Table 6 Digestive enzyme activity in intestine of Pangasianodon hypophthalmus fed with varying lipid levels over 56 days

AMYLASE (μg maltose

released/min/mg protein)

10.42 ± 0.25^a

10.45 ± 0.56^ab

10.55 ± 0.14^ab

12.39 ± 0.36^b

12.42 ± 0.57^b

P < 0.05

PROTEASE (µmole of

tyrosine released/min/mg

protein)

7.35 ± 0.15^a

7.62 ± 0.24^a

7.44 ± 0.08^a

7.38 ± 0.52^a

7.21 ± 0.61^a

P > 0.05

LIPASE (Unit/mg protein)

1.89 ± 0.07^a

2.32 ± 0.01^b

2.42 ± 0.02^b

3.89 ± 0.02^c

4.24 ± 0.03^d

P < 0.05