The effect of aging on genetic parameters of boar semen traits.

ABSTRACT: The main objective of this study was to investigate whether the genetic parameters of porcine semen traits change with the age of the boar. The dataset included records from 449,966 ejaculates collected for artificial insemination from 5,692 boars from a commercial line between 7 and 60 mo of age. These records included 12 semen quantity and quality traits measured with a Computer-Assisted Sperm Analysis system. First, an animal repeatability model was applied to the complete dataset to predict the effect of the age of the boar at collection on semen traits. Based on the predicted effects of age, the dataset was divided into 3 age classes: 7 to 13 mo, 14 to 23 mo, and 24 to 60 mo. Traits measured in these age classes were analyzed using a trivariate model to estimate variance components an

SUBMITTER: Sa P 

PROVIDER: S-EPMC12445636 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature