Table 1 Growth performance and Carcass traits

Body weight (BW)/g

4093.4 ± 647.11^a

3706.2 ± 602.04^b

ADFI/g

219.22±

221.24

ADG/g

39.76^a

29.87^b

FCR

5.62 ± 0.37^a

7.418 ± 0.42^b

Slaughtered yield

75.0 ± 0.29^a

70.0 ± 0.23^b

Semi-eviscerated slaughtered yield

79.7 ± 0.62^a

76.1 ± 0.53^b

Eviscerated slaughtered yield

71.4 ± 0.44^a

68.7 ± 0.39^b

Breast index

7.95 ± 0.60

7.764 ± 0.33

Abdominal fat

4.452 ± 0.49^a

2.04 ± 0.22^b

Spleen

0.08 ± 0.01

0.09 ± 0.01

Bursa

0.040 ± 0.002

0.041 ± 0.002

Gizzard

3.934 ± 0.22^a

3.522 ± 0.10^b

Thymus

0.19 ± 0.02

0.18 ± 0.02

Kidney

0.624 ± 0.06^a

0.444 ± 0.09^b

Caecum

0.152 ± 0.04^a

0.13 ± 0.03^b