الفهرس 
Importance of poultryOnly 14 pages are availabe for public view
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Abstract
Field experiments were conducted at Aga, El-Mansoura, Dakahlia Governorate,during from June, 2017 to October, 2018. The farm capacity were 4000 hens spend 40 weeks to egg production about of 4 million eggs per year. The periods of the experiments were 65 weeks to end egg production. In order to measure the effect of methods of feeding system on egg weight, losses of feed power motor consumption and wearing on feeder system. The main objectives of this study was to test the chain feeder system before and after modifying under three levels of chain feeder speeds were 25, 30 and 35m/min and three different of opening gate feed area were 18, 27 and 36 cm².This modification using bearing with corner wheel lead to minimize energy and wearing between corner wheel feeder chine to increase the efficiency of chain feeder with subtle amount of forage components on trough chicken nurture. The results showed that, increased the feeding rate of feeder from 31 to 81kg/min when opening feed area increased from 18 to 36 cm 2 at 25 m/ min chain speed, at the same conditions, the total amount of feed increased the feeding rate of feeder from 620 to 1620 g/m. Also, the feeder efficiency increased from 36.90 to 96.40% when the opening feed area increased from 18 to 36 cm 2 at 25 m/min chain speed. The feeding system performance was evaluated under load and without load, the power requirement with ordinary fillers before modified decreased from 1.089 to 0.941 kW with load and without load at 25 m/min chain speed also decreased from 1.026 to 0.846 kW with load and without load in modified system.The feeder chain losses increased from 280 to 900 g when opening feed area increased from 18 to 36 cm 2. Also, mentoring the wearing behavior for coroner wheel and compared between modified bearing before and after using through year the wearing rate decreased from 0.90 to 0.35g/h before and after modified