Application of N-carbamylglutamic acid and L-citrulline in preparation of products for improving conception rate of animals and/or birth weight of newborn animals

The invention provides application of N-carbamylglutamic acid and L-citrulline in preparation of products for improving the conception rate of animals and/or the birth weight of newborn animals. Research finds that when the weight ratio of N-carbamylglutamic acid to L-citrulline is (1-4): (3-10), when the feed is used for feeding female animals, the conception rate of the animals and/or the birth weight of newborn animals can be increased. The invention further provides a method for increasing the conception rate of the meat cows. Aiming at the problem that after artificial insemination of the meat cows, embryo death in the early stage of pregnancy affects the conception rate, N-carbamylglutamic acid and L-citrulline are supplemented through daily ration in the early stage of pregnancy, the nutrition environment of the uterus is improved, the conception rate after artificial insemination is increased, and the reproductive performance of the meat cows and the birth weight of newborn livestock are effectively i