Genetic parameters for uniformity of harvest weight in Pacific white shrimp (Litopenaeus vannamei)

9 Pág. Departamento de ​Mejora Genética Animal (INIA)Uniformity of body weight is a trait of great economic importance in the production of white shrimp (Litopenaeus vannamei). A necessary condition to improve this trait through selective breeding is the existence of genetic variability for the environmental variance of body weight. Although several studies have reported such variability in other aquaculture species, to our knowledge, no estimates are available for shrimp. Our aim in this study was to estimate the genetic variance for weight uniformity in a farmed population of shrimp to determine the potential of including this trait in the selection program. We also estimated the genetic correlation of weight uniformity between two environments (selection nucleus and commercial population).This work was funded by the Ministerio de Ciencia, Innovación y Universidades, Spain (Grant CGL2016-75904-C2-2-P), fondos FEDER and the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (FPI-SGIT2016-02).Peer reviewe