Table 2.

Additive effect of PLAG1 genotype¹ on continuous female fertility, growth, and size traits

Trait	n	Additive effect of PLAG1 genotype 1	SE	%Var 2	Mean	SD
Weeks pregnant (actual), wk	1498	1.06*	0.44	0.61	15.74	9.44
Weeks pregnant (estimated), wk	2080	1.81**	0.39	1.51	13.83	9.80
Heifer days to calving, d	1079	−10.92***	1.78	1.76	356.89	42.12
Age at first calving, d	1110	−8.90***	1.72	0.88	1100.51	57.85
200-d weight, kg	2671	−1.76*	0.63	0.15	156.45	34.27
400-d weight, kg	1781	−1.28	0.86	0.08	179.21	30.97
600-d weight, kg	1094	0.82	1.20	0.01	266.77	44.40
Mature cow weight (≥3 yr), kg	1201	−10.88***	2.07	1.30	367.43	58.57
Mature cow weight (≥5 yr), kg	507	−9.17*	2.87	1.71	429.24	41.29
ADWG3 between 200 and 400 d, kg/d	1781	0.01	<0.01	0.09	0.10	0.12
ADWG3 between 200 and 600 d, kg/d	1071	<0.01	<0.01	0.06	0.29	0.07
ADWG3 between 400 and 600 d, kg/d	982	<−0.01	<0.01	<0.01	0.47	0.15

*P < 0.05; **P < 0.0001; ***P < 1 × 10⁻⁶.

PLAG1 rs109815800 genotypes: 0 = homozygous reference allele (GG), 1 = heterozygous (GT), and 2 = homozygous alternative allele (TT).

%Var = percent phenotypic variance explained by PLAG1 genotype.

ADWG = average daily weight gain.