A method and system to generate the highest level of return on investment of a cattle ranch producing beef to the consumer. Through the use of computer software integrated with an individual cow and calf identification system, the method and system disclosed herein allows a cattle producer to analyze the yearly production characteristics of each individual cow's calf or calves through all the various phases of growth and production with an accumulation of the economic cost and gain of value up to the end product as a feeder or cull.The total value of the carcass at the end of production, expressed as a sum of the costs associated with producing each animal minus the market value of the animal, allows the animal's economic value to be expressed by one figure which can then be used to judge the cow's ability to produce animals that meet all predetermined economically important genetic traits. This system and method of cow herd management provides a continuing improvement in the efficiency of the ranching operation and a better product for the consumers.