Today, due to expansion of industrial space of animal husbandry in all over the world, so products should be selected for animals and livestock diets have reasonable price.

Chaff is obtained from the remnants of wheat and barley stems. This product can be bought and sold at reasonable price. chaff is dried grasses and plant stems that are used for food for farm animals.

Hay(kezel): it is hard or rough grain of wheat and barley that is obtained from the remains of stem after combining and packing, which is more obtain in farms.

Chaff contains the dry stems of dark plants of cereals and legumes, which are obtained after threshing and separating the seeds. In general, the nutritional value of chaff from any plant is low, because chaff is obtained when the plant has reached its maximum growth and all nutrients have accumulated in the seeds.

In terms of nutritional value, cereal chaff and grain chaff are very suitable. Among dark cereal, oat chaff is better than barley chaff and barley chaff is better than wheat chaff.

Wheat chaff contains higher amounts of cellulose and due to high strength and durability and good nutritional value, it can be used in animal and livestock feed.

To increase the nutritional value of chaff, experts process it. Chaff processing is done in two ways: physical and chemical. Physical method include: crushing, grinding and soaking. In chemical method can be used chemical material such as urea and molasses to improve its nutritional value. Rich chaff is good feed in animal diets, but some animals don’t eat it and should be used small amount of it in diets.