Linkage disequilibrium on chromosome 6 in Australian Holstein-Friesian cattle Mehar S. Khatkar, Peter C. Thomson, Imke Tammen, Julie A.L. Cavanagh, Frank W. Nicholas and Herman W. Raadsma Genet. Sel. Evol., 38 5 (2006) 463-477 Published online: 06 September 2006 DOI: 10.1051/gse:2006015