A Comparative Study on Growth Parameters of Three Broiler Chicken Strains from Jordan

The development of the poultry industry in last years demanded evaluation different broiler chicken strains order to improve production efficiency and welfare, considering physiological livability parameters. Thus, present study aimed compare growth performance three (Lohmann, Hubbard Ross). All birds were fed a similar standard commercial diet ad libitum, separately allocated treatment groups. Live body weight (LBW) gain (BWG) weekly recorded. Feed intake (FI), feed conversion ratio (FCR), (%) calculated at end experiment. mean LBW increased significantly all (p<0.05). final (kg/bird) was (p<0.05) higher (1.81±0.20) Ross (1.80±0.18) than Lohmann (1.69±0.06). Mean total BWG also (1.67±0.20), (1.64±0.18) (1.54±0.06). Broiler strain had no significant effect on FI FCR. FCR values 2.20±0.40, 2.21±0.53 2.44±0.65 g feed/g Hubbard, Lohmann, Ross, respectively. did not show any differences among groups, with 95.13% (Ross), 95.64% (Lohmann), 92.94% (Hubbard). In conclusion, findings indicated that chickens are considerably affected by their strains, achieved greater LBW, best as compared strains.