1. (Currently Amended): A system for determining customized feed for at least one animal, the system comprising: a first memory portion configured to store animal data representative of the characteristics of the animal; a second memory portion configured to store first feed data representative of the feed ingredients located at a first location; a third memory portion configured to store second feed data representative of the feed ingredients located at a second location; a fourth memory portion configured to store evaluation data representative of at least one evaluation criteria; and a data processing circuit in communication with the memory portions and configured to generate nutrient profile data representative of a nutrient profile for the animal based upon the animal data, the data processing circuit being further configured to generate ration data representative of a combination of ingredients from the first and second locations, the ration data being generated by the data processing circuit based upon the profile data, the first and second feed data and the evaluation data, wherein the evaluation criteria include at least one of (i) animal production rate, (ii) the cost of feed per unit animal weight gain, and (iii) the feed weight per unit animal weight gain.