The invention discloses an application of a compound or a composition thereof as a
semen cryopreservation solution. According to the invention, through whole
genome re-sequencing and seminal
plasma non-target metabonomics, a regulation mechanism of interaction of
genome variation and metabolites on
semen traits is analyzed. Key metabolites having a protection effect on
sperm motility are screened from 3613 kinds of metabolites and 38 pieces of
sperm character analysis of breeding bulls. The function is verified through a standardized freezing process, it is found that after the
sperm concentration is adjusted to 6 * 10 < 8 > / mL, and incubation at 37 DEG C, gradient cooling and
liquid nitrogen programmed freezing are carried out, it is found through detection that the effect of a treatment group added with 15 [mu] M of 4, 6-dihydroxyquinoline and 5 [mu] M of
flavanone is the most remarkable, and the
vitality of frozen sperms can be improved. The invention further finds that the 4, 6-dihydroxyquinoline and the
flavanone are combined for use, so that a remarkable synergistic interaction effect can be generated. The method is simple and convenient to operate and easy to popularize, and provides a reliable means for
cryopreservation of the
semen.