Maternal Grandsire Model for Dairy Sire Evaluation

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Abstract
In the application of best linear unbiased prediction to evaluation of dairy sires, computational considerations have required that relationships among cows and their descendants be ignored. A sire''s evaluation does not incorporate the information from all of his female relatives nor does it reflect information about the dams of his daughters. A procedure which uses this information becomes computationally feasible if some relationships are approximated. This procedure is equivalent to computing under a model which includes sire and maternal grandsires.