A NEW GUIDE FOR POULTRY DIET FORMULATION WITH SOME AID TABLES

Diet formulation can be done either by hand or by using the computer. In addition to the computer programs the hand calculation is increasing and forming a good job, and it is possible for any specialist to formulate even rather complex diets. To reduce hand calculations what is called “aid tables” are established containing already established computations. To mix diets, information about nutrient requirements, feed composition, and methods of formulation are needed. The nutrient requirements can be reduced into eleven estimates. Commonly in formulations we use corn, soybean meal as basal feeds, limestone, calcium phosphate, common salt, methionine and lysine, and premixes. In some instances fat or oil, fish meal, and wheat bran may be used. Of the five methods of diet formulation, the square and simultaneous equations are the two applied in this paper using four groups of aid tables. The tables include the chemical composition of different amounts of feeds, the elements in different amounts of supplements, corn/soya mixtures made according to different C/P ratios, and lastly mixtures of fat and soya for energy and crude protein correction. In the first amounts of mineral supplements are picked from the aid tables, needs of energy and crude protein are corrected, corn and soybean meal proportions are calculated on crude protein or energy- basis then the other nutrient is corrected using fat/soya tables. In simultaneous method, and after estimating the mineral supplements and correcting the energy and crude protein needs, the proportions of corn and soybean meal are read from the simultaneous substitute table saving too much time for calculation. The proportions are reduced to the balance 100 units and energy and crude protein could be corrected using the fat/soya tables.