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Breeding Groups Module - Server Function

Source: R/modBreedingGroups.R
modBreedingGroupsServer.Rd

Server logic for breeding group formation using the groupAddAssign algorithm. This module integrates with the kinship-based maximal independent set (MIS) algorithm to form optimal breeding groups that minimize relatedness within groups while maximizing group sizes.

Usage

modBreedingGroupsServer(id, pedigree, geneticValues = NULL)

Arguments

id

character vector of length 1. Module namespace identifier.

pedigree

reactive returning pedigree data frame with columns: id, sire, dam, sex, and optionally birth, exit, gen.

geneticValues

optional reactive returning genetic value results from modGeneticValueServer. If provided and contains a kinship matrix, it will be used instead of calculating one.

Value

List with reactive components:

  • groups - List of character vectors with animal IDs per group

  • nGroups - Number of groups formed

  • score - Optimization score from groupAddAssign (minimum group size)

  • unassigned - Character vector of candidate IDs not placed in groups

  • groupKinship - List of kinship matrices per group (if withKin=TRUE)

Details

The module supports multiple configuration options:

  • Animal source: Select top-ranked animals or all available

  • Kinship threshold: Maximum allowed kinship within groups

  • Harem mode: Form groups with exactly one male each

  • Sex ratio: Target female-to-male ratio in groups

See also

modBreedingGroupsUI for the UI component

groupAddAssign for the underlying MIS algorithm

modGeneticValueServer for genetic value analysis

kinship for kinship matrix calculation