Feed additive for improving reproductive performance of boars

The invention discloses a feed additive for improving reproductive performance of boars, the feed additive comprises a core component and a carrier, the weight part ratio of the core component to the carrier is (31-98.5): (1-70), the core component comprises the following components in parts by weight: 0.01-20 parts of L-carnitine, 1-80 parts of saccharomyces cerevisiae cell wall, 0.01-20 parts of glucose oxidase, 0.01-20 parts of catalase, 1-80 parts of fructooligosaccharide and 1-80 parts of dietary fiber, and the carrier is soybean meal; the dietary fiber is a plant fiber raw material in which the proportion of fermentable fiber is 35% and the proportion of inert fiber is 65%, and the protein content of the soybean meal is 43%; aiming at the problems of insufficient energy metabolism kinetic energy, high possibility of oxidative stress, higher sensitivity to harmful substances in feed, high possibility of constipation and the like of sows in the pregnancy and lactation stages, the invention provides the fe