highly significantP < 0.01
Specific combining ability The SCA effect was highly significant ( P < 0.01) in BWAFE, EN, EW, and EM but non-significant in the other traits (Table 4 ).
Specific combining ability The SCA effect was highly significant ( P < 0.01) in BWAFE, EN, EW, and EM but non-significant in the other traits (Table 4 ).
In most genotypes, EW showed an increasing trend with layers’ age (Fig. 3 ).