A highly automated system to identify, measure, manage and control individual animals in grazing environments to monitor, analyze, model, predict, promote, optimize, and mitigate a variety of conditions and interactions relating to the grazing environment and an animal's health, welfare, performance, productivity, efficiency, quality, economic and genetic value. The system having a transmitters that identify individual animals. A weighing device that weighs the animal while the animal consumes substances and a dispensing device that controls substance provision to individual animals. A computer considers a number of factors in generating control signals sent to the system to dispense a prescribed amount of mineral, vitamin, medicinal or supplement compound to an individual animal. The system models, predicts and estimates a number of conditions related to the animal and its grazing environment that improve animal welfare, increases production, and preserves and conserves resources.