Including α s1 casein gene information in genomic evaluations of French dairy goats

Table 5 Validation correlations^a for the 146 validation males for models based on female phenotypes (one step) for protein content

	Arbitrary probabilities	Three probability groups	Gene content	Without α _s1 casein information
Two-breed	0.66	0.65	0.75	0.72
Alpine	0.64	0.64	0.68	0.63
Saanen	0.84	0.84	0.86	0.75

The “arbitrary probabilities” model (Model 3) corresponds to the model using a combination of the 19 α _s1 casein possible genotypes as a random effect
The “three probability groups” model (Model 4) corresponds to a model in which the effects of the three groups of possible genotypes (strong, moderate and weak effect on protein content) were considered as fixed effects
The “gene content” model (Model 5a) corresponds to a model using the gene content approach without using predicted probabilities of α _s1 casein genotypes for females
The “without α _s1 casein information” model (Model 6) corresponds to a model in which α _s1 casein information was not considered
Two-breed results were obtained with both training and validation populations being two-breed (Alpine + Saanen) populations. Alpine and Saanen results were obtained with training and validation populations composed of either Alpine or Saanen animals, respectively
^aCorrelations between the 2015 DYD and the 2013 GEBV

ISSN: 1297-9686