The application provides application of an IGFBP1
gene in regulation or evaluation of hen reproductive performance, and belongs to the field of
biotechnology and genetic breeding. The application promotes expression of the IGFBP1
gene of a hen by constructing a tissue-specific IGFBP1 recombinant adeno-associated
virus vector and using the tissue-specific IGFBP1 recombinant adeno-associated
virus vector to promote expression of the IGFBP1
gene of the hen, and improves the IGFBP1
protein content in serum of the hen, and further improves the reproductive performance of the hen. The application proves by experiments that the IGFBP1 gene has an influence on the egg production performance of a hen and the expression level of an HPG axis
hormone, can improve the total egg production of a hen, an
ovary index, the number of small white follicles, the number of
large white follicles, and the content of LH, E2, AMH and FSH in serum, can be used as a
candidate gene or a
genetic marker of egg production performance of a hen, enriches the serum judgment index of hen reproductive performance, and provides a valuable reference basis for
differential diagnosis of hen reproductive performance.