1, by forage species. Sheep prefer leguminous grasses with high nutritional value, such as alfalfa and clover, and don't like straw, thatch and reed.
2. According to the shape of forage grass. Sheep like to eat grass with wide and thin leaves and no thorns, such as sweet potato leaves and mulberry leaves, but don't like grass sheep with sharp leaves, such as sand grass, straw and pine needle leaves.
3. According to the growth period of pasture. Sheep prefer to eat tender grass at the beginning of flowering rather than hay at the end of flowering.
4. According to the growing position of pasture. Sheep like to eat the top of forage grass, especially the top with seeds. I don't like to eat coarse old grass near the roots.