METHOD FOR ALTERING FATTY ACID COMPOSITION OF MILK BY GENOTYPE SELECTION OF COWS

摘要

There is disclosed a method of reducing the level of saturated fatty acids relative to the level of unsaturated fatty acids in bovine milk by determining which cows of a herd produce milk containing β-casein having a proline at position 67, by testing genetic material of individual cows of the herd for the presence of DNA encoding β-casein having a proline residue at position 67 or by testing milk produced by individual cows of the herd for the presence of β-casein having a proline at position 67; selecting cows having DNA encoding β-casein with a proline residue at position 67 or that produce milk containing β-casein having a proline at position 67; and milking the selected cows to give milk having a reduced level of saturated fatty acids relative to the level of unsaturated fatty acids compared with milk obtained from the herd.