Heritability and connections of sow fertility traits

Effects of sow, boar, and semen traits on sow reproduction

Heritability of eeG/erP traitS

Heritability of eeG/erP traitS

 The core mission of this dissertation was to examine the genetic architecture of selected EEG and ERP measures that may index important individual differences in brain structure and function. To do so, data were used from an extensive 2.5-hour EEG recording session in a sample of 263 MZ, 303 DZ twins and 195 of their singleton siblings from two age cohorts, one with an average age of about ...

A genetic analysis of sow productivity traits.

Genetic and phenotypic parameters for sow productivity traits were derived from analyses of records for 999 purebred Duroc and Yorkshire litters at the Beltsville Agricultural Research Center. Included were 682 spring-farrowed litters and 317 fall-farrowed litters. Primary traits examined were number of pigs born alive in the litter (NA), litter size at 21 d of age (N21), litter weight at 21 d ...

Heritability and the evolution of cognitive traits

A critical question in the study of the evolution of cognition and the brain concerns the extent to which variation in cognitive processes and associated neural mechanisms is adaptive and shaped by natural selection. In order to be available to selection, cognitive traits and their neural architecture must show heritable variation within a population, yet heritability of cognitive and neural tr...