The invention discloses a
molecular marker capable of affecting the
abdominal fat percentage of a chicken, and application of the
molecular marker, particularly relates to application of a chicken ALDH1A3
gene 3' noncoding region sequence g.941 T>C
molecular marker as a detection site for authenticating the
abdominal fat percentage of the chicken, and is characterized in that the
abdominal fat percentage of a CC
genotype individual is obviously greater than the abdominal fat percentage of a TT
genotype individual and the abdominal fat percentage of a TC
genotype individual. When the molecularmarker disclosed by the invention used for carrying out
marker assisted selection, the abdominal fat percentage obtained after the chicken is slaughtered can be greatly lowered, a feed use ratio of achicken
flock is improved, and breeding cost is lowered. Through the molecular marker combination and a detection primer, an efficient and accurate molecular marker assisted breeding technology can beestablished, then, the efficient and accurate molecular marker assisted breeding technology is applied to abdominal fat percentage character genetic improvement after a
breeding chicken is slaughtered, the abdominal fat percentage after the chicken is slaughtered is lowered, a feed use ratio of the chicken
flock is improved, the sales of enterprises can be improved, and core competitiveness is increased.