Particle size of various feed ingredients is one of the important factors. If particle size is not uniform and having coarse particles may cause cracks.While formulating pelleted feed for shrimps, normally desired quantity of binder is added. If the quantity is less or over dried cracks may appear on the pellets. After preparation of pellets proper storage is also important.
lack of binders, higher airspeed drying after pelletization. But if you are talking about a commercial-scale operation, you may check the weight of the gunny bag.