Effects of the FecL major gene in the Lacaune meat sheep population

Table 5 Estimated thresholds for each genotype and resulting distribution, mean and variance of litter size (LS) according to the parameters η and σ ² of the underlying variable

Estimated thresholds	++	++^*	L+	L+^*
τ₁	-0.287		-0.849
τ₂	1.581		0.539
τ₃	2.711		1.691
Underlying variable parameters
η	0	0.86	0	-0.70
σ²	1	1	1	1
Resulting parameters on the observable scale
μ_obs	1.67	2.14	2.14	1.67
σ²_obs	0.35	0.44	0.61	0.47
%LS1	38.71	12.56	19.79	44.23
%LS2	55.60	63.88	50.71	45.07
%LS3	5.36	20.34	24.95	9.87
%LS4+	0.34	3.21	4.54	0.83

Values in columns ++ and L + correspond to the output of the threshold model: thresholds (τ1- τ3), mean and variance of the underlying variable (η, σ²) and the resulting mean and variance (μ_obs, σ²_obs) of the litter size percent (%LS1 - %LS4+) on the observable scale. Values for ++* and L + * columns correspond to the ++ and L + thresholds and a shift of the mean η of the underlying variable which would provide mean of L + and ++ LS on the observable scale, respectively.

ISSN: 1297-9686