2006044