Table 5
Correlation coefficients of starch content from test ingredients (wheat bran, cassava resi- due, ground corn and broken rice) versus enzyme specific activity for jundiá catfish and Nile tilapia.
Plant source
Fish species Test ingredients
variablea
Enzyme specific
activityb
R P-value
Fig. 2. Amylase and maltase specific activities (mean ± s.d., n = 10) in the gut of jundiá catfish and Nile tilapia juveniles fed different plant sources. a,b,c,dDifferent letters indicate different means by Tukey test (P b 0.05). Vertical bars indicate standard deviation. Plant source: P = 0.5716 for amylase and P = 0.0451 for maltase; Fish species: P b 0.0001 for amylase and P b 0.0001 for maltase; Plant source × Fish species: P = 0.9202 for amylase and P = 0.0076 for maltase.
Jundiá catfish Starch Amylase − 0.05 0.8094
Maltase − 0.45 0.0061
Nile tilapia Starch Amylase − 0.27 0.1005
Maltase 0.26 0.1303
a Starch is given in g kg−1 diet.
b Amylase and maltase are given in U mg−1 protein.