Assessing the value of improved marbling in beef breeding objectives and selection

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Abstract
A method of assessing the economic value of improved marbling for use in deriving beef breeding objectives for individual decision-makers is described and illustrated. Correlations between breeding objectives that account for marbling score were examined for 6 cases that differed in their breeding role, market-addressed (Domestic Australian, high quality Japanese), and other production system characteristics. Under the assumptions considered, the economic value of improved marbling varied with mean marbling score (i.e. was non-linear) in objectives for the Japanese market. Marbling improvement was a more important aim in populations with a greater propensity to marble. Differences between some breeding objectives were large (genetic correlations ≤0.65), with marked differences (genetic correlations

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