They are only needed in small quantities; farmers may think they are inconsequential judging from their minute quantities on the ingredient list but these micro-nutrients play an equally important role just like the major nutrients in the league of proteins and carbohydrates. They boost utilisation of other nutrients, catalyse biological reactions, improve body immunity and play a role in reproduction process. Trace elements increase feed intake and thus production and growth rate. Stunted growth poor immunity and low production are signs of trace mineral deficiency.