الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 230 |  |  |
| | | from | 230 | | |
Abstract
Five trials were conducted at the Poultry Station, Agriculture Research and Experimental Center, Faculty of Agriculture, Mansoura University during the period from June to September 2001. The experimental protein sources i.e. soybean meal, sesame meal, rapeseed meal, and poultry by-product meal was analyzed for their nutrient content e. g. crude protein, ether extract, crude fiber, and ash according to AOAC, (1990). Whereas, the amino acids and metaboilzable energy (ME) values were estimated according to the equations of the NRC, (1994). The protein quality of sesame meal (SSM), rapeseed mea (RSM), as plant protein sources and poultry by-product meal (PBPM) as an animal protein supplement in local hybrid chickens diets was assayed using total protein efficiency. These protein sources were fedas a main protein supplement in Trial (I), to assay the total protein efficiency according to the methods of Woodham et al. (1972) and Patrick and Schaible (1981). In this trial, four experimental diets were formulated to contain 12% crude protein and 2900 kcal ME / kg diet. Each experimental diet was fed to four replicate groups, each containing ten chicks of local hybrid chicks used for roaster production. The efficiency of such protein sources i.e. SSM, RSM, and PBPM when used solely in isocaloric, isonitrogenous-diets or combined and fed in isocaloric diets containing different protein levels to replace 40% or 60% of soybean meal protein in the growing and finishing diets respectively was studied in feeding trails.