The invention discloses a preparation method and application of a corn germ
meal extract, the preparation method is used for extracting functional active ingredients capable of improving
heat stress resistance of rabbits from corn germ
meal through a specific enzymolysis process, and the preparation method has the advantages of efficient extraction, condition optimization,
cost effectiveness and the like; in the aspect of application, the extract can remarkably reduce the
rectum temperature of rabbits, relieve the
adverse effect of
heat stress on rabbit bodies and enhance the
adaptive capacity of rabbits in a high-temperature environment; meanwhile, the feed intake of the female rabbits in the
gestation period and the
lactation period is improved, so that the farrowing rate of the female rabbits is improved, and the number and quality of young rabbits are increased; in addition, the extract can also provide necessary nutritional support for growth and development of the young rabbits, promote rapid growth of the young rabbits, shorten the breeding cycle and improve the breeding benefits; moreover, the
sperm quality, including
sperm motility, ejaculation amount, malformation rate and other indexes, of the breeding male rabbits is remarkably improved, so that the fertilization success rate is improved, and the number and quality of young rabbits are increased.