PROBLEM TO BE SOLVED: To provide a method for improving the reproduction of pigs or increasing the growth/productivity of baby pigs after their birth, and a feed for the same.SOLUTION: The method for improving the reproduction of pigs or the growth/productivity of the baby pigs after their birth includes administering coenzyme Q to the pigs. Preferably, by administering the coenzyme Q to mother pigs in a specific period of pregnancy, especially at one month after mating and/or the late pregnancy for at least one month, it is expected to obtain the improvement of the reproduction of the pigs or increase of the growth/productivity of the baby pigs after their birth.
