This experiment was conducted to test the effect of hippophae rhomnoides fruit resides extraction(HRE) on egg yolk color of layer fed wheat-based diet.

• 和4%25的沙棘果渣提取物形成的试验日粮,研究从沙棘果渣中提取的黄色素对鸡蛋蛋黄的着色效果、营养价值的影响。