الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 156 |  |  |
| | | from | 156 | | |
Abstract
This study was carried out at the farm of Animal Production Department, Faculty of Agriculture, EI-Minia summer, autumn and winter). In each season 500 birds were reared from hatch until eight weeks 01· age. The ducklings were the ducklings were divided to three equal groups, each received one of these levels: 5, 7.5, 10 % crude fiber using sawdust to adjust the figures. In this perio~.from 2 to 8 weeks of age, some productiv.e and physiological characterist- .Productive characteristics:
1.1.1. : Live body weight, feedConsumption and feed converssion were increased gradually with age, the effect of age was highly significant on body weight and feed conversion. Daily gain also increased by age until six weeks old and decreased after that ( the best age.