Table 5

The populations and phenotypes used in the study

Pop.

N

Trait

Scaling

Age of evaluation

Correction


F2

1599

Blood and meat spots (BMS F2)

Adjusted from number and type of spots

35, 40, 50 weeks

Average of three sequential eggs, multiplied by 100.


LB

4161

Score

continuous scaling from 0 to 5

36, 40, 42 weeks

LN correction


Group

count of spots = > high or low

36, 40, 42 weeks

effect of hatch and tier of the battery


Number of spots

absolute number of spots

36, 40, 42 weeks

(number_corr+0,05)*100


Size of spots

continuous (in mm)

36, 40, 42 weeks

(size_corr+0,1)*100


Combination

number * size

36, 40, 42 weeks

(combination_corr+0,1)*100


Hy-Line

290

Blood spots (BL)

Semi-quantitative

early, late

The phenotypes were expressed as sire-daughter averages


Meat spots (MS)

Semi-quantitative

early, late

The phenotypes were expressed as sire-daughter averages


The studied populations and the number of individuals in each of them are indicated in the 1st and 2nd columns. The traits are described in the 3rd and 4th columns. The age at time of evaluation is given in the 5th column. The last column presents the correction functions used for normalizing the phenotypic data (LN = natural logarithm).

1 The number of hens genotyped in the Lohmann Brown population varied according to marker: MCW241, 767 hens; ZO-2 SNP,516; 15 other SNPs on the Z chromosome, 416; mirRNA-1556 sequencing, 90.

Honkatukia et al. BMC Genetics 2011 12:55   doi:10.1186/1471-2156-12-55

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