Guanzhong black pig purification and rejuvenation method

The invention discloses a Guanzhong black pig purification and rejuvenation method, in the Guanzhong black pig purification and rejuvenation method, close to lean body, trunk comparatively long Guanzhong black pig boar and sow are selected to build species pig base group, a group trans generation selection breed method is adopted to breed, atresia breeding is implemented for more generation, reserve sow is chosen, the fine quality of the parent is highlighted, and a few outstanding entities are kept. The method carries out the step of black pig purification and rejuvenation targeting black pig species, and adopts Guanzhong black pig as the basic breeding species, constructs a new synthetic line with high lean meat rate, tender meat texture, and unique flavor, the product mainly satisfies public demand for quality flavor pig meat, conforms to the pig industry quality breed parent breeding, completes the Guanzhong purification and rejuvenation breeding system, and breeds a quantity constant, species characteris