نظام التقنين الغذائي الزمني و النمو التعويضي لسلالتين من فروج اللحم

Abstract EN

This experiment was conducted at poultry farm in Grda-Rash , college of Agriculture university of Salahaddin .

A216 unsexed one-day-old broiler chicks were used in this study .

Birds were divided in two strain (108) of them was Hubbard and the other (108) was Cobb500 .

Each strain divided in to three treatment (T1,T2,T3) and the chicks in each treatment were subdivided in three replicate .

Chicks were in T1 were used as control and provided feed ad libitum .

Feed restricted broiler T2 , provided feed (9 hour per day ) and T3 , provided feed (12 hour per day ) from the age ( 7 – 14 ) days .

Results showed the means body weight and growth rate in Cobb500 chicks were increased (p> 0.05 ) due to the compensatory growth in the last four weeks of age whereas abdominal fat yield and mortality were decreased significantly (p> 0.05 ) in feed-restricted birds .

There were no significant differences in feed conversion ratio , dressing percentage , breast cut at (42) days of age .