The invention discloses high-nutrition sow forage and roaster forage to solve roaster weaning stress syndrome and provides a novel roaster breeding method using the sow forage and the roaster forage. Starting with combined nutritions of the sow forage and the roaster forage and aiming at improving sow body condition and roaster physique, the novel roaster breeding method uses the high-nutrition-concentration forage and a scientific and reasonable feeding mode, and finally the aim of improving the nutritional level and the immunity of a sow and a roaster is realized. Therefore the weight of a piglet is more than 1.5kg, the milk of the sow is enough, the roaster is lactated 25 days through high-quality milk, one roaster eats 500g of the roaster forage, and finally the weight of the roaster can reach 16 jin after weaning. The roaster is robust in physique, the roaster can adapt to the environment well, and the problems of diarrhea, reduction of appetite and even death of the roaster during feeding are avoided.