Research Article

Effects of Dietary Fishmeal Replacement with Soybean Meal on Growth Performance, Digestion, Hepatic Metabolism, Antioxidant Capacity, and Innate Immunity of Juvenile Large Yellow Croaker (Larimichthys crocea)

Table 5

Effects of FM replacement with SM on activities of digestive enzyme of juvenile large yellow croaker.

ParametersExperimental dietsPolynomial contrasts
FMSM15SM30SM45LinearQuadratic

Trypsin (U/mg·prot)262.02 ± 24.9179.34 ± 29.65144.41 ± 12.22123.92 ± 3.020.0040.219
α-Amylase (U/mg·prot)0.17 ± 0.010.19 ± 0.01a0.18 ± 0.01a0.15 ± 0.010.0020.001
Lipase (U/mg·prot)20.36 ± 0.6719.12 ± 0.6021.87 ± 0.8623.39 ± 0.760.0020.090

Linear = P value of linear trend analyzed by orthogonal polynomial contrasts; Quadratic = P value of quadratic trend analyzed by orthogonal polynomial contrasts (means ± S.E.M, n = 3).