Green grass forage is abundant, and the tender and succulent palatability is good. The fattening sheep are very fond of eating. The farmers need to pay attention, besides letting the sheep eat enough green forage, they should pay attention to feeding some hay. why? Because of fattening sheep, adult sheep must eat enough 8 kg of fresh grass (2.5 kg of dry matter) every day to reach the standard of fattening and gaining weight. It is generally difficult for sheep to eat fresh grass to meet this standard. There are two reasons for this: First, the weather is hot and humid, and the amount of grass consumed by sheep is reduced. Second, fresh green grass is juicy, and the water content is high (about 90%). Even if the sheep are full, the fresh green grass has high moisture content. Can not reach the standard of quantity of dry matter. This can not meet the needs of the sheep's growth and development of nutrients, thereby affecting the fattening effect. Therefore, sheep that are fattened during this period should be properly fed with high-quality hay and concentrates. Supplementing hay can also prevent the sheep from eating grazing, which is beneficial to fattening.