(I) A: The relation between the genotypes CC, CT and TT and birth weight for the CAPN4 gene. B: The relation between the sheep breeds (Barki, Ossimi and Rahmani) and birth weight for the CAPN4 gene. C: The relation between the genotypes (CC, CT and TT) by sex (male and female) interaction and birth weight for the CAPN4 gene. (II) A: The relation between the genotypes CC, CT and TT and final weight. B: The relation between the sheep breeds (Barki, Ossimi and Rahmani) and final weight for the CAPN4 gene. C: The relation between the genotypes (CC, CT and TT) by sex (male and female) interaction and final weight for the CAPN4 gene. (III) A: The relation between the genotypes CC, CT and TT and ADG for the CAPN4 gene. B: The relation between the sheep breeds (Barki, Ossimi and Rahmani) and ADG for the CAPN4 gene. C: The relation between the genotypes (CC, CT and TT) by sex (male and female) interaction and ADG for the CAPN4 gene.