Carcass characteristics, immune response and organ weight influenced by different house zones in sexed broilers

The aim of study was to examine carcass characteristics and organ weight in sexed broilers maintained over three different house zones (Pad, Central and Fan) having 4 feeding regimes from 0-10, 11-20, 21-34 and 35-42 days with CP levels of 21, 20, 18 and 17%, respectively. At the termination of the trial, all the treatment groups received the same weighed average of 19 % crude protein and 2800 Kcal/kg energy. At 6th week of age, 6 birds / treatment group were slaughtered and internal organ weights and carcass characteristics were examined. Statistical analysis of data through CRD under factorial arrangement and comparison of mean using DMR test with the help of SAS 9.1 revealed significant effect (P<0.05) of different house zones on organs weight and slaughter characteristics . The anti-body titer of ELISA for IBD and HI for ND were significantly affected by three house zones. The overall results suggested that the broilers reared near pad zone had better dressing percentage and carcass yield.