IMPACT OF SEX AND BIRD’S LOCATION INSIDE A LOCAL POULTRY HOUSE ON SOME PRODUCTIVE TRAITS THROUGH DIAGNOSTIC ENVIRONMENTAL MONITORING SYSTEM OF ROSE BROILER 308

This Study was conducted in a closed Poultry house, Poultry Research Station, Office of Agricultural Research, Ministry of Agriculture, Baghdad, Iraq, for the period from 2/9 to 14/03/2016 for total rearing period of 35 days. To diagnose and monitoring of environmental factors such as temperature, humidity , density , and levels of carbon dioxide inside the house during the winter season and its impact on the productive performance of broiler chickens Rose 308 breed . The dimensions of the house were (lengt h 35 m x width 7.5 m x Height 2.5 m) by total space volume 3656.25 m 3 . The ventilation system in the house was (traditional mode 1 of negative pressure type). The house is totally closed, small fans for minimum ventilation in winter is functioned, and large fans for ventilation in the evaporative cooling operation is used in summer. Sometimes in the summer the need for greater ventilation rates increases so both types of fans are used. 1000 sexed birds were used in this experiment of Ross broiler 3 08 strain, imported through commercial hatchery in Abu Ghraib. The house was divided into three thermal Zones in order to find out whether heterogeneity is existed in environmental conditions of the house especially at birds level , as a result the imp act of homogeneity in the weights of marketed birds. The treatments have been distributed into 32 rearing cages, 1 6 of them are male and other 1 6 are female. Two designs were used in this experiment the first is the complete randomized design (CRD) to fin d out which Zone is better in terms of feed intake, feed conversion efficiency and body weight gaining under the prevailing inside environmental conditions. The second design is complete randomized block design (CRBD) to determine which side (Block) of tha t particular Zone is better least significant differences (L.S.D) at 0.05 levels were used to compare the mean of treatments.