title: Metabolizable energy (M.E.) values of three protein supplements as determined with chicks and laying hens.
abstract: The M.E. values of three protein supplements that are produced and/or processed in Lebanon and Jordan were determined employing the method of Hill and Anderson (1958). Two experiments were conducted using broiler-type chicks in one experiment and White Leghorn laying hens in the other experiment. Nitrogen-corrected M.E. values expressed in kcal./kg. dry matter were found to be 2513, 2690 and 3215 for the soybean, sesame and poultry by-product meals, respectivel, as determined with chicks, and 2522, 2747 and 3155 as determined with laying hens. Hence, it was concluded that chicks were as efficient as laying hens in energy utilization of these protein supplements. For all practical purposes, it was recommended that metabolizable energy values, of commonly used protein supplements, determined with either chicks or laying hens could be used in poultry ration formulation.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D004044:Dietary Proteins / Q000378:metabolism*; D004734:Energy Metabolism; D005260:Female; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D010058:Oviposition
chemical_list: D004044:Dietary Proteins; D009584:Nitrogen