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Organic farming plays a considerable role in Austrian agriculture. Therefore it seems to be worthwhile to makesuggestions about a more ecological breeding goal for cattle breeds. Because of the fact that Simmental is themost frequent dual purpose cattle breed in Austria, this breed is chosen to show the impact of selection under anecological total merit index. With model calculations the effect on selection response in milk production beefproduction and functional traits under selection with the current economic total merit index and more ecologicalindex variants, e.g. with higher economic values for fitness and functional traits, is shown. As a basis for futuredecisions the efficiency of more or less ecological indices is compared. The results indicate that an increase ofthe current economic values of functional traits of about 50 percent does not present a great risk, expectedselection responses for milk production traits are still high

Ecological total merit index for an Austrian dual purpose cattle breed