Records in competition are often registered as earnings. This measure is useful but leads to difficulties to determine the value allocated to non-earning horses, to standardize by transformation (to a normal distribution) and to account for repeated performances. The major problem is the existence of non optimal rules of endowment, not exactly based on the level of competitors. A new model, assuming an underlying variable on which only the relative position (rank) of the animals is measured, is proposed and an estimate of genetic value is obtained as the mode of a posterior density.

A. Tavernier

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XVI. Poultry, fish and horse genetics and breeding, growth and reproduction, immune response and disease resistance., , 194–197, 1990
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