C2-Lancastef Farming, Saturday, July 23, 1994 P' lull 'o Penn State Poultry T Pointers UPDATE OF THE NUTRIENT REQUIREMENTS OF POULTRY Dr. William B. Roush Associate Professor Poultry Science The “1994 Nutrient Require ments of Poultry” manual is avail able from the Nutrition Research Council. The new edition of the poultry manual represents a major effort to update the 1984 edition of this classic reference source. A reassessment of the nutritional data in the previous edition was made. Substantially more informa tion has been added (the size of the manual was increased from 71 to BARTVILLE WELDING SHOP IMi \nl>k kd ( hi ist i.i i i,i l’\ I / ->()'> (,n H.iiuilln ,/,r 155 pages). Chapter titles include 1) compo nents of poultry diets; 2) nutrient requirements of chickens; 3) nutri ent requirements of turkeys; 4) nutrient requirements of geese; 5) nutrient requirements of ducks; 6) nutrient requirements of ring necked pheasants, Japanese quail, and Bobwhite quail; 7) signs of nutritional deficiencies in chickens and turkeys; 8) toxicity of certain inorganic elements; 9) composi tion of feedstuffs used in poultry diets: and 10) standard reference diets for chicks. The appendices include documentation of the nutrient requirements, estimating the energy value of feed ingre dients, and conversion factors. In most instances, the nutrient requirements were derived from empirical observations of poultry to changes in dietary concentra tions or intakes of specific nutri ents. The committee emphasizes that the requirements reported have not been increased by a “mar gin of safety.” The values repre sent the judgment of the subcom mittee on poultry nutrition after reviewing published data. The criteria used in establishing nutri ent requirements included growth, reproduction, and feed efficiency and, where possible, poultry health and quality of poultry products. Dr. Jerry Sell, chair of the sub committee on poultry nutrition, indicated that the scientific know ledge about many of the nutrient requirements was incomplete. As a result, calculations and interpola tions were made to estimate some of the requirements. These estima tions are designated by bold type in the tables. Where estimations were determined to be inappropriate, a question mark was included. As compared to previous edi tions, this report contains addition al information on feedstuffs. including the procedures used to determine metabolizable energy values and a method to estimate amino acid contents of feed ingre dients. A detailed discussion is made of dietary fat sources. The nutrient composition of feedstuffs includes true metabolizable energy values, coefficients of true amino acid digestibility, and equations to estimate amino acid values based on proximate analysis data. TTie 1994 revised edition of the poultry manual should be a wel come addition to the nutrition Threshermen Show Aug. 5-7 DENTON, Md. The Eastern Shore Threshcrmen and Collec tors Assoc., Inc. will be holding its 34th annual Wheat Threshing, Steam and Gas Engine Show on August S-7 at their show-grounds located on Rl 313 between Den ton and Federalsburg. The show features free admission and free parking. Besides the main attraction of wheat threshing, there will be shingle sawing, sawing with a miniature sawmill and rock crush ing. There will be steam engines, antique tractors, gasoline engines, antique cars and steam models in operation. A daily parade of all equipment will be held at S p.m. on Friday and Saturday and at 4 p.m. on Sunday. library of anyone who is interested in the nutrient requirements of poultry. The new manual is avail able for $24.95 from the National Academy Press, 2101 Constitution Ave., N.W., Lockbox 285, Washington. DC 20055, (800) 624-6242. Smokey Joe, a miniature steam train which is a replica of the Civil War locomotive ‘The General,” will provide rides to kids of all ages. There will also be a large flea market with more than 125 dealers and plenty of good food, including fried chicken dinners, crab cakes, hamburgers, and hot dogs. Free country music shows will be held Friday evening with the ‘The Bay Country Gentlemen” bluegrass msuic and “J.R.’s Mid night Express” on Saturday eve ning. Both shows will start at 7:30 p.m. On Sunday evening at 5:30 p.m. “Hearts Afire” will be pro viding Gospel music. Exhibitors of antique equip ment are welcome. There is no charge to exhibit.
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