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Table 2 Statistics on the estimations of the parameters of the egg laying curves adjusted individually to the F2 Japanese quail and used as quantitative traits in the genome scan

From: Search for QTL affecting the shape of the egg laying curve of the Japanese quail

Curve type

Trait (definition)

Mean

Standard deviation

Minimum

Maximum

Model 1 [4] (N = 354)

b (weekly rate of decrease in egg laying after peak)

0.0160

0.0416

-0.0068

0.3654

 

c (indicator of 1/variance in sexual maturity)

3.223

3.155

0.1665

22.20

 

d (number of weeks in test until sexual maturity)

4.186

4.842

0.6212

46.33

Model 2 [6] (N = 352)

y P (3-week production at the egg laying plateau)

18.98

1.615

8.329

23.46

 

t 2 (number of weeks in test until egg laying plateau)

5.272

1.935

2.299

20.25

 

b4(weekly rate of change in egg laying after the plateau)

-0.3497

0.5767

-4.698

0

Model 3 [7] (N = 308)

k1 (proportion of peak production during the increasing phase of the curve)

0.8530

0.0944

0.3500

1.000

 

k2(proportion of peak production during the decreasing phase of the curve)

0.6056

0.3082

0

0.992

 

c2 (duration of peak egg production)

37.38

10.08

4.779

56.61