Feeding different feed forms to broilers during the finishing period: Effect on performance carcass traits and non-carcass components

Abstract

400 male broiler chickens of Hybro-type were used in this experiment. 
They were randomly distributed in 20 pens which were randomly allocated 
to 4 experimental rations that include: complete mash method with ground 
dura (Sorghum vulgare); -complete mash with unground dura; free choice 
with ground dura; and free choice with unground dura grains. At the end of 
the experiment which lasted for nine weeks, the birds were slaughtered 
and the different parameters were studied. 
No significant difference on total feed intake, feed efficiences and dressing 
percentage between treatments were found. However birds fed on free choice 
method with unground dura grains produced significantly (p < 0.05) higher 
body weight gain and eviscerated carcass weight as compared to others. 
Birds fed on both free choice and complete mash methods with unground dura 
grains produced significantly (p < 0.05) higher gizzard and crop percentage 
compared to others. No significant difference was found between the 
treatments with regard to the percentages of commercial cuts.