We observed highly significant effects of the IGF2 A3072G mutation on body composition traits (Table 1). Generally, these effects were stronger in the LW breed than in PL (the differ- ences in carcass meat percentage between alterna- tive homozygotes were 175% and 102% of trait standard deviation, respectively). We also noticed highly significant effects on growth performance, but only in PL. The G allele was associated with higher feed intake and lower average daily gain (the differences between alternative homozygotes were 72% and 62% of trait standard deviation, re- spectively). After Bonferroni correction ( < 0.0018), most of the described associations would still be significant. Only associations con- nected with loin and tenderloin (WT, WL, LEA) would not. No significant effects for meat quality traits were noted.
We observed highly significant effects of the IGF2 A3072G mutation on body composition traits (Table 1). Generally, these effects were stronger in the LW breed than in PL (the differ- ences in carcass meat percentage between alterna- tive homozygotes were 175% and 102% of trait standard deviation, respectively). We also noticed highly significant effects on growth performance, but only in PL. The G allele was associated with higher feed intake and lower average daily gain (the differences between alternative homozygotes were 72% and 62% of trait standard deviation, re- spectively). After Bonferroni correction ( < 0.0018), most of the described associations would still be significant. Only associations con- nected with loin and tenderloin (WT, WL, LEA) would not. No significant effects for meat quality traits were noted.
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