Table 7.

Regression analysis based on different parameters of Nile tilapia fed FPBM diets for 60 days^*.

Indexes	Regression equation	R2	P value	Optimal dose (%)
FBW (g)	y = −0.0108x2 + 0.4121x + 41.113	0.9699	0.003	19.08
WG (%)	y = −0.1047x2 + 3.9733x + 287.63	0.9795	0.003	18.79
SGR (% IBW/day)	y = −0.0004x2 + 0.0164x + 2.2576	0.9829	0.002	20.5
FI (g/fish/60 day)	y = −0.0042x2 + 0.1244x + 41.301	0.9647	0.005	14.81
FCR (g FI/g WG)	y = 0.0003x2 – 0.0127x + 1.3555	0.9049	0.04	21.17
Amylase (unit/mg)	y = −0.0108x2 + 0.377x + 31.913	0.8208	0.001	17.45
Lipase (unit/mg)	y = −0.0318x2 + 1.1851x + 23.374	0.8936	0.04	18.63
Protease (unit/mg)	y = −0.0069x2 + 0.3469x + 29.239	0.9711	0.001	25.14
Lysozyme activity (unit/ml)	y = −0.0067x2 + 0.15x + 31.087	0.893	0.03	11.19
Phagocytic activity (%)	y = −0.0229x2 + 0.5396x + 53.515	0.9086	0.005	11.76
Phagocytic index	y = −0.0011x2 + 0.0396x + 2.1834	0.8365	0.032	17.9
IgM (mg/ml)	y = −0.0018x2 + 0.049x + 4.1333	0.8607	0.021	13.61
NBT (OD at 630 nm)	y = −5E−05x2 + 0.0014x + 0.2355	0.7548	0.042	14
Bactericidal activity (%)	y = −0.0206x2 + 0.5275x + 42.285	0.9521	0.035	12.8
GPx (IU/L)	y = −0.0046x2 + 0.2094x + 26.038	0.8513	0.021	22.76

^*The parameters showed significant differences (P < 0.05) are selected to be represented in the table.