Table 7  Histomorphometric of muscle fibers of Nile tilapia (Oreochromis niloticus) reared for 8 weeks and fed on normal and high fat diets supplemented with low and high dose of clenbuterol at both level of dietary fat.

567 ± 25.38^b

767.78 ± 11.85^a

803.56 ± 9.04^a

537.89 ± 28.12^b

548.44 ± 38.58^b

577.67 ± 37.07^b

< 0.0001

0.0001

0.0021

16,742.24 ± 794.06^b

22,344.73 ± 443.08^a

23,400.22 ± 299.87^a

15,748.05 ± 1221.6^b

16,715.73 ± 1580.90^b

16,448.15 ± 930.45^b

0.0019

< 0.0001

0.0161

29.50 ± 0.32

29.09 ± 0.25

29.12 ± 0.21

29.1 ± 0.82

30.30 ± 1.17

28.55 ± 0.52

0.4623

0.9000

0.3702

25.79 ± 0.54^b

30.37 ± 0.29^a

31.12 ± 0.27^a

24.92 ± 0.76^b

25.73 ± 1.06^b

25.15 ± 0.31^b

< 0.0001

0.0002

0.0012