The objective of this experiment was to evaluate the effect of whole plant rice and spent mushroom substrate of Pleurotus ostreatus co-fermented feed on growth performance, nutrient apparent digestibility and blood indices of Liuyang black goats, and to provide a theoretical basis for the exploitation of whole plant rice and spent mushroom substrate of Pleurotus ostreatus co-fermented feed. According to the same sex and similar body weight principle, twenty-seven Liuyang black goats with a body weight of (15.53±2.22) kg were randomly divided i...