Parameter                                              Treatment                                                    Exposure

Weight gain (g)                                          D1                                                        8.50 ± 5.25a
                                                                 D2                                                        16.2 ± 5.25b
                                                                 D3                                                       -1.67 ± 4.37c
               
Feed Conversion Ratio                              D1                                                         0.46 ± 0.18a
                                                                 D2                                                         0.18 ± 0.03a
                                                                 D3                                                         0.51 ± 0.25a
               
Specific Growth Rate                                D1                                                         0.07 ± 0.05a
(% day –1)                                               D2                                                           0.14 ± 0.02a
                                                                 D3                                                         -0.09 ± 0.10a
Condition factor (%)                                  D1                                                        1.45 ± 0.02a
                                                                 D2                                                         1.60 ± 0.07b
                                                                 D3                                                         1.41 ± 0.05a
               
Hepatosomatic Index (%)                         D1                                                         0.99 ± 0.07a
                                                                 D2                                                         1.47 ± 0.04b
                                                                 D3                                                        1.74 ± 0.12b
Mean Ration Size                                      D1                                                         0.84 ± 0.04a
(% body weight)                                       D2                                                         1.08 ± 0.04b
                                                                 D3                                                        1.06 ± 0.07b

Data are means ± S.E (n 3 per value), except for ration size where n= number of daily ration size Letters with the same subscript in the same column are not significant (p>0.05)
Table 5: Growth and Nutritional Performance of common carp fed control (diet 1), 1000mgCuKg (diet 2) and 2000mgCuKg–1 (diet 3) for 42 day (Exposure phase).