Effect of aromatase inhibitors on the productive performance of broiler (Ross 308) chicks

This study was conducted at the poultry farm of the Animal Production Department, College of Agriculture, Al-Qasim Green University, from March 8, 2022, to April 12, 2022, for 35 days. The study aim was to find out the effect of aromatase inhibitors on productive traits from hatching until 35 days of age. A total of 180 chicks were selected from a total of 300 sterile eggs. The chicks were distributed into five treatments with three replicates and 12 chicks per replicate. These treatments were the control (T1) without any additions or treatments; hatching eggs were sprayed with 1mg/100 ml of aromatase inhibitor solution in the second treatment (T2); hatching eggs were dipped in 1mg/100 ml of aromatase inhibitor solution in the third treatment (T3); hatching eggs were sprayed with 2mg/100 ml of aromatase inhibitor solution in the fourth treatment (T4); hatching eggs were dipped in 2mg/100 ml of aromatase inhibitor solution in treatment five (T5). The results showed that (LBW) and weight gain (WG) in T2 was significantly (p<0.05) higher than T5 in the first week while in week 4, T2 and T4 were significantly higher than T3 in the live body weight, whereas weight gain as higher in T1 compared to T3; otherwise no differences were found between other treatments. For feed intake, T1 showed significant increase compared to T3 and T5 in the fourth week while the overall rate showed significant increase in T1 and T2 compared to T3 whereas no differences were found with others. Finally, no significant effect was observed between treatments regarding feed conversion ratios.