Longitudinal analysis of direct and indirect effects on average daily gain in rabbits using a structured antedependence model.

ABSTRACT:

Background

Indirect genetic effects (IGE) are important components of various traits in several species. Although the intensity of social interactions between partners likely vary over time, very few genetic studies have investigated how IGE vary over time for traits under selection in livestock species. To overcome this issue, our aim was: (1) to analyze longitudinal records of average daily gain (ADG) in rabbits subjected to a 5-week period of feed restriction using a structured antedependence (SAD) model that includes IGE and (2) to evaluate, by simulation, the response to selection when IGE are present and genetic evaluation is based on a SAD model that includes IGE or not.

Results

The direct genetic variance for ADG (g/d) increased from week 1 to 3 [from 8.03 to 13.47 (

SUBMITTER: David I 

PROVIDER: S-EPMC5946580 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature