Each farm has a unique approach to feed preparation, ranging from basic to complex systems. In intensive livestock production systems, feed is the largest cost item so having a fully functional and efficient feed mill operation is essential for maximising profitability. The feed mill is at the heart of production of the feed preparation and delivery operation so regular audits of the different processes are required to maintain efficiency. For example, the ground grain particle size and distribution has to be monitored regularly to provide optimal nutrient absorbent in the animal.