Table 1 

Summary statistics for the phenotypic data in the sires 

Trait 
N 
Mean 
σ 



Milk Yield (kg) 
914 
158.3 
231.2 



Fat Yield (kg) 
914 
6.1 
7.6 



Sires 
Protein Yield (kg) 
914 
5.8 
6.6 


Fat Percentage (kg) (× 1000) 
914 
4.9 
142.3 



Protein Percentage (kg) (× 1000) 
914 
0.96 
82.7 



Somatic Cell Score (log_{e }SCC) (× 1000) 
773 
34.2 
104.9 



Summary statistics include the total number of phenotypic records (N), mean and standard deviation (σ) for each trait in the sires. Phenotypes in the sires are expressed as daughter yield deviations on a PTA scale 

Meredith et al. BMC Genetics 2012 13:21 doi:10.1186/147121561321 