The book begins by solving a simple ration-balancing problem, providing step-by-step instructions with the computer program that any user - even one without computer training - can readily follow.
Developed in a cooperative effort by the Departments of Poultry Science and Agricultural and Applied Economics at the University of Georgia, UFFDA is menu-driven software that has the editing capabilities of a spreadsheet program for altering the ingredient and nutrient matrix. Animal Feed Formulation applies a well-tested, easy-to-use computer program called UFFDA that illustrates the principles of least-cost food formulation. For dairy, they are calf, heifer, bull and milking cow feeds, while for poultry they are starter, grower, layer and broiler feeds.Students in animal science, industry personnel involved in the feeding of animals, and professionals working for feed-mixing companies will all benefit from this current, comprehensive package - a text on the economic and nutritional aspects of feed formulations that optimize nutritional content while minimizing costs.
There are different categories of feed mixes produced for dairy and poultry. Even though more than twenty amino acids have been identified, only ten are considered essential in poultry feed. Digestible amino acids often include not just the first limiting amino acid, methionine, but also most of the ten essential amino acids. A number of databases are available to provide information on the digestible amino acid contents of various poultry feed ingredients. It is common to show the energy value in metabolisable energy (kcal or MJ ME/kg feed) and protein content of the diet but comprehensive information on concentrations of mineral elements and digestible amino acids are also provided. The nutrient composition of the diet will indicate the adequacy of the diet for the particular class of poultry for which it is prepared.
Typical formulations indicate the amounts of each ingredient that should be included in the diet, and then provide the concentration of nutrients (composition) in the diet.
Feed formulation is both a science and an art, requiring knowledge of feed and poultry, and some patience and innovation when using formulae. Modern broiler industry focuses on lowering production costs and increasing body weight with added value by producing customer oriented ready products.
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