Abstract:
THE THIRD EDITION OF THE NUTRIENT COMPOSITION TABLES The prime purpose of the tables is to provide the Pig, Poultry and Stockfeed Industries with a set of working values for the formulation of pig and poultry diets. A third edition of the nutrient composition tables is shortly to be published by the Queenland Department of Primary Industries. This edition is a complete revision and considered to be a substantial improvment on the earlier editias. The improvmts are as follows :1. The tables have been prepared from a much larger data base, and the proportim of Australian data included have been substantially increased. Overseas data have only been used where there is little or no Australian informtion available. 2. The amposition tables for pig and poultry have been mined and the tables now include values applicable to both pigs and poultry. 3. The n&r of feedstuffs has been increased from 102 to 144. 4. Where possible, the standard error, nuGber of samples and the -efficient of variation have been included so that the user may know the variability of the information presented. The nutrient composition values given in the tables for a particular feedstuff have been derived by grouping individual samples whi& are considered to be nutritionally similar. For example, the cereal grains have been grouped according to their protein content. Other feedstuffs such as the vegetable protein meals have been grouped according to their oil extraction process whilst values for others, su& as the meat meals, have been derived by regression techniques using their whole data base. In the case oft' meat ~~1s the reason for using regression techniques was for the purpose of smothing out some of the great variability that exists between individual meat meal saqles. Regression techniques were also used to confirm the protein groupings used for the grains, that is, amino acid values derived by using both the individual sample protein groping and the regression tebnique using the whole data base for a particular *ain proved to be very consistent. Further details of the criteria by which the values were derived are included with the tables. Areas in the tables where information is scanty or lacking in&de tryptophan, linoleic acid, trace elements and vitamin values for all feedstuffs. In many instances where there is limited information available it is difficult to determine the reliability of the data. In these . circumstances this information should tiy act as a guide. There is also limited Australian data on the metabolisable and digestible energy values for some protein sources, grain by-products and lucerne. The tables are most useful when some fore knowledge of the feedstuff allows the selection of the mst representative feedstuff analysis. For example, the tyPe of information that would be useful to know about a grain is its protein content, whilst for soybean meal, the ruethd of processing is amlicable. ---_I- * Department of Primary Industries, Animal ResearchInstitute, Yeerongpilly, Qld 4105.