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Genetic parameters for earnings in Quarter Horse

A. P. A. Silva, Curi, R. A., Langlois, B., and Silva, J. A. I. I. V., Genetic parameters for earnings in Quarter Horse, vol. 13, pp. 5840-5848, 2014.

In this study, we estimated the heritability (h2) of earnings in the Quarter Horse in order to evaluate the inclusion of this trait in breeding programs. Records from 14,754 races of 2443 horses from 1978-2009 were provided by Sorocaba Hippodrome, São Paulo, Brazil. All ancestors of the registered horses were included in the pedigree file until the 4th generation. Log-transformed performance measures (LPM) were analyzed for animals aged 2, 3, and 4 years and during their entire career.

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