Study on performance and some economic parameters during different marketing age of broilers

الملخص EN

This study was conducted at poultry farm in Bakrajo- Animal production department, Faculty of Agriculture Sciences, Sulaimani University during October and November 2013 (from 06/10/2013 to 02/12/2013).

A total one hundred (120) one-day hybrids broiler chicks (Ross 308) (50 Male and 50 Female) were used in this experiment.

The chicks were equally distributed into 10 experimental groups through 10 separated cages of 1.5×2M each which provides 0.3 m2 per bird.

Each cage contains 10 birds.

At the starting of the marketing age (42 days), all birds were fed ad libitum on standard diet based on corn- soybean meal and contain 19.5% CP and 3150 Kcal ME/Kg.

chicks were subjected to fed ad libitum with free access to fresh water throughout experimental period.

The experimental period extended for 8 weeks (56 days) to measure carcass traits including dressed carcass, different pieces scheme and weights of internal organs.

The production characteristics were measured at (49days) and (56 days), also (10) birds were slaughter at these two ages.

The effect of marketing on characteristics related to productive performance for slaughter weight and different cutting parts was measured from the results of this work it can be concluded that the effect of ages and gender as well as interaction between them had significant effect on the live body weight (g), average of feed consumption, average of weight gain and also dressing percentage of broiler, but the age and gender and interaction among them didn't affect significantly on mortality percentage during the different marketing ages (49 and 56 days).