Genomic dissection of maternal, additive and non-additive genetic effects for growth and carcass traits in Nile tilapia

Table 1 Log likelihood values with significance levels for different models for the six traits

Models	d.f.	BD	BL	BT	BWH	FW	FY
ADME		− 43.48	− 191.28	− 1.78	− 31.51	− 69.90	− 68.55
ADE	1	− 46.55**	− 195.75**	− 2.25	− 35.82**	− 74.74***	− 69.10
ADM	1	− 45.14*	− 192.02	− 2.34	− 33.40*	− 70.40	− 68.65
AME	1	− 43.48	− 191.28	− 1.78	− 31.51	− 69.90	− 68.55
AD	2	− 49.29**	− 197.99***	− 3.04	− 39.29***	− 76.05***	− 69.25
AE	2	− 46.55*	− 195.75**	− 2.25	− 35.82**	− 74.74**	− 69.10
AM	2	− 45.15	− 192.02	− 2.40	− 33.40	− 70.40	− 68.65
A	3	− 49.29**	− 197.99**	− 3.06	− 39.29***	− 76.05**	− 69.25

A model is the basic animal model, which is gradually expanded to an ADME [model with additive (A), dominance (D), maternal (M) and first order additive-by-additive epistatic interactions (E) effects] by adding each effect as random
The six traits are: BD body depth, BL body length, BT body thickness, BWH body weight at harvest, FW fillet weight, FY fillet yield
Significance levels for the likelihood ratio tests are expressed relative to the full model ADME. Critical values for type 1 error rates of 0.05, 0.01 and 0.001 were 2.71, 5.42 and 9.55, respectively, for 1 d.f.; 4.24, 7.29 and 11.77, respectively, for 2 d.f.; and 5.44, 8.75 and 13.48 respectively for 3 d.f. Statistical significance is labelled as ‘*’, ‘**’ and ‘***’ for P < 0.05, P < 0.01 and P < 0.001, respectively

ISSN: 1297-9686